Why Siemens Relays do not respond to faults?
If a Siemens Relay doesn't respond to faults, it could be due to several reasons. First, check the relay settings to ensure they are properly configured. Second, verify the test source settings. Third, inspect the CT or PT input wiring for any errors. Finally, check the relay's self-test results using the front-panel Status of Relay function.
What to do if Siemens Relays do not accurately measure voltages or currents?
If Siemens Relays are not accurately measuring voltages or currents, start by verifying the input wiring. Then, verify the signal source ratios, connections, and associated settings for CTR, ITAP, CTRN, INTAP, or PRT. Also, check that the voltage neutral terminal (D09) is properly grounded.
How to fix a dark LED on Siemens Relays front panel?
If the Relay Enabled Front-Panel LED is dark, it could be due to a couple of reasons. First, verify that input power is present and that the fuse has continuity. Second, check to see if the ALARM b-contact is closed, indicating a self-test failure. Use the front-panel Status of Relay function to view self-test results.
What to do if Siemens Relays do not respond to commands from device connected to serial port?
If Siemens Relays do not respond to commands from a device connected to the serial port: * Verify the cable connections. * Verify the terminal setup and cable pinout for correct baud rate or other communication parameter compatibility. * Type Q to send relay on XON and restart communications, in case the relay serial port has received an XOFF, halting communications.
Why can't I see characters on my Siemens Relays front panel display screen?
If you cannot see characters on the Relay Front-Panel Display Screen, it could be because the front-panel has timed-out, so press the {ESC} pushbutton to activate the display. Another reason could be that the relay is deenergized, in which case you should verify input power and fuse continuity.
Provides an overview of the SIMPRO-100 Relay, its features, and the manual's structure.
Explains the conventions used for commands, keys, and menu selections in the manual.
Lists the available SIMPRO-100 Relay models and provides information on creating order numbers.
Lists the minimum PC resources needed for installing and using the SIMPRO-PC software.
Outlines the structure of the settings calculation section, covering motor protection and logic settings.
Describes the physical layout of the SIMPRO-100 Relay's front panel, including display, buttons, and LEDs.
Details automatic messages displayed on the front panel for various conditions like motor overload or trips.
Lists the necessary equipment for establishing serial port communication with the SIMPRO-100 Relay.
Guides on configuring terminal emulation software for successful PC-to-relay serial communication.
Explains how to use terminal commands, including abbreviations, control characters, and command examples.
Describes Access Level 1 and 2, password entry, and security features for serial port access.
Provides a step-by-step guideline for entering settings and verifying relay connections and operation.
Lists all necessary equipment for performing the relay commissioning procedure, including test sources and software.
Details applying power, verifying connections, setting clock/passwords, and entering relay settings.
Continues commissioning steps, focusing on verifying AC connections and performing protection element tests.
Provides connection diagrams for test sources based on different relay configurations for accurate testing.
Details steps to test phase current measuring accuracy by connecting current sources and verifying measurements.
Describes the procedure to test neutral current measuring accuracy by connecting a current source to the IN input.
Guides on testing current unbalance element accuracy by verifying measurement based on expected readings.
Explains how to test motor thermal element accuracy using current sources and specific commands.
Details testing analog output accuracy by connecting a milliammeter and using the ANALOG command.
Guides on verifying RTD input accuracy by connecting variable resistances and using meter functions or commands.
Outlines tests for power and power factor measuring accuracy using current and voltage sources with specific phase angles.
Introduces relay metering functions for displaying various measured values via front-panel, serial port, or analog output.
Categorizes meter data into instantaneous, demand, max/min, thermal, and energy metering types.
Describes instantaneous metering, detailing fundamental magnitudes, phase angles, and RMS values for various quantities.
Explains demand metering, including calculation of new demand quantities and recording peak values.
Details max/min metering, describing how the relay records extreme values of measurements under specific conditions.
Reports present RTD temperatures and quantities related to motor thermal protection, including % Thermal Capacity.
Explains energy metering, noting that real, reactive, and apparent energy are recorded when voltage inputs are connected.
Describes the IEEE convention for power measurement and its implications for SIMPRO-100 Relay.
Explains the built-in load profiling function that automatically records selected quantities every 15 minutes.
Details how the relay retains motor information accessible via commands, covering times, totals, and averages.
Explains the recording of motor running/stopped time, percent running time, and total energy consumed.
Describes the recording of average and peak values for key measurements like starting time, current, and thermal capacity.
Explains how the relay learns motor cooling time and starting thermal capacity from collected data.
Details how the relay records the number and type of element alarms and trips for motor protection.
Lists information within the motor start report summary, including start date, acceleration time, and thermal capacity.
Explains the capture and output format of motor start data, recorded every 5 cycles.
Describes the comma-delimited format of the motor start report for spreadsheet integration.
Explains the motor start trending function, tracking summary data for eighteen 30-day periods.
Introduces the tools available for analyzing relay operations to diagnose faults and restore motor service.
Explains the target LEDs on the front panel, indicating relay status, motor condition, and active protection elements.
Details how to reset tripping targets using the front-panel menu or serial port command.
Describes the behavior of the Motor Energized LED indicating motor stopped, starting, or running states.
Explains that trip messages are displayed automatically on the front panel to indicate the cause of a trip.
Lists automatic messages displayed under specific conditions like motor overload or self-test failures.
Explains that the relay captures detailed information for event reports and stores recent reports and summaries.
Details how the SIMPRO-100 Relay captures and stores detailed information for event reports, including measurements and status.
Lists conditions that trigger an event report, including relay trips, user commands, and programmable events.
Explains how to use the serial port EVENT command to retrieve event reports with various formatting options.
Defines columns in event reports, including current, voltage, output, input, and element status.
Summarizes event report current and voltage columns, defining measurements like IA, IB, IC, and voltage inputs.
Summarizes event report columns for output contacts, inputs, and relay element control states.
Explains how to view raw inputs using the unfiltered event report command for analyzing harmonics and DC offset.
Describes using the HISTORY R command to clear event summaries and reports from memory.
Explains how the relay stores SER entries for state changes of elements listed in SER trigger settings.
Details renaming SER trigger conditions using ALIAS settings for easier report review.
Guides on defining aliases for Relay Word bits, including asserted and deasserted text strings, up to 15 characters each.
Recommends monitoring the ALARM contact and reviewing event reports for effective relay maintenance.
Advises using Status of Relay function or command to verify relay self-tests for out-of-tolerance conditions.
Suggests comparing relay meter readings to a separate meter for verifying current and voltage measurements.
Details checking contact input status by short-circuiting inputs and observing the front-panel display.
Explains verifying contact output performance using the Pulse Out Contact command for TRIP and other outputs.
Explains the relay's self-tests and the ALARM contact's role in indicating failures or de-energization.
Describes the relay's actions when protection functions are disabled due to self-test failures.
Provides causes and solutions for the Relay Enabled LED being dark, related to input power or self-test failures.
Offers troubleshooting steps for display issues, including timeout activation and verifying input power continuity.
Lists potential causes and solutions for inaccurate voltage/current measurements, including wiring and setting errors.
Provides troubleshooting for serial port communication issues, covering cable, baud rate, and protocol configuration.
Suggests checking relay settings, test source settings, input wiring, and self-test results for fault response issues.
Explains how to replace the relay's internal fuse, detailing specifications and part numbers.
Guides on replacing the real-time clock lithium battery, including removal and installation steps.
Lists essential equipment for firmware upgrades, including PC, software, serial cable, and firmware file.
Provides step-by-step instructions for upgrading firmware using terminal emulation or SIMPRO-PC software.
Continues firmware upgrade steps, covering saving settings, communication parameters, and file transfer initiation.
Introduces programmable logic for customizing relay functions using control equations and Relay Word bits.
Explains the relay's internal processes and programmable logic capabilities, illustrated by a process diagram.
Details how the relay acquires and filters AC signals, sampling at 16 times per power system cycle.
Explains how the relay processes acquired signals to determine protection element status (picked up or dropped out).
Defines Relay Word bits as internal representations of element results, existing in true/false states.
Explains Relay Word bits as representations of element results, collected into a table (Relay Word) used by commands like TAR.
Describes how control equations combine relay elements and logic operators to create custom protection and control schemes.
Lists and explains logic operators (AND, OR, NOT) and edge detection operators (Rising, Falling) for control equations.
Explains the use of the asterisk [*] symbol for logical AND operations between Relay Word bits.
Explains the use of the plus [+] symbol for logical OR operations, where either bit can trigger the action.
Describes the falling-edge operator [\ ] for single-cycle assertions when a Relay Word bit changes from logical 1 to 0.
Explains the rising-edge operator [/ ] for single-cycle assertions when a Relay Word bit changes from logical 0 to 1.
Details using parentheses to logically combine elements in control equations, with limitations on nesting.
Outlines limitations for single control equation settings and the sum of all settings, reporting capability usage.
Explains how FACTLOG setting controls the display and modification of factory default logic and other settings.
Describes four text display messages, each with complementary screens controlled by DMn settings for displaying conditions.
Introduces four nondedicated variables (SV1-SV4) used in control equations, with associated timers.
Explains the latch control switch feature, replacing traditional relays by pulsing set/reset inputs for output contacts.
Advises caution when setting latch controls due to nonvolatile memory write limits and potential EEPROM failure.
Describes the logic for tripping or stopping motors, defining conditions for trip initiation and unlatching.
Outlines three methods to stop the motor: TRIP control equation, STOP command, or remote bit function.
Explains the conditions required to maintain a trip signal until a fault condition is cleared and lockout conditions are satisfied.
Defines the 52A setting for breaker auxiliary contact input, allowing custom control functions like breaker failure logic.
Illustrates the logic for initiating motor starts, including the START Relay Word bit and Emergency Restart.
Shows how factory settings route the start logic result to output contact OUT3 via a control equation.
Describes Modbus RTU communication features supported by the EIA-485 port when Modbus protocol is enabled.
Details Modbus RTU protocol, including master queries, slave responses, function codes, and exception responses.
Explains the fields in a Modbus RTU query: Slave Device Address, Function Code, Data Region, and CRC.
Lists the Modbus function codes supported by the SIMPRO-100 Relay, such as Read Coil Status and Preset Single Register.
Describes exception codes the relay sends for errors like illegal function code, illegal data address, or device errors.
Explains the CRC-16 algorithm used for error detection to validate received data and ensure packet integrity.
Details function code 01h for reading the On/Off status of selected bits (coils), up to 2000 bits per query.
Explains function code 02h for reading the On/Off status of selected bits, up to 2000 bits per query.
Describes using function code 03h to read registers from the Modbus Register Map, up to 125 registers at once.
Details using function code 04h to read registers from the Modbus Map, up to 125 registers at once.
Explains function code 05h for data control, including clearing records, operating output contacts, and breaker elements.
Describes function code 06h to allow a Modbus master to write directly to a database register.
Explains how the SIMPRO-100 Relay allows a Modbus master to read the present status of the relay and protected motor.
Details using function code 08h for diagnostic testing of Modbus communication channels and the relay.
Explains function code 10h for writing multiple registers at once, up to 100 per operation.
Describes how the Modbus Register Map allows control of relay output contacts and Relay Word Remote Bits.
Explains how to set the relay clock and calendar using Modbus Function Code 10h commands.
Details reading present relay self-test results using Modbus Map addresses and interpreting the results.
Explains the Modbus Register Map's feature for defining 125 user settable addresses for custom data regions.
Describes how to download complete event data via Modbus, including summary and analog event data.
Provides a comprehensive table of Modbus register addresses, fields, samples, low/high limits, steps, and types.
Continues the Modbus register map, detailing addresses for commands, real-time clock, user map values, and relay elements.
Continues the Modbus register map, detailing addresses for relay status, instantaneous metering, and thermal metering.
Continues the Modbus register map, detailing addresses for energy metering, demand metering, and peak demand metering.
Continues the Modbus register map, detailing addresses for current max/min metering, RTD max/min metering, and thermal metering.
Continues the Modbus register map, detailing addresses for voltage/power max/min metering and RTD temperature settings.
Introduces communication features supported by serial ports for ASCII communications, including compressed ASCII commands.
Lists binary messages used for relay configuration and status, categorized by Hex and ASCII requests.
Provides definitions for Fast Binary Messages, including A5C0, A5C1, A5D1, A5C2, A5D2, A5C3, A5D3, A5B9, A5CE, A5E0, A5E3.
Details the block sent in response to an A5CE request, including command, length, and operate codes.
Lists the data and description for the A5CE Fast Operate Configuration Block.
Explains how to use the A5E0 command to operate Remote Bits RB1-RB4, including command structure.
Details the A5E3 command for stopping or starting the protected motor, requiring proper output contact connection.
Describes the ID command response, including firmware ID, boot code, relay settings, device code, part number, and configuration.
Explains the DNA command response, which sends names of Relay Word bits from the A5D1 message.
Describes the BNA command response, which sends names of bits transmitted in the A5D1 Status Byte.
Introduces compressed ASCII versions of commands for efficient data extraction into spreadsheet or database programs.
Explains the CASCII command for obtaining configuration messages and the relay's response format.
Details the general format of the compressed ASCII configuration message and its components like headers and data format designators.
Explains how the SIMPRO-100 Relay sends compressed ASCII configuration messages, replacing italics with actual data.
Explains the CSTATUS command to display status data in compressed ASCII format, showing enabled/disabled status and checksum.
Describes the CHISTORY command to display history data in compressed ASCII format, showing data values and checksum.
Explains the CEVENT command to display event reports in compressed ASCII format, showing event number, date, time, and type.
Details the CME E command for displaying energy meter data in compressed ASCII format, showing various energy values.
Explains the CME M command for displaying Max/Min meter data in compressed ASCII format, showing max/min values for various parameters.
Describes the CME T command for displaying thermal meter data in compressed ASCII format, including thermal capacity and RTD values.
Introduces the SIMPRO-100 Relay's motor thermal protection using a patented algorithm with three setting methods.
Explains the purpose of motor thermal protection, relating it to motor starting characteristics and continuous heavy load operation.
Describes the electrical analog of a thermal system, including heat source, capacitance, impedance, and comparator.
Illustrates the thermal element used during motor starting, focusing on locked rotor heating and heat transfer.
Explains the thermal element's operation during motor starting, including heat estimates and trip values.
Describes the motor running thermal element, its path for energy return, and how resistor value is determined.
Details how the motor running thermal element determines resistor value and describes the final running thermal element.
Explains how the relay calculates % Thermal Capacity and its meaning when reaching 100% for tripping.
Discusses comparing % Thermal Capacity across multiple starts and how the report helps identify increasing load torque.
Explains the importance of starting thermal capacity and how the relay ensures safe motor starts using fixed values or learned data.
Presents factory default settings for the SIMPRO-100 Relay, covering general data like identifiers, CT/VT ratios, and phase rotation.
Details general data settings including relay and terminal identifiers, CT/VT ratios, phase rotation, nominal frequency, and date format.
Describes thermal element settings, including setting methods (Rating, Generic, User) and their respective parameters.
Details thermal element settings for the Rating method, including Full Load Amps, Service Factor, Locked Rotor Amps, and time settings.
Explains thermal element settings for the Generic method, including Full Load Amps, Service Factor, and Curve Number selection.
Details thermal element settings for the User method, allowing custom curve construction with time-to-trip points.
Describes Overcurrent elements, including phase, residual, and neutral overcurrent pickups and time delays.
Explains settings for Jogging Block elements, including maximum starts per hour and minimum time between starts.
Details Load-Jam settings, including trip pickup and delay parameters for detecting motor load jamming.
Describes Load-Loss element settings, including alarm and trip thresholds and time delays, with options for voltage input availability.
Explains current unbalance settings, including alarm and trip pickups and time delays for detecting phase current unbalance.
Details the Phase Reversal Tripping setting (E47T) to detect incorrect phase rotation and trip the motor.
Describes the Speed Switch Tripping Time Delay setting (SPDSDLY) for additional locked rotor protection.
Explains RTD input options (INT, EXT, NONE) and temperature preference settings (C or F).
Guides on defining RTD locations (WDG, BRG, AMB, OTH, NONE) for each monitored RTD input.
Lists the available RTD types (PT100, NI100, NI120, CU10) that can be configured for each input.
Details RTD temperature settings for trip and alarm levels, including enabling winding and bearing trip voting.
Introduces voltage-based protection functions, including undervoltage, overvoltage, underpower, power factor, and frequency elements.
Describes Undervoltage elements for phase-to-phase and phase-to-neutral potentials, including pickup and time delay settings.
Details Overvoltage elements for phase-to-phase and phase-to-neutral potentials, including residual overvoltage pickup.
Explains Reactive Power element settings, including alarm and trip pickups and time delays for synchronous motors.
Describes Underpower element settings, including alarm and trip pickups and time delays for detecting low real power consumption.
Details Power Factor element settings, including alarm and trip pickups and time delays for synchronous motors.
Explains Frequency elements settings, providing three levels for over/under-frequency detection with pickup and time delay.
Describes analog output settings, including signal type (0-1mA, 0-20mA, 4-20mA) and output parameter selection.
Details front-panel display settings for power display, RTD display, timeout, and brightness adjustment.
Explains display message settings (DMn) to control up to four logic conditions and eight display messages.
Covers output contact settings, including enable fail-safe options for TRIP, OUT1, OUT2, OUT3, and ALARM contacts.
Details the Antibackspin Setting (ABSDLY) to prevent motor starts during backspin periods after stopping.
Explains factory logic settings (FACTLOG) that generate trip/alarm outputs and control inputs based on default logic.
Covers serial port settings for front and rear panels, including protocol, baud rate, data bits, parity, and stop bits.
Details ASCII protocol settings for serial ports, including baud rate, data bits, parity, stop bits, timeout, and handshaking.
Explains Modbus protocol settings for the rear-panel serial port, including baud rate, parity, and Modbus Slave ID.
Outlines SER settings, including SER trigger settings (SER1-SER4) and ALIAS settings for customizing report display.
Details SER trigger settings, allowing configuration of up to 96 conditions using Relay Word bits.
Explains SER Alias settings for renaming trigger conditions and customizing text displayed for asserted/deasserted states.
Guides on defining aliases for Relay Word bits, including asserted and deasserted text strings, up to 15 characters each.
Defines terms starting with A, B, and C, including abbreviations for amps, alias, ambient temperature, and Modbus.
Defines terms starting with D, E, F, G, H, I, including deassert, EEPROM, event report, and horsepower.
Defines terms starting with J, K, L, M, N, O, P, including key switch, learned parameters, and phase reversal element.
Defines terms starting with Q, R, S, T, U, V, including RAM, relay word, RMS, and voltage measurements.
Defines terms starting with W, X, Y, Z, including Wye connection, terminal emulation software, and underfrequency element.
Provides an overview of the SIMPRO-100 Relay, its features, and the manual's structure.
Explains the conventions used for commands, keys, and menu selections in the manual.
Lists the available SIMPRO-100 Relay models and provides information on creating order numbers.
Lists the minimum PC resources needed for installing and using the SIMPRO-PC software.
Outlines the structure of the settings calculation section, covering motor protection and logic settings.
Describes the physical layout of the SIMPRO-100 Relay's front panel, including display, buttons, and LEDs.
Details automatic messages displayed on the front panel for various conditions like motor overload or trips.
Lists the necessary equipment for establishing serial port communication with the SIMPRO-100 Relay.
Guides on configuring terminal emulation software for successful PC-to-relay serial communication.
Explains how to use terminal commands, including abbreviations, control characters, and command examples.
Describes Access Level 1 and 2, password entry, and security features for serial port access.
Provides a step-by-step guideline for entering settings and verifying relay connections and operation.
Lists all necessary equipment for performing the relay commissioning procedure, including test sources and software.
Details applying power, verifying connections, setting clock/passwords, and entering relay settings.
Continues commissioning steps, focusing on verifying AC connections and performing protection element tests.
Provides connection diagrams for test sources based on different relay configurations for accurate testing.
Details steps to test phase current measuring accuracy by connecting current sources and verifying measurements.
Describes the procedure to test neutral current measuring accuracy by connecting a current source to the IN input.
Guides on testing current unbalance element accuracy by verifying measurement based on expected readings.
Explains how to test motor thermal element accuracy using current sources and specific commands.
Details testing analog output accuracy by connecting a milliammeter and using the ANALOG command.
Guides on verifying RTD input accuracy by connecting variable resistances and using meter functions or commands.
Outlines tests for power and power factor measuring accuracy using current and voltage sources with specific phase angles.
Introduces relay metering functions for displaying various measured values via front-panel, serial port, or analog output.
Categorizes meter data into instantaneous, demand, max/min, thermal, and energy metering types.
Describes instantaneous metering, detailing fundamental magnitudes, phase angles, and RMS values for various quantities.
Explains demand metering, including calculation of new demand quantities and recording peak values.
Details max/min metering, describing how the relay records extreme values of measurements under specific conditions.
Reports present RTD temperatures and quantities related to motor thermal protection, including % Thermal Capacity.
Explains energy metering, noting that real, reactive, and apparent energy are recorded when voltage inputs are connected.
Describes the IEEE convention for power measurement and its implications for SIMPRO-100 Relay.
Explains the built-in load profiling function that automatically records selected quantities every 15 minutes.
Details how the relay retains motor information accessible via commands, covering times, totals, and averages.
Explains the recording of motor running/stopped time, percent running time, and total energy consumed.
Describes the recording of average and peak values for key measurements like starting time, current, and thermal capacity.
Explains how the relay learns motor cooling time and starting thermal capacity from collected data.
Details how the relay records the number and type of element alarms and trips for motor protection.
Lists information within the motor start report summary, including start date, acceleration time, and thermal capacity.
Explains the capture and output format of motor start data, recorded every 5 cycles.
Describes the comma-delimited format of the motor start report for spreadsheet integration.
Explains the motor start trending function, tracking summary data for eighteen 30-day periods.
Introduces the tools available for analyzing relay operations to diagnose faults and restore motor service.
Explains the target LEDs on the front panel, indicating relay status, motor condition, and active protection elements.
Details how to reset tripping targets using the front-panel menu or serial port command.
Describes the behavior of the Motor Energized LED indicating motor stopped, starting, or running states.
Explains that trip messages are displayed automatically on the front panel to indicate the cause of a trip.
Lists automatic messages displayed under specific conditions like motor overload or self-test failures.
Explains that the relay captures detailed information for event reports and stores recent reports and summaries.
Details how the SIMPRO-100 Relay captures and stores detailed information for event reports, including measurements and status.
Lists conditions that trigger an event report, including relay trips, user commands, and programmable events.
Explains how to use the serial port EVENT command to retrieve event reports with various formatting options.
Defines columns in event reports, including current, voltage, output, input, and element status.
Summarizes event report current and voltage columns, defining measurements like IA, IB, IC, and voltage inputs.
Summarizes event report columns for output contacts, inputs, and relay element control states.
Explains how to view raw inputs using the unfiltered event report command for analyzing harmonics and DC offset.
Describes using the HISTORY R command to clear event summaries and reports from memory.
Explains how the relay stores SER entries for state changes of elements listed in SER trigger settings.
Details renaming SER trigger conditions using ALIAS settings for easier report review.
Guides on defining aliases for Relay Word bits, including asserted and deasserted text strings, up to 15 characters each.
Recommends monitoring the ALARM contact and reviewing event reports for effective relay maintenance.
Advises using Status of Relay function or command to verify relay self-tests for out-of-tolerance conditions.
Suggests comparing relay meter readings to a separate meter for verifying current and voltage measurements.
Details checking contact input status by short-circuiting inputs and observing the front-panel display.
Explains verifying contact output performance using the Pulse Out Contact command for TRIP and other outputs.
Explains the relay's self-tests and the ALARM contact's role in indicating failures or de-energization.
Describes the relay's actions when protection functions are disabled due to self-test failures.
Provides causes and solutions for the Relay Enabled LED being dark, related to input power or self-test failures.
Offers troubleshooting steps for display issues, including timeout activation and verifying input power continuity.
Lists potential causes and solutions for inaccurate voltage/current measurements, including wiring and setting errors.
Provides troubleshooting for serial port communication issues, covering cable, baud rate, and protocol configuration.
Suggests checking relay settings, test source settings, input wiring, and self-test results for fault response issues.
Explains how to replace the relay's internal fuse, detailing specifications and part numbers.
Guides on replacing the real-time clock lithium battery, including removal and installation steps.
Lists essential equipment for firmware upgrades, including PC, software, serial cable, and firmware file.
Provides step-by-step instructions for upgrading firmware using terminal emulation or SIMPRO-PC software.
Continues firmware upgrade steps, covering saving settings, communication parameters, and file transfer initiation.
Introduces programmable logic for customizing relay functions using control equations and Relay Word bits.
Explains the relay's internal processes and programmable logic capabilities, illustrated by a process diagram.
Details how the relay acquires and filters AC signals, sampling at 16 times per power system cycle.
Explains how the relay processes acquired signals to determine protection element status (picked up or dropped out).
Defines Relay Word bits as internal representations of element results, existing in true/false states.
Explains Relay Word bits as representations of element results, collected into a table (Relay Word) used by commands like TAR.
Describes how control equations combine relay elements and logic operators to create custom protection and control schemes.
Lists and explains logic operators (AND, OR, NOT) and edge detection operators (Rising, Falling) for control equations.
Explains the use of the asterisk [*] symbol for logical AND operations between Relay Word bits.
Explains the use of the plus [+] symbol for logical OR operations, where either bit can trigger the action.
Describes the falling-edge operator [\ ] for single-cycle assertions when a Relay Word bit changes from logical 1 to 0.
Explains the rising-edge operator [/ ] for single-cycle assertions when a Relay Word bit changes from logical 0 to 1.
Details using parentheses to logically combine elements in control equations, with limitations on nesting.
Outlines limitations for single control equation settings and the sum of all settings, reporting capability usage.
Explains how FACTLOG setting controls the display and modification of factory default logic and other settings.
Describes four text display messages, each with complementary screens controlled by DMn settings for displaying conditions.
Introduces four nondedicated variables (SV1-SV4) used in control equations, with associated timers.
Explains the latch control switch feature, replacing traditional relays by pulsing set/reset inputs for output contacts.
Advises caution when setting latch controls due to nonvolatile memory write limits and potential EEPROM failure.
Describes the logic for tripping or stopping motors, defining conditions for trip initiation and unlatching.
Outlines three methods to stop the motor: TRIP control equation, STOP command, or remote bit function.
Explains the conditions required to maintain a trip signal until a fault condition is cleared and lockout conditions are satisfied.
Defines the 52A setting for breaker auxiliary contact input, allowing custom control functions like breaker failure logic.
Illustrates the logic for initiating motor starts, including the START Relay Word bit and Emergency Restart.
Shows how factory settings route the start logic result to output contact OUT3 via a control equation.
Describes Modbus RTU communication features supported by the EIA-485 port when Modbus protocol is enabled.
Details Modbus RTU protocol, including master queries, slave responses, function codes, and exception responses.
Explains the fields in a Modbus RTU query: Slave Device Address, Function Code, Data Region, and CRC.
Lists the Modbus function codes supported by the SIMPRO-100 Relay, such as Read Coil Status and Preset Single Register.
Describes exception codes the relay sends for errors like illegal function code, illegal data address, or device errors.
Explains the CRC-16 algorithm used for error detection to validate received data and ensure packet integrity.
Details function code 01h for reading the On/Off status of selected bits (coils), up to 2000 bits per query.
Explains function code 02h for reading the On/Off status of selected bits, up to 2000 bits per query.
Describes using function code 03h to read registers from the Modbus Register Map, up to 125 registers at once.
Details using function code 04h to read registers from the Modbus Map, up to 125 registers at once.
Explains function code 05h for data control, including clearing records, operating output contacts, and breaker elements.
Describes function code 06h to allow a Modbus master to write directly to a database register.
Explains how the SIMPRO-100 Relay allows a Modbus master to read the present status of the relay and protected motor.
Details using function code 08h for diagnostic testing of Modbus communication channels and the relay.
Explains function code 10h for writing multiple registers at once, up to 100 per operation.
Describes how the Modbus Register Map allows control of relay output contacts and Relay Word Remote Bits.
Explains how to set the relay clock and calendar using Modbus Function Code 10h commands.
Details reading present relay self-test results using Modbus Map addresses and interpreting the results.
Explains the Modbus Register Map's feature for defining 125 user settable addresses for custom data regions.
Describes how to download complete event data via Modbus, including summary and analog event data.
Provides a comprehensive table of Modbus register addresses, fields, samples, low/high limits, steps, and types.
Continues the Modbus register map, detailing addresses for commands, real-time clock, user map values, and relay elements.
Continues the Modbus register map, detailing addresses for relay status, instantaneous metering, and thermal metering.
Continues the Modbus register map, detailing addresses for energy metering, demand metering, and peak demand metering.
Continues the Modbus register map, detailing addresses for current max/min metering, RTD max/min metering, and thermal metering.
Continues the Modbus register map, detailing addresses for voltage/power max/min metering and RTD temperature settings.
Introduces communication features supported by serial ports for ASCII communications, including compressed ASCII commands.
Lists binary messages used for relay configuration and status, categorized by Hex and ASCII requests.
Provides definitions for Fast Binary Messages, including A5C0, A5C1, A5D1, A5C2, A5D2, A5C3, A5D3, A5B9, A5CE, A5E0, A5E3.
Details the block sent in response to an A5CE request, including command, length, and operate codes.
Lists the data and description for the A5CE Fast Operate Configuration Block.
Explains how to use the A5E0 command to operate Remote Bits RB1-RB4, including command structure.
Details the A5E3 command for stopping or starting the protected motor, requiring proper output contact connection.
Describes the ID command response, including firmware ID, boot code, relay settings, device code, part number, and configuration.
Explains the DNA command response, which sends names of Relay Word bits from the A5D1 message.
Describes the BNA command response, which sends names of bits transmitted in the A5D1 Status Byte.
Introduces compressed ASCII versions of commands for efficient data extraction into spreadsheet or database programs.
Explains the CASCII command for obtaining configuration messages and the relay's response format.
Details the general format of the compressed ASCII configuration message and its components like headers and data format designators.
Explains how the SIMPRO-100 Relay sends compressed ASCII configuration messages, replacing italics with actual data.
Explains the CSTATUS command to display status data in compressed ASCII format, showing enabled/disabled status and checksum.
Describes the CHISTORY command to display history data in compressed ASCII format, showing data values and checksum.
Explains the CEVENT command to display event reports in compressed ASCII format, showing event number, date, time, and type.
Details the CME E command for displaying energy meter data in compressed ASCII format, showing various energy values.
Explains the CME M command for displaying Max/Min meter data in compressed ASCII format, showing max/min values for various parameters.
Describes the CME T command for displaying thermal meter data in compressed ASCII format, including thermal capacity and RTD values.
Introduces the SIMPRO-100 Relay's motor thermal protection using a patented algorithm with three setting methods.
Explains the purpose of motor thermal protection, relating it to motor starting characteristics and continuous heavy load operation.
Describes the electrical analog of a thermal system, including heat source, capacitance, impedance, and comparator.
Illustrates the thermal element used during motor starting, focusing on locked rotor heating and heat transfer.
Explains the thermal element's operation during motor starting, including heat estimates and trip values.
Describes the motor running thermal element, its path for energy return, and how resistor value is determined.
Details how the motor running thermal element determines resistor value and describes the final running thermal element.
Explains how the relay calculates % Thermal Capacity and its meaning when reaching 100% for tripping.
Discusses comparing % Thermal Capacity across multiple starts and how the report helps identify increasing load torque.
Explains the importance of starting thermal capacity and how the relay ensures safe motor starts using fixed values or learned data.
Presents factory default settings for the SIMPRO-100 Relay, covering general data like identifiers, CT/VT ratios, and phase rotation.
Details general data settings including relay and terminal identifiers, CT/VT ratios, phase rotation, nominal frequency, and date format.
Describes thermal element settings, including setting methods (Rating, Generic, User) and their respective parameters.
Details thermal element settings for the Rating method, including Full Load Amps, Service Factor, Locked Rotor Amps, and time settings.
Explains thermal element settings for the Generic method, including Full Load Amps, Service Factor, and Curve Number selection.
Details thermal element settings for the User method, allowing custom curve construction with time-to-trip points.
Describes Overcurrent elements, including phase, residual, and neutral overcurrent pickups and time delays.
Explains settings for Jogging Block elements, including maximum starts per hour and minimum time between starts.
Details Load-Jam settings, including trip pickup and delay parameters for detecting motor load jamming.
Describes Load-Loss element settings, including alarm and trip thresholds and time delays, with options for voltage input availability.
Explains current unbalance settings, including alarm and trip pickups and time delays for detecting phase current unbalance.
Details the Phase Reversal Tripping setting (E47T) to detect incorrect phase rotation and trip the motor.
Describes the Speed Switch Tripping Time Delay setting (SPDSDLY) for additional locked rotor protection.
Explains RTD input options (INT, EXT, NONE) and temperature preference settings (C or F).
Guides on defining RTD locations (WDG, BRG, AMB, OTH, NONE) for each monitored RTD input.
Lists the available RTD types (PT100, NI100, NI120, CU10) that can be configured for each input.
Details RTD temperature settings for trip and alarm levels, including enabling winding and bearing trip voting.
Introduces voltage-based protection functions, including undervoltage, overvoltage, underpower, power factor, and frequency elements.
Describes Undervoltage elements for phase-to-phase and phase-to-neutral potentials, including pickup and time delay settings.
Details Overvoltage elements for phase-to-phase and phase-to-neutral potentials, including residual overvoltage pickup.
Explains Reactive Power element settings, including alarm and trip pickups and time delays for synchronous motors.
Describes Underpower element settings, including alarm and trip pickups and time delays for detecting low real power consumption.
Details Power Factor element settings, including alarm and trip pickups and time delays for synchronous motors.
Explains Frequency elements settings, providing three levels for over/under-frequency detection with pickup and time delay.
Describes analog output settings, including signal type (0-1mA, 0-20mA, 4-20mA) and output parameter selection.
Details front-panel display settings for power display, RTD display, timeout, and brightness adjustment.
Explains display message settings (DMn) to control up to four logic conditions and eight display messages.
Covers output contact settings, including enable fail-safe options for TRIP, OUT1, OUT2, OUT3, and ALARM contacts.
Details the Antibackspin Setting (ABSDLY) to prevent motor starts during backspin periods after stopping.
Explains factory logic settings (FACTLOG) that generate trip/alarm outputs and control inputs based on default logic.
Covers serial port settings for front and rear panels, including protocol, baud rate, data bits, parity, and stop bits.
Details ASCII protocol settings for serial ports, including baud rate, data bits, parity, stop bits, timeout, and handshaking.
Explains Modbus protocol settings for the rear-panel serial port, including baud rate, parity, and Modbus Slave ID.
Outlines SER settings, including SER trigger settings (SER1-SER4) and ALIAS settings for customizing report display.
Details SER trigger settings, allowing configuration of up to 96 conditions using Relay Word bits.
Explains SER Alias settings for renaming trigger conditions and customizing text displayed for asserted/deasserted states.
Guides on defining aliases for Relay Word bits, including asserted and deasserted text strings, up to 15 characters each.
Defines terms starting with A, B, and C, including abbreviations for amps, alias, ambient temperature, and Modbus.
Defines terms starting with D, E, F, G, H, I, including deassert, EEPROM, event report, and horsepower.
Defines terms starting with J, K, L, M, N, O, P, including key switch, learned parameters, and phase reversal element.
Defines terms starting with Q, R, S, T, U, V, including RAM, relay word, RMS, and voltage measurements.
Defines terms starting with W, X, Y, Z, including Wye connection, terminal emulation software, and underfrequency element.
General| Switching Voltage | Up to 250VAC |
|---|---|
| Mechanical Life | 10, 000, 000 operations |
| Contact Configuration | SPDT |
| Electrical Life | 100, 000 operations |
| Storage Temperature | -40°C to +70°C |
| Operating Voltage | 24V DC |
| Contact Rating | 5A at 250V AC |
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