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Manual covers installation, programming, operation, and maintenance procedures for the P Series VFD.
Explains the meaning of danger, warning, and caution symbols used throughout the manual.
Covers safe handling, lifting, stacking, and installation procedures for VFDs.
Details precautions for connecting input power, motor wires, and control circuits to the VFD.
Outlines essential checks and procedures before powering up and starting the VFD.
Provides guidelines for VFD operation, including auto-restart, keypad usage, and parameter settings.
Addresses safety aspects during operation, such as emergency stops and automatic start functions.
Details the required peripheral devices and correct connections for proper VFD operation.
Provides essential precautions for handling, mounting, and installing VFDs to ensure safety and proper operation.
Illustrates fundamental power and motor connection diagrams for various VFD models.
Details basic control wiring for 7.5-40HP VFDs, including analog inputs and common terminals.
Explains basic control wiring for 50-700HP VFDs, noting common terminals for analog inputs.
Illustrates terminal layouts for digital and analog control circuits for different VFD classes.
Defines the functions and descriptions of VFD control inputs and outputs, including digital and analog signals.
Provides recommendations for VFD power wiring and essential grounding procedures.
Lists recommended wire sizes, terminal lugs, and screw torque for VFD power and motor wiring.
Offers recommendations for control circuit wiring, emphasizing cable types and separation.
Explains the selection of NPN or PNP modes for digital control inputs and their configuration.
Details wiring for RS485/Modbus RTU communication, including dip switch settings and cable connections.
Describes the LCD keypad, its dimensional drawing, and illustration of its keys and functions.
Explains the meaning of the VFD display elements, including parameter groups, status, and current readings.
Details the procedure for navigating and programming VFD parameters using the keypad.
Categorizes VFD parameters into eight functional groups for easier navigation and understanding.
Explains different control modes for VFD operation, including Easy Start, Keypad, and Remote control.
Describes how to switch between local and remote control modes and the function of the Local/Remote key.
Explains how to control the VFD via Modbus-RTU communication using external devices.
Details control using optional communication cards like LonWorks, N2, and BacNet.
Lists common parameter settings that need checking before VFD startup for optimal performance.
Details parameters for VFD and motor protection, including overload, stall, and trip settings.
Explains how to read, write, initialize, and save VFD parameters to a keypad.
Details parameters for configuring VFD auto-start behavior under different conditions like power loss.
Describes various control methods and patterns like stop modes, PID, and acceleration/deceleration curves.
Provides examples of common digital control configurations for VFD operation.
Illustrates four common VFD speed control configurations using analog signals.
Configures the fault relay mode using binary bit format for different fault conditions.
Configures motor overheat protection using PTC or NTC sensors and sets the trip temperature.
Enables or disables the internal PID control functionality for maintaining process values.
Specifies the source for the PID feedback signal, such as analog input or pulse frequency.
Enables Pipe Broken Mode to detect pipe breaks by monitoring output speed and feedback.
Enables Multi-Motor Control and Lead-Lag features for managing multiple auxiliary motors.
Configures VFD to monitor a selected source for Under Level condition and trip if detected.
Enables LDT trip and fill time for dry well protection, allowing VFD to trip and restart after a delay.
Configures torque boost for low speed starting, including manual and auto modes.
Saves all VFD parameters to a keypad memory for backup and transfer.
Details DC Injection Braking settings: delay, frequency, time, and value.
Enables Safety Stop to decelerate motor using regenerative power during power outage or load inertia.
Protects VFD from faults when motor is not connected or has low current during operation.
Provides motor protection based on an inverse thermal curve, configurable for 1-minute and continuous operation.
Sets overload warning level and time, triggering an alarm output and warning message.
Configures overload trip level and time, causing VFD to trip on overload fault.
Trips VFD on Input or Output phase loss by monitoring DC bus ripples or output current.
Enables Stall Prevention Mode and sets the motor FLA percentage to limit current by decreasing motor speed.
Loads saved VFD parameters from a keypad to VFD memory, useful for multiple VFDs.
Saves information for up to five last faults and provides a function to erase fault history.
Configures VFD auto-restart attempts after tripping on a fault, including number and delay.
Allows VFD to start with a rotating load without tripping, calculating remaining speed.
Selects VFD control mode: V/F, Slip Compensation, or Sensorless.
Enables Auto Tuning for Sensorless control to provide stable motor control without motor shaft rotation.
Scales and adjusts analog voltage input parameters (V1, V1S) for PID control and speed reference.
Scales and adjusts analog current input parameters (I) for PID control and speed reference.
Scales and adjusts pulse input parameters for frequency control, including pulse type and filter time.
Defines criteria for detecting analog signal loss and the VFD's reaction based on I/O-18 selection.
Specifies VFD behavior (Hold, Decel, Coast, Protection) during analog signal loss.
Details the universal programming selections for digital inputs M1 through M8.
Lists available functions for M1-M8 digital inputs, including speed selection, reset, and jog.
Provides seven sets of Accel/Decel time settings for custom speed control curves.
Enables Damper or Lubrication mode for pumps, activating relays and timers.
Configures 0-10VDC analog outputs (S0, S1) for Frequency, Current, Voltage, kW, or Ext. PID Out.
Activates AUX relay set to FDT at predetermined frequency by FDT modes.
Selects AUX relay closure for Overload Warning Level and Time.
Selects AUX relay closure for VFD overload condition based on current and time.
Selects AUX relay closure when VFD is in stall prevention mode.
Selects AUX relay closure when DC link voltage exceeds the Over voltage protection level.
Selects AUX relay closure when DC link voltage falls below the Low voltage level.
Selects AUX relay closure for VFD or motor overheat condition.
Selects AUX relay closure when VFD detects a Pipe Broken condition and trips.
Selects alternation mode for auxiliary motors: None, Aux, or Main.
Enables external (2nd) PID control for processing system values.
Illustrates VFD wiring for PID control, including keypad, digital inputs, and transducer connections.
Presents a PID block diagram showing operation parameters and VFD output.
Diagram illustrating PID control sleep mode with pressure boost functionality.
Diagram showing PID control behavior and VFD response to pipe broken conditions.
Diagram illustrating PID control with Pre-PID function for pipe filling.
Lists VFD faults displayed on the keypad, their protective function, and description.
Provides causes and recommended remedies for various VFD protective functions and faults.
Lists common VFD operating conditions and their checking and fixing procedures.
Details how to check VFD power components like diode bridges and IGBT modules using a multimeter.
Provides test procedures for diode bridge and IGBT modules on 7.5-40HP VFDs.
Details test procedures for diode bridge and IGBT modules on 50-700HP VFDs, including SCRs.
Recommends routine inspections of all operating VFDs.
Highlights essential precautions before performing VFD maintenance, such as input power removal.
Describes how to test motor winding insulation using a Megger tester.
Illustrates the basic wiring diagram for connecting a Dynamic Braking Unit and Resistor to the VFD.
Guides on sizing dynamic braking resistors based on motor size, duty cycle, and braking torque.
Details warranty periods and conditions for variable and constant torque applications.
Provides contact information for authorized service centers for defective parts under warranty.
Lists cases where Cerus warranty is not applied, including misuse, accidents, and unauthorized alterations.
General