To Next PageTo Next PageHow to fix RS485 communication error on Cerus Industrial DC Drives?
To resolve RS485 communication errors with Cerus Industrial DC Drives, ensure the converter is receiving electrical power. Also, verify that the master is polling the inverter and that the wiring is correct as per section '13.3 Installation'. Finally, revise the User Program, paying attention to Note1.
General| Control Method | PWM (Pulse Width Modulation) |
|---|---|
| Protection Features | Overcurrent, Overvoltage, Undervoltage, Overtemperature, Short Circuit |
| Communication Interface | Modbus RTU |
| Humidity | 5% to 95% non-condensing |
| Dimensions | Varies by model |
| Weight | Varies by model |
Basic guidelines for handling and installing the product.
Instructions and precautions related to wiring the inverter.
Steps and considerations for the initial operation or trial run.
Important precautions to follow during the operation of the inverter.
Measures to prevent faults and ensure safety.
Guidelines for maintaining, inspecting, and replacing parts.
Instructions on how to dispose of the inverter properly.
General guidance and important reminders for users.
Key precautions for unpacking, inspecting, and preparing the inverter.
Overview of the inverter's appearance and internal components.
Instructions on how to remove and attach covers for maintenance.
Safety and environmental precautions for installing the inverter.
Physical dimensions of the inverter models.
Details on the wiring of control input/output terminals.
Schematic and connection details for power terminals.
Wire size, screw size, and torque specifications for power terminals.
Steps for correctly grounding the inverter.
Guidance on wire size and terminal screw for grounding.
Specifications for control terminals, including wire size and torque.
How to select PNP/NPN input and connect communication options.
How to connect peripheral devices like AC source, breakers, contactors.
Table of recommended circuit breakers for different inverter models.
Table of recommended AC reactors for different inverter models.
Overview of the keypad's display indicators and buttons.
How characters are displayed on the LED keypad.
Navigation between different parameter groups using keypad keys.
Step-by-step guide to modifying parameter values within a group.
Detailed steps for changing parameter values in the Drive Group.
How to monitor inverter status like output current and DC link current.
Step-by-step guide to setting frequency and basic operation via keypad.
List of parameters and their descriptions for the Drive Group.
List of parameters and their descriptions for Function Group 1.
List of parameters and their descriptions for Function Group 2.
List of parameters and their descriptions for the Input/Output group.
Block diagram illustrating frequency and drive mode settings.
Block diagram showing Accel/Decel settings and V/F control.
Configuration options for setting the inverter's operating frequency mode.
Configuration for setting multiple frequency steps for operation.
How to set operating commands using the keypad or terminals.
Configuration for the inverter's behavior upon power application.
Setting for automatic restart after a fault condition is cleared.
How to set acceleration and deceleration times and patterns.
How to configure acceleration and deceleration patterns (Linear, S-curve).
Explanation of V/F control patterns (Linear, Square, User V/F).
How to adjust the inverter's output voltage.
Configuration for manual torque boost settings.
How to enable and configure auto torque boost.
Options for selecting how the motor stops (Decel, DC brake, Free run).
Setting maximum and minimum frequency limits for operation.
How to skip specific frequency ranges to avoid resonance.
How to use DC brake to stop the motor and its related settings.
How to configure and perform jog operation for precise motor movement.
How to use UP/DOWN commands for frequency adjustment.
Configuration for 3-wire control operation.
How to set and use dwell operation for specific applications like elevators.
How to compensate for motor slip to maintain constant speed.
Configuration and use of the PID control loop for precise regulation.
How to perform auto-tuning for motor parameter measurement.
Setup and configuration for sensorless vector control operation.
How to configure the inverter for energy-saving operation.
How to use speed search to find motor speed during startup or after power loss.
Configuration for automatic restart attempts after a fault.
How carrier frequency affects inverter sound and performance.
How to configure operation for a second motor.
How to use the self-diagnostic function to check for internal faults.
How to perform option-inverter exchange using RS485 communication.
How to control the inverter's cooling fan operation.
How the inverter operates if the cooling fan fails.
How to read and write inverter parameters using a remote keypad.
How to initialize parameters and lock/unlock settings with a password.
How to monitor inverter status like output current, motor RPM, and DC link voltage.
How to monitor the status of input and output terminals.
How to view current fault status and fault history.
How to configure analog output signals for monitoring.
How to configure multi-function output terminals and relays for various signals.
How to select output terminals during communication errors.
Configuration of electronic thermal protection for motor overheating.
Setting up overload warning and trip functions for motor protection.
How to prevent motor stall during acceleration, run, or deceleration.
Protection against output phase loss for motor and inverter safety.
How to use external trip signals for safety shutdown.
How the inverter prevents overload conditions.
How the inverter handles loss of frequency command.
How to set the duty limit for the DB resistor.
Overview of RS485 communication capabilities.
Performance and hardware specifications for RS485 communication.
Instructions for connecting the RS485 communication line.
Steps for operating the inverter via computer connection.
Details of the MODBUS-RTU communication protocol.
Details of the CERUS BUS communication protocol.
List of common parameters with their addresses and data values.
Troubleshooting steps for RS485 communication errors.
ASCII code list for reference.
Displays and descriptions of inverter protective functions and faults.
Causes and remedies for various inverter faults.
Safety precautions to follow during maintenance and inspection.
Daily and periodic inspection checklist for the inverter.
Guidelines for periodic replacement of inverter parts.
Electrical and mechanical specifications for 230V and 460V GS series inverters.
How ambient temperature affects inverter current capacity.
Information on the remote keypad and cable options.
Information on conduit options (Reserved).
Information on EMC filter options (Reserved).
Specifications for braking resistors.
Information on service and contact details for in-warranty repairs.
Conditions under which the guarantee is not applicable.
