Operating Instructions

Warning Codes
Digital Keypad RT-KEYPAD
280 | 443
too short
V/F voltage is too high
Adjust the V/F curve (Motor 4, Pr.01-63–01-70), especially the setting value for the mid-point
voltage (if the mid-point voltage is set too small, the load capacity decreases at low-speed).
The motor capacity is too small
Replace with a motor with larger capacity.
Overload during low-speed operation
Decrease the loading during low-speed operation.
Increase the motor capacity.
The torque compensation is too large
Adjust the torque compensation value (Pr.07-75 torque compensation gain) until the output
current decreases and the motor does not stall.
Improper parameter settings for the speed
tracking function (including restart after
momentary power loss and restart after
fault)
Correct the parameter settings for speed tracking.
Start the speed tracking function.
Adjust the maximum current for Pr.07-09 speed tracking.
ID No.
Display on LCD Keypad
Warning Name
Description
36
CANopen guarding time-out
(CGdn)
CANopen guarding time-out 1
Action and Reset
Action level
When CANopen Node Guarding detects that one of the slaves does not respond, the CGdn error
displays.
The upper unit sets the factor and time during configuration.
Action time
The time that upper unit sets during configuration
Warning setting parameter
N/A
Reset method
Manual reset
Reset condition
The upper unit sends a reset package to clear this warning.
Record
N/A
Cause
Corrective Actions
The guarding time is too short, or less
detection times
Increase the guarding time (Index 100C) and detection times.
Malfunction caused by interference
Verify the wiring and grounding of the communication circuit. It is recommended to separate the
communication circuit from the main circuit, or wire in 90 degree for effective anti-interference
performance.
Make sure the communication circuit is wired in series.
Use CANopen cable or add terminating resistance.
ID No.
Display on LCD Keypad
Warning Name
Description
37
CANopen heartbeat error
(CHbn)
CANopen heartbeat error
Action and Reset
Action level
When CANopen Heartbeat detects that one of the slaves does not response, the CHbn error
shows.
The upper unit sets the confirming time of producer and consumer during configuration.