JVL MAC050 User Manual page 44

2.6
2.6.19 Error message 'PWM locked' (only MAC400/800)
Message no. / Message
Type / Motor action
Error condition
Possible cause of this error
Solutions to avoid error
How to return to normal
operation
Error bit / Firmware name
2.6.20 Error message 'Modbus Com. Error' (only MAC400/800)
Message no. / Message
Type / Motor action
Error condition
Possible cause of this error
Solutions to avoid error
How to return to normal
operation
Error bit / Firmware name
40 JVL Industri Elektronik A/S - User Manual - Integrated Servo Motors MAC050 - 800
Error Handling
21 / '
PWM Locked
Unrecoverable error / Motor is set in passive mode.
An uUnrecoverable errornrecoverable error has occured and the
motor output driver is shut down in order to prevent any further
damages. The error could be one of following.
- The motor current has been significantly higher than allowed
during normal operation.
- The internal encoder has a fault.
This error is typically followed by other error messages. See in-
dividual description of these errors.
- See other error messages that follows this error.
- This error type is not software resetable. Cycle the control volt-
age (24VDC).
Bit 20 / 'PWM_LOCKED'
22 / '
Modbus Com. Error
Unrecoverable error / Motor is set in passive mode.
Modbus communication has not been possible due to a commu-
nication error.
- The motor is setup as master but it has not been possible to
reach a slave motor.
- The motor is setup as a slave but do not receive any position
information
- If the actual system is a master/slave configuration, make sure
that a slave motor is present.
- Make sure that the cabling is made in a proper manner with
twisted pair wires and screened cable.
- Make sure that the opposite unit in the communication system
uses same parameters such as baudrate etc.
- Adjust the time out register.
- The error is cleared if error free communication is re-estab-
lished but the motor need to be re-entered in the desired op-
eration mode.
- Try to save actual settings and restart the motor by a reset or
cycle the power (24VDC).
Bit 21 / 'COM_ERR'
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