JVL MAC050 User Manual page 49

2.7 Error messages and error handling
2.7.19 Error message 'PWM locked' (only MAC400 to MAC4500)
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
2.7.20 Error message 'Modbus Com. Error' (only MAC400 to MAC4500)
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
JVL A/S - User Manual - Integrated Servo Motors MAC050 - 4500
21 / 'PWM Locked'
Unrecoverable error / Motor is set in passive mode.
An unrecoverable error has occured and the motor output
driver is shut down in order to prevent any further damages.
This error always takes place in combination with one or more
other errors. These errors can be one of following:
- "Peak error, motor over current" (Bit 12) The motor current
has been significantly higher than allowed during normal op-
eration.
- "Internal Encoder Error" (Bit 15). The internal encoder has a
fault.
- "Invalid Filter settings" (Bit 16). The actual filter used is an old
version or corrupted because wrong values have been trans-
ferred to the motor.
- "Control voltage unstable" (Bit 17). The 24V control voltage
has been unstable.
This error is always followed by other error messages. See in-
dividual description of these errors. See also error condition
above.
- See other error messages that follows this error.
- This error type is not software resetable. Cycle the control
voltage (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 com-
munication 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 sys-
tem 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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