JVL MAC050 - Page 47

JVL A/S - User Manual - Integrated Servo Motors MAC050 - 4500 43
2.7 Error messages and error handling
2.7.14 Error message ’Overspeed’ (only MAC400 to MAC4500)
Error message 15 do not exist since bits are used for other status purposes.
2.7.15 Error message ’SSI Read error’ (only MAC050 to 141-A)
Message no. / Message
14 / ’Overspeed’
Type / Motor action Unrecoverable error / Motor is set in passive mode.
Error condition The actual velocity (speed) has been higher than allowed.
Please note that this message is only available in MAC400, 402,
800, 1200, 1500, 3000 and MAC4500.
Possible cause of this error
- Velocity too high.
- Servofilter is not stiff enough and speed may overshoot dur-
ing start and/or stop or when sudden load changes happens.
This error is triggered at 4300 RPM (MAC400 and MAC402)
and 3600 RPM (MAC800, MAC1200, MAC1500, MAC3000
and MAC4500).
Solutions to avoid error - Make sure that the velocity setting is within specified range
(0-3000 RPM nominal).
- Make sure that the servo filter is set to stable setting in order
to avoid overshoots during acceleration or similar. See also
Servo filter adjustment, page 49.
How to return to normal
operation
- Reset the motor, clear the error bit(s) in register 35 or cycle
the power.
Error bit / Firmware name Bit 13 / ’SPEED_ERR’
Message no. / Message
16 / ’SSI Read error’
Type / Motor action Unrecoverable error / Motor is set in passive mode.
Error condition
An external SSI encoder has been enabled but communication
with the encoder has failed.
Possible cause of this error - The encoder is not connected correctly.
- The format chosen is not compatible with the actual encoder.
- Improper cabling have been used.
Solutions to avoid error - Use proper cabling between the motor and the external SSI
encoder. A screened cable with twisted pair wires is recom-
mended.
- Make sure that the right SSI format is selected.
How to return to normal
operation
- Reset the motor, clear the error bit(s) in register 35 or cycle
the power.
Error bit / Firmware name Bit 15 / ’SSI_ERR’