JVL MIS17 Series User Manual page 174

7.2
7.2.15 Error message 'Closed loop'.
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
7.2.16 Error message 'External memory'
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
7.2.17 Error message 'Single turn encoder error'
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
174 JVL Industri Elektronik A/S - User Manual - Integrated Stepper Motors MIS17x, 23x, 34x, 43x
Error messages
12 / 'Closed loop'
Unrecoverable error / Motor is set in Passive mode.
The encoder and motor is misaligned.
The motor has been updated to a newer firmware where a
new calibration is required for closed loop operation.
The error only occurs when activating the closed loop. If
closed loop is not needed, then just deactivate it and save
the setting by using "Save in Flash".
The motor must be calibrated. This is done by following
procedure:
1. Disconnect any load from the motor shaft.
2. Write 383 to register 24.
3. Wait ~60 seconds for the calibration to finish.
4. When the motor stands still and register 51 (P2) reads 7,
then the motor can be reset by writing 267 to register 24
or simply by cycling the power (CVI).
5. Now the motor should run in closed loop.
See also: http://www.jvl.dk/files/me/mis_cl_error_guide.pdf
Bit 12
13 / 'External memory'
Unrecoverable error / Motor is set in Passive mode.
The controller has build in memory for the "Event log".
The memory self test has failed because of faulty hardware inside
the motor.
Return the motor for service.
• This error will only be set during startup and can be cleared af-
terwards. Then the motor operation will be the same, but the
"Event log" will not work.
• Clear the error bit(s) in register 35.
Bit 13
14 / 'Singleturn encoder error'
Unrecoverable error / Motor is set in Passive mode.
The absolute single turn encoder (H2/H4) has failed.
• Wrong setup.
• The distance between the internal magnet and the internal en-
coder sensor is outside the limits caused by too high force at the
motor shaft in forward or backward direction.
• Take care when changing settings in Internal_Encoder_Setup
(register 175).
• Do not expose the shaft or the motor for mechanical shocks.
• If the error appeared after changing some settings, please try to
"Load factory defaults" in MacTalk.
• Cycle the power to the motor.
Bit 14