JVL MIS17 Series User Manual page 170

7.2
7.2.6 Error message 'Position limit'
Message no. / Message
Type / Motor action
Error condition
Possible cause of this error • One of the position limits is reached.
Solutions to avoid error
How to return to normal
operation
Error bit / Firmware name
7.2.7 Error message 'Low bus voltage'
Message no. / Message
Type / Motor action
Error condition
Possible cause of this error • The current rating of the external power supply is too small.
Solutions to avoid error
How to return to normal
operation
Error bit / Firmware name
170 JVL Industri Elektronik A/S - User Manual - Integrated Stepper Motors MIS17x, 23x, 34x, 43x
Error messages
3 / 'Position limit'
Unrecoverable error / Motor is set in Passive mode.
This error relates to both the Hardware and software position limits.
It is set when one of the 4 conditions is true:
• The positive sensor has been active
• The negative sensor has been active
• Actual Position is greater or equal to Max position (register 30)
• Actual Position is less or equal to Min position (register 28)
• Noise on the hardware limit input.
• Faulty limit sensor.
• When position limits are activated, make sure that the motor does
not reach the limits. An internal absolute multi turn encoder can
be a good help to avoid reaching the limits.
• If the motor must reach the limits, but also stay in the active
mode, it is possible to disable the 'Position limit' error message
by setting Setupbit 17 in register 124. Please see
page 128
• If noise has triggered the hardware position limits, it is recom-
mended to add some digital filtering on the inputs. The easiest
way to do this is by connecting the motor to MacTalk and setup
the filter for the specific input on the I/O setup tab. See also
ital input filter setup with
• Clear the error bits in register 35.
• Return to the desired active mode. It is now only possible to run
the motor in the opposite direction of the limit.
• Reset the motor / Cycle the power
Bit 3
4 / 'Low bus voltage'
Unrecoverable error / Motor is set in Passive mode.
• The measured bus voltage is lower than the level Min_Busvol (regis-
ter 98).
• The voltage of the P+ bus voltage has been measured to be lower
than the limit selected in the register 'Min_Busvol' (register 98). This
has resulted in an error as configured in the setup of 'Undervoltage
handling'. See also
• The power supply is not able to deliver the required peak currents
that the motor need. This is a typical problem when using switch
mode power supply.
• The power cable is under dimensioned.
• The under voltage min. setting must be decreased.
•
Use a power supply with a higher current rating.
•
Use a power cable with at least 0,75mm² wires (up to cable lengths of 10m.
If the power cable is longer, use 1,5mm² or use multiple wires in parallel.
•
Connect a capacitor across the supply line close to the motor. Especially if
using a switch mode power supply this will help.
•
Reset the motor, clear the error bit(s) in register 35 or cycle the power.
Bit 4
MacTalk:, page 23
Under voltage Handling, page
Position Limits,
Dig-
133.