IB-11B012 INDUSTRIAL INDEXING SYSTEMS, INC.
USER'S GUIDE MOTION CONTROL SYSTEM, MSC-250
4 - 10 MAINTENANCE AUGUST 1998
e. Troubleshoot the drive of a shared encoder according to the manufacturer's
instructions.
4.2.2.4 Encoder and Power Supply Test
This test is used when the INT-810 Interface module is used with the MSC-250 controller.
1. Remove controller and system power.
2. Open the controller cover and set the MODE selector switch to position 3. Close
the cover.
3. Apply power to the controller.
4. Check the power supply connected to the INT-810 interface module.
a. Connect a DC volt meter set to the 10 VDC scale to terminals 13 and 14 on
the INT-810 interface module. Connect the positive meter lead to terminal
13 and the negative meter lead to terminal 14.
b. The meter should read 5 VDC ±0.25 VDC.
c. If the reading is improper, replace the 5 VDC power supply.
5. Check the encoder pulse channels.
a. Connect a DC volt meter set to the 10 VDC scale to terminals 1 and 2 on the
INT-810 interface module. Connect the positive meter lead to terminal 1 and
the negative meter lead to terminal 2.
b. Move the encoder shaft to find two different voltages. The greater voltage
should be no less than +2.5 VDC. The lesser voltage should be no more
than -2.5 VDC. If the readings are out of specification, replace the encoder.
c. Connect a DC volt meter set to the 10 VDC scale to terminals 4 and 5 on the
INT-810 interface module. Connect the positive meter lead to terminal 4 and
the negative meter lead to terminal 5.
d. Move the encoder shaft to find two different voltages. The greater voltage
should be no less than +2.5 VDC. The lesser voltage should be no more
than -2.5 VDC. If the readings are out of specification, replace the encoder.
e. Connect a DC volt meter set to the 10 VDC scale to terminals 7 and 8 on the
INT-810 interface module. Connect the positive meter lead to terminal 7 and
the negative meter lead to terminal 8.
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