Rockwell Automation 1398-DDM-xxx USE MNL/ULTRA 200 DIG.SERVO.DR - Manual (Page 201)

Publication 1398-5.0 – October 1998
Maintenance and Troubleshooting 11-13
B. Brake Enable box, then measure the resistance between J1-49
and J1-50.
(a) If the box is checked, the resistance should read
approximately 1Ohm.
(b) If the box is not checked, the resistance should be very
high (> 1 MOhm).
A load is necessary to test the transistor outputs listed below.
A 1 kOhm resistor may be connected from the transistor
output (J1-42, J1-43, J1-44 or J1-45) to the 24 VCOM (J1-6).
C. Digital Output 1, then measure the voltage between J1-42 and
J1-13.
(a) If the box is checked, the voltmeter should read
approximately +24 VDC.
(b) If the box is not checked, the voltmeter should read
approximately 0 VDC.
D. Digital Output 2, then measure the voltage between J1-43 and
J1-13.
(a) If the box is checked, the voltmeter should read
approximately +24 VDC.
(b) If the box is not checked, the voltmeter should read
approximately 0 VDC.
E. Digital Output 3, then measure the voltage between J1-44 and
J1-13.
(a) If the box is checked, the voltmeter should read
approximately +24 VDC.
(b) If the box is not checked, the voltmeter should read
approximately 0 VDC.
F. Digital Output 4, then measure the voltage between J1-45 and
J1-13.
(a) If the box is checked, the voltmeter should read
approximately +24 VDC.
(b) If the box is not checked, the voltmeter should read
approximately 0 VDC.
4. After the test has been completed you may select Close to exit
Output Diagnostics window.
If you determine that a digital output is defective, return the unit for
repair.