Section 5 — Maintenance and Troubleshooting
31
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Replace the hazardous-area connector.
5.2.1
Bench Testing Isolators
Test potentially faulty modules in workshop conditions using the installation
instructions in "Installing the Hardware". Test the suspected module using the
following procedure:
1. Connect a power supply to a spare backplane.
2. Plug the suspect module into any position on the backplane.
3. Wire the module as shown.
R1
= 1000
Ω
V1
= Digital Voltage
Meter
Vin
= Function
Generator
Vo
= Digital Voltage
Meter
Vs +
= +20 to +35 Vdc
Vs -
= Common
4. Set the input to the module to
the following:
Vin
= 0.707 Vrms @
100 Hz
-6.0 Vdc offset
5. Verify that the output is as
follows:
V1
!
-19.0 Vdc
Vo
= 0.707
!
0.035 Vrms
@ 100 Hz -5.9 to -6.1 Vdc
