Maintenance
3500/42 Operation and Maintenance
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4. Set the Keyphasor multiplier/divider so that the multiply setting is set to one
and the divide setting is set to one. Adjust the function generator amplitude
for full scale. Verify that the S
max
bar graph display and Current Value Box is
reading ±1 % of full scale. If the recorder output is configured, refer to
Section 5.1.10 (Verify Recorder Outputs) for steps to verify the recorder
output.
5. If the reading does not meet specifications, check that the input signal is
correct. If the monitor still does not meet specifications or fails any other part
of this test, go to Section 5.1.11 (If a Channel Fails a Verification Test).
6. Disconnect the test equipment and reconnect the PWR, COM, and SIG field
wiring to the channel pair terminals on the I/O module. Verify that the OK
LED comes on and the OK relay energizes. Press the RESET switch on the
Rack Interface Module (RIM) to reset the OK LED.
7. Repeat steps 1 through 6 for all configured channels.
5.1.5.4
Test OK Limits
The general approach for testing OK limits is to input a DC voltage and adjust it
above the Upper OK limit and below the Lower OK limit. This will cause a
channel not OK condition and the OK Relay to change state (de-energize). The
Upper and Lower OK limits are displayed in the Verification screen on the test
computer.
1. Disconnect PWR, COM, and SIG field wiring from the channel terminals on
the I/O module.
2. Connect test equipment and run software as described in Section 5.1.5.1
(Test Equipment and Software Setup - Radial Vibration).
3. Bypass all other configured channels.
4. Adjust the power supply voltage to -7.00 Vdc.
5. Press the RESET switch on the Rack Interface Module (RIM). Verify that the
monitor OK LED is on and that the Channel OK State line in the Channel
Status box of the Verification screen reads OK.
Note
If the Danger Bypass has been activated, then the BYPASS LED will be on.
All other channels in the rack must be OK or bypassed for the relay to be
energized.
6. Verify that the OK relay on the Rack Interface I/O Module indicates OK
(energized). See 3500/20 Rack Interface Module Operation and
Maintenance Manual, part number 129768-01.
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