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Maintenance
3500/42 Operation and Maintenance
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3. Adjust the power supply to produce a voltage equal to -18.00 Vdc on the Gap
bar graph display. Verify that the Gap bar graph display and the Current
Value Box is reading ±1 % of -18.00 Vdc. If the recorder output is configured,
refer to Section 5.1.10 (Verify Recorder Outputs) for steps to verify the
recorder output.
4. Adjust the power supply to produce a voltage equal to the mid-scale on the
Gap bar graph display. Verify that the Gap bar graph display and current
value box is reading ±1 % of the mid-scale value. 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 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.
Direct
Note
The Keyphasor must be triggering and have a valid rpm value to check this
parameter.
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 5.1.7.1
(Test Equipment and Software Setup - Eccentricity).
3. Calculate the full-scale and bottom-scale values. These values can be
calculated in the following way:
Full / Bottom Scale Value =
Zero Position Voltage ± (Transducer Scale Factor
×
Scale Range)
Note
The Zero Position Voltage is the voltage input that will cause the reading on
the bar graph display and the Current Value Box to be zero. The Zero Position
Volts value is displayed in the Z.P. Volts box above each channel value bar
graph.
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