OPERATION SUMMARY - Section 3
MTS-3000 SERIES OPERATION AND REFERENCE MANUAL 3-43
CU M004 01A
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3.
Press the DC Volts ON switch to turn on the output voltage, and turn the MODIFY knob to slowly
raise the voltage until the relay operates (or drops out for an undervoltage element). The INPUT 1 LED
will show the status of the relay contact.
3.3.17.2 TIMING TEST.
FIGURE 3.25 DC RELAY TIMING TEST
1.
Ensure the DC voltage output is selected to OFF before connecting the relay, as shown. Press the ON
switch on the DC Volts module, if necessary, until the status LED above it is extinguished.
2.
INPUT 2 must be configured for TIMER START mode. Press SET on the DIGITAL I/O module, then
select | Inputs | I/P Channel 2..| TIMER START. Press SET again to exit the menu system.
3.
Set the DC voltage to the desired operate point. Press SET on the DC Voltage module, and adjust the
DC voltage level, as required, with MODIFY. Press SET again to exit the dcv menu. Press the DC
Volts ON button to turn on the DC output voltage.
4.
Press Enable until its LED is on. Press FAULT momentarily. This will cause the output relay contact to
close and simultanneously apply DC voltage to the relay under test, as well as INPUT #2 on the
DIGITAL I/O module. The presence of voltage on INPUT #2 will start the timer. The Timer will stop
when the relay operates. Record the timer reading.