OPERATION SUMMARY - Section 3
MTS-3000 SERIES OPERATION AND REFERENCE MANUAL 3-31
CU M004 01A
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2.
Select the A phase of the voltage output module by pressing the F1 key on the module. Its LED will
come on and a cursor will flash slowly beneath the ‘V’ representing Volts in the F1 line of the
module’s display.
3.
Enter the nominal voltage value required via the MODIFY keyboard or rotary knob.
4.
The default frequency is displayed on the F2 line of the Control Module display. Press the F2 button to
select variable frequency mode, indicated by illumination of the F2 indicator LED and the text of the
display changing from "Freq:" to "Frq1". Enter the desired initial frequency via the MODIFY
keyboard or rotary knob.
5.
With the F2 LED on the CM lit, press F1 on the voltage module to select that channel for FRQ1
frequency. Note that the ACVs’ F1 indicator LED flashes slowly to indicate that VA is now generating
the FRQ1 frequency. All other channels (non-flashing channels) remain at the mains frequency.
6.
Enable the outputs by pressing ENABLE. Press and hold FAULT. Press F2 on the Control Module to
enable frequency adjust mode, and rotate the MODIFY knob clockwise (overfrequency) or
counterclockwise (underfrequency) until the relay begins to operate. The LED indicator on INPUT 1
of the DIGITAL I/O module will light, and the audible tone, if enabled via the tone switch, will sound.
The frequency may be adjusted up or down via the MODIFY knob to verify the pickup level.
7.
Release the FAULT button when the test is complete.
3.3.12.3 TIMING TEST.
1.
If you haven’t done so, perform the above steps of the pickup test. Leave the fault frequency at the
pickup value at which it’s desired to perform timing checks.
2.
If it’s desired to start the timing test from a frequency other than mains frequency, it’s necessary to
program an alternate prefault frequency. To do this, disable the outputs, if necessary, by pressing
ENABLE until its LED is out, and then press PREFAULT. Its LED should come on. Press F2 to select
frequency 1 adjust mode for the PREFAULT state. Note that the output channel select LED F1 of the
AC voltage module flashes to indicate that the frequency of VA is being changed. Enter the desired
prefault frequency via the MODIFY keyboard or rotary knob.
3.
Enable the outputs by pressing ENABLE, and press PREFAULT. Press FAULT momentarily, and
release it. The Fault frequency will seal in and stay on until the relay operates. At that time, the FAULT
LED will stop its slow flashing, the TRIP LED will light, the output voltage will trip off, and the timer
and all current, voltage, and phase readings will be frozen.
4.
Record the voltage and timer readings, and press RESET to restore the system to Prefault mode.
5.
Repeat Steps 1 through 5, as required, for each new frequency value.
3.3.12.4 TARGET/SEAL-IN TEST.
If the relay under test has a DC current-operated target, the sensing leads from INPUT 1 must be connected
to the contact output terminals of the relay which contain the target element. Note that the DC current is an
optional feature of the DIGITAL I/O module.
Содержание MTS-3000 Series
Страница 12: ...TABLE OF CONTENTS xii MTS 3000 SERIES OPERATION AND REFERENCE MANUAL 0 17 7 67 6 67 06 CU M004 01A ...
Страница 64: ...OPERATION SUMMARY Section 3 3 44 MTS 3000 SERIES OPERATION AND REFERENCE MANUAL 0 17 7 67 6 67 06 CU M004 01A ...
Страница 114: ...QUICKTEST Section 6 6 20 MTS 1700 SERIES OPERATION AND REFERENCE MANUAL 0 17 7 67 6 67 06 CU M004 01A ...
Страница 132: ...RS 232C INTERFACE Section 7 7 18 MTS 3000 SERIES OPERATION AND REFERENCE MANUAL 0 17 7 67 6 67 06 CU M004 01A ...
Страница 152: ...GLOSSARY D 4 MTS 3000 SERIES OPERATION AND REFERENCE MANUAL 0 17 7 67 6 67 06 CU M004 01A ...
Страница 156: ...INDEX E 4 MTS 3000SERIESOPERATIONANDREFERENCE MANUAL 0 17 7 67 6 67 06 CU M004 01A ...