OPERATION SUMMARY - Section 3
3-8 MTS-1700 SERIES OPERATION AND REFERENCE MANUAL
MANTA TEST SYSTEMS
CU A002 15A
3.3.2 Safety & other precautions
3.3.2.1 SAFETY
•
The AC yellow LED under the AC voltage output terminals indicates when AC voltage is potentially
live (not present on older models).
•
Whenever any of the red [PREFAULT], [FAULT] or [POSTFAULT] lights are lit, there are potentially
live AC outputs.
•
The DC voltage output may be live at all times. This is indicated by the LED beside the DC voltage
output terminals (not present on older units).
3.3.2.2 ISOLATION
•
All outputs are isolated from the AC input supply and case/earth ground to a maximum of 300 VAC/
DC.
•
The start & stop trigger inputs are isolated from each other, from the AC input supply, from the AC/DC
outputs, and from the case/earth ground.
•
The AC current and voltage outputs share a common return/ground.
3.3.2.3 PROTECTION
•
The AC voltage output is protected from short circuits, overloads and overtemperature.
•
The AC current output is protected from open circuits, overloads and overtemperature.
3.3.2.4 PRECAUTIONS
•
DON'T CHANGE CONNECTIONS WHILE OUTPUTS ENERGIZED! Turn outputs off,
and make current and voltage connection changes before changing current modes.
•
DON'T CLOSE A CURRENT CIRCUIT WHILE OUTPUTS ARE ENERGIZED!
•
DON’T ATTEMPT TO PARALLEL CURRENT OUTPUTS UNLESS THE CURRENT
MODE KNOB HAS A I3P POSITION (AVAILABLE ONLY ON NEWER MODELS).
•
IN 3-PHASE CURRENT CONNECTIONS (I3-WYE CURRENT MODE), THERE MUST
BE A NEUTRAL RETURN PATH FOR EACH OUTPUT (A, B, C)!!
3.3.3 Making Basic Adjustments
Three steps are involved in making basic adjustments:
1. Select the parameter to be adjusted ([VOLTAGE], [CURRENT], [PHASE] or [FREQ]).
The selected parameter will be displayed on the [VALUE DISPLAY], and the appropriate units will
be displayed on the lower [MODE/MENU DISPLAY].
2. Put the MTS-1710 into the appropriate fault state (PREFAULT, FAULT or POSTFAULT) to adjust the
desired setting.
3. Turn the [MODIFY] knob to change the setting to the desired value. Note that the [MODIFY] knob
sensitivity depends upon the speed at which it’s turned. Turning the knob slowly makes fine
adjustments. Turning the knob at a moderate speed--and very fast--makes medium and coarse
adjustments respectively.
