DETAILED OPERATION - Section 4
MTS-1700 SERIES OPERATION AND REFERENCE MANUAL 4-1
CU A002 15A
MANTA TEST SYSTEMS
DETAILED OPERATION
4.1
FAULT STATES
The MTS-1710 operates in one of three fault states indicated by the [FAULT] and [STOP/RESET] button
lights as follows:
.
The prefault state simulates the healthy inputs to the relay prior to the fault occurrence. The fault state
simulates the inputs to the relay during a fault condition. The postfault state simulates the inputs to the relay
after the fault condition and relay operation.
The MTS-1710 can output different voltage and current levels, phase, and frequency in each of the prefault,
fault and postfault states.
4.2
OPERATION MODES
Operation within the three fault states is governed by the selected operation mode, which may be STATIC
or DYNAMIC. Select the operation mode by pressing the [STATIC/DYNAMIC] button.
4.2.1
Static Operation Mode
In the static operation mode (static mode), the outputs are normally in the prefault state.
When a closed contact or voltage is present on the [EXTERNAL START] trigger inputs, or the [FAULT]
button is depressed, the output is in the fault state. This is normally used to initially set fault conditions.
Note that the trigger action (closed contact, voltage, or depressing [FAULT]) must be maintained to hold
the MTS-1710 in the fault state. Transitions between the two states is depicted in the following diagram:
FAULT light
STOP/RESET light
Fault state
off
off
PREFAULT
ON
off
FAULT
off
ON
POSTFAULT
Uses of the STATIC operation mode
Uses of the DYNAMIC operation mode
Pickup checks
Quick go/no-go tests
Adjustments of any settings
“Static” relay testing
All timed tests
Dynamic test
Any test involving ramping and/or duration
Pulsed output (response time) test
Reading hold/freeze
Two-wire pulse timing