West Control Solutions MRC 8000 - Manual (Page 55)

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Test 4 can be used to display the line frequency determined at power-up. With tSt4
displayed, press and hold the DOWN key and then press the UP key. The display will
blank momentarily, then show the line frequency it measured, then blank momentarily,
and then display tSt4. The frequency measured, and displayed may not be exactly 50
or 60, but the software will assume it is 50 or 60 during normal operation.
5.5.5 TEST 5 KEYPAD/DISPLAY TEST
This test allows the operator to verify that the keys work and that all display elements can be
lighted. No special test equipment is required.
With tSt5 displayed, press and hold the DOWN key, then press the SCROLL key and then
release both keys. The display will go blank. The following code will be displayed while the
corresponding key is pressed:
Key Display
SCROLL SCrL
UP uAro
DOWN dAro
RESET (upper) Autu
RESET (lower) AutL
AUTO/MAN (Pen 1) Autu
AUTO/MAN (Pen 2) AutL
UP and DOWN (All LED’s and segments lit)
SCROLL and UP (exit)
To exit, press the SCROLL and UP keys simultaneously, tSt5 will be displayed.
5.5.6 TEST 6 RELAY/ SOLID STATE RELAY DRIVER OUTPUT TEST
Allows the operator to verify that the Relay and /or the Solid State Relay Driver output(s) are
working. A volt/ohm meter will be required to test the output.
With tSt6 displayed, press and hold the DOWN key, then press the SCROLL key. oFF will be
displayed. For SPST Relay outputs, connect the meter across the relay output in the ohm
scale. The meter should read continuity with the relay On and infinity when the relay is Off.
For SSR Driver outputs, connect the meter across the output in the Volt DC scale. The meter
should read 5 VDC when the SSR driver is On and 0 VDC when the driver is Off. Press and
release the DOWN key to advance through the following sequence:
RELAY ON
DISPLAY SPST
rLYA A
rLYb B
rLYC C
rLYd D
oFF None
To exit, press the SCROLL key and tSt6 will be displayed. The existence of Relay and
Solid State Relay Driver output(s) is dependent upon the hardware configuration.
5.5.7 TEST 7 CURRENT OUTPUT TEST
This test allows the operator to verify that the current output(s) are functioning properly or will
allow the selection of an output value for testing of associated equipment. A milliamp meter is
required for testing.
With tSt7 displayed press and hold the DOWN key, then press the SCROLL key. The display
will indicate CurA, for the first current output. By pressing the DOWN key, the instrument will
advance through the selection sequence of Curb and then back to CurA. Choose the desired
output to be tested and connect the milliamp meter across the output terminals being tested.
Be sure to observe the proper polarity when connecting the meter. Terminal 1 is positive and