P
AGE
39
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:
Display
Relay ON SPST
RELAY ON SPDT
rLYA
A
A
rLYb
B
B
rLYC
C
C
rLYd
D
D
rLYE
E
None
rLYF
F
None
rLYg
G
G
rLYH
H
H
oFF
None
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 indiicate
CurA
, for the first current output. By pressing the DOWN key, the
instrument will advance through the selection sequence of
Curb
,
CurC
,
Curd
, 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 terminal 2 is negative. Press the SCROLL key and the
display will indicate 4 milliamps.
Use the UP and/or DOWN key to increase or decrease the current output in 1 mADC steps
from 0 to 20mADC. The current output reading should be
±
0.5 mADC at any output value.
A
±
5% of span adjustment for the current output(s) is provided by using the potentiometer
adjacent to the current output on the Current Output board. See Appendix A-3 (page 51). To
exit the test, press the SCROLL key and
tSt7
will be displayed. The existence of a mADC
current output is dependent upon the hardware configuration.
5.5.8 TEST 8 PEN/CHART MOTOR TEST
This test allows the operator to verify that pen and chart motors are functioning properly. No
special test equipment is required.
With
tSt8
displayed, press and hold the DOWN key, then press the SCROLL key. The
display will show
ALL
while the test is in progress. This test functions automatically. The
chart speed will be at maximum, 72 seconds per revolution. Starting at the current pen
position, pen 1 will move (sweep) upscale for about 5 seconds, then downscale for about 5
seconds. Pen 2 (if provided) will sweep in the opposite direction. The pens will continue to
cycle until the test is exited. To exit, press the SCROLL key. The display will show
tSt8
.
5.5.9 TEST 9 AUXILIARY INPUT TEST
This test allows the operator to verify that the auxilliary input(s) are functioning properly. With
tSt9
displayed, press and hold the DOWN key, then press the SCROLL key. The display will
show
Ai1
, Auxiliary Input 1. By pressing the DOWN key the instrument will alternate between
Ai1
and
Ai2
. With the desired input selected, press the SCROLL key. The corresponding
value will be displayed. To terminate a particular test, press the SCROLL key. The display
will show
tSt9
.
Содержание MRC 7800
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