Miller Electric OM-842 - Manuel (Page 50)

OM-842 Page 46
7. If the Decrease push button is not pressed in time, or if
the Decrease push button is not working correctly, the
display shows:
B U T T O N I S N O T
W O R K I N G P R O P E R L Y
If the Decrease push button is not working correctly, re-
place the push button.
8. When the Decrease push button tests okay, press Pa-
rameter Select. The display shows:
P U S H S T O P B U T T O N
O N R E M O T E
9. When this display appears, the control unit waits three
seconds for the Stop push button to be pressed. If this
is done in time and the push button is working correctly,
the display shows:
B U T T O N I S
W O R K I N G P R O P E R L Y
If the Stop push button tests okay, go to Step 11.
10. If the Stop push button is not pressed in time, or if the
push button is not working correctly, the display shows:
B U T T O N I S N O T
W O R K I N G P R O P E R L Y
If the Stop push button is not working correctly, replace
the push button.
11. When the Stop push button tests okay, press Parame-
ter Select to exit the Remote Pendant tests. Use the
Right/Increase or Left/Decrease push button to access
another test, or stop the diagnostics program.
O. Current Detect Test
This procedure tests the operation of the circuitry that detects
output current flow.
1. When the repeating test displays are shown (see Sec-
tion 7-2C), press Right/Increase or Left/Decrease until
the display shows:
C U R R E N T D E T E C T
T E S T
2. Press Parameter Select. The display scrolls through
the following two displays:
P U T S H O R T C I R C U I T
O N O U T P U T S T U D S
R I G H T / I N C T O
C O N T I N U E T H I S T E S T
3. Connect a suitable cable across the output terminals.
The microprocessor control sends a reference current
through the cable when Right/Increase is pressed.
4. Press Right/Increase. If the current detect circuitry is
working correctly, the display shows:
C U R R E N T D E T E C T I S
W O R K I N G P R O P E R L Y
If the current detect circuitry tests okay, go to Step 6.
5. If the current detect circuitry is not working correctly, the
display shows:
C U R R E N T D E T E C T I S
N O T W O R K I N G P R O P E R L Y
If the current detect circuitry is not working correctly,
contact the nearest Factory Authorized Service
Station/Service Distributor.
6. When the current detect circuitry tests okay, press Pa-
rameter Select to exit the test. Use the Right/Increase
or Left/Decrease push button to access another test, or
stop the diagnostics program.
P. Input Contactor Test
This procedure tests the circuitry that detects an input contac-
tor closure.
1. When the repeating test displays are shown (see Sec-
tion 7-2C), press Right/Increase or Left/Decrease until
the display shows:
I N P U T C O N T A C T O R
T E S T
2. Press Parameter Select to begin the test. The display
shows:
P R O V I D E A C L O S U R E
O N R C 3 P I N S A T O B