Reliance electric MinPak Plus, Инструкция по эксплуатации

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TABLE 5.A - TROUBLESHOOTING SUGGESTIONS FOR THE
THREE PHASE MINPAK PLUS CONTROLLER (Continued)
Symptom Probable Cause Recommended Procedures
4. In nonĆreversing
controllers only . .
Controller's M
contactor not
picking up when
START switch is
pressed (closed).
Faulty M contactor Open the power disconnect switch.
Examine M contactor for firm seating.
On the M contactor, connect an ohmmeter on 139 and 39 wires.
The reading should be 150 to 1000 ohms.
If these readings cannot be obtained, replace the M contactor. (Refer to Table 6.A.)
pressed (closed).
Faulty START/
STOP Switch
Check START/STOP switch, but first remove aĆc line power at main disconnect
Connect ohmmeter to pin 32 for Local Operators station or terminal 32 on the remote
operator adapter.
Place switch in START position. If functioning correctly a short will be indicated on the
meter.
Place RUN/JOG in RUN position connect ohmmeter to terminals or pins 32 & 35
respectively.
Place switch in STOP position, which should open if functioning correctly.
5. In reversing conĆ
trollers only . . .
Controller's M
contactor not
picking up when
FORWARD/REVERSE
switch malfunction.
Examine Remote or Local Operator on Regulator Module for firm seating and proper
wiring and pin connections.
Test FORWARD/REVERSE switch. Use basic technique outlined above for the
START/STOP switch.
picking up when
Start switch is
pressed (closed).
M contactor
malfunctioning.
On the Auxiliary M pins located on the Regulator Module, connect an ohmmeter.
Place it on the pin 39 and pin 67.
Place the FORWARD/REVERSE switch in the FORWARD position. The reading should
be approximately 150 to 1000 ohms if it is operating properly.
Without changing test points, place the switch in the REVERSE position. The reading
should be about 150 to 1000 ohms if it is operating properly. If a short is observed,
remove jumper J9 and repeat the test.
If a 150 to 1000 ohms resistance reading cannot be obtained when the switches are
open, the M contactor is malfunctioning and must be replaced.
6. M contactor picks
up but remains in
only when START
RUN/JOG switch is in
JOG position.
Place the RUN/JOG switch in the RUN position.
only when START
pushbutton is
pressed and held
in.
CR relay not picking
up.
Connect a voltĆohmmeter on the Remote Operator Adapter if used. Place it on
terminal 35 for both remote & local control.
Connect the second probe to connection 139 connected to the MinPak Plus M
contactor.
The reading should be +24 VDC for normal operation.
Next, shift the probe from terminal 35 to terminal 38 on the same terminal board.
However, leave the second probe where it is.
Press the START switch, The reading should be approximately 24 VDC for normal
operation.
Press the START/STOP switch to STOP, and then START. A 24 VDC (approximately)
reading should continue to appear. If it does not, the CR relay is not picking up. In this
case, replace the Regulator Module.
7. Drive motor does
not run, but M
contactor and CR
pull up.
(Use this proceĆ
dure only if conĆ
troller does not
have optional Test
Meter Adapter
Kit.)
No input signal from
SPEED potentiometer
on Control Station.
If the controller does not have an optional AUTO/MANUAL switch, inspect the
Regulator Module to determine that jumper J4 i s In place . (The jumper is removed
when the AUTO/ MANUAL switch is installed.)
Check the SPEED potentiometer on the Control Station. First, open the power
disconnect switch.
Connect a voltĆohmmeter to the Regulator Module Remote Operator Adapter inputs, if
used.
Connect one lead to terminal 28. Connect the other to terminal 20. (Refer to Figure
3.4 for a Remote Station,)
For proper operation, the reading should be 5K ohms,
Disconnect the VOM lead from terminal 20. Connect it to terminal 426.
Turn the SPEED potentiometer from 10 to 0. The resistance should vary from 5K to 0
ohms. If it does not, replace the potentiometer.