Reliance electric MinPak Plus, Инструкция по эксплуатации

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TABLE 5.A - TROUBLESHOOTING SUGGESTIONS FOR THE
THREE PHASE MINPAK PLUS CONTROLLER
Symptom Probable Cause Recommended Procedures
1. POWER ON/OFF
circuit breaker
trips or fuses clear
when power is apĆ
plied.
Incorrect wiring conĆ
nections to controller;
from controller to moĆ
tor; in motor.
Remove aĆc power at the disconnect.
Remove leads to L1, L2, L3, A1, A2 and F1, F2, on incoming side of controller's
respective location.
Open the power disconnect switch.
Check for a ground condition at 51, 52, 53, A1, A2, F1 and F2. Do this internal to
controller. If a ground is discovered, check wiring connections on Power Cube and
motor field terminals F1 and F2.
If no ground exists, examine the controller chassis for loose wires and/or foreign
objects.
If no ground exists and if no foreign objects are discovered, reconnect the incoming
conductors A1, A2 and F1 and F2. Then check for grounds at these terminals.
If a ground is found, it is in the conductors to the motor or in the motor itself.
Disconnect the motor from the conductors at the drive motor.
Test A1, A2, F1 and F2 conductors for a ground. (If one exists, examine connections
and insulation for areas where shorts could occur.)
If no grounds are found in the conductors, check the motor for a ground condition. If
a ground is located here, examine and/or replace the motor, as necessary.
Short in Power Cube. Replace Power Cube.
Short in Field Supply. Replace Field Supply.
2. Drive motor does
not start.
Main aĆc line disconĆ
nect not closed; or
fuse blown; or no
power applied ahead
of disconnect.
Check disconnect switch, fuses in it, and voltage on line.
Drive interlocks preĆ
venting operation. 32
to 33 on TB
Verify that all userĆinstalled interlocks are in a state (physical condition and wiring
connections) to allow a start.
Drive motor thermoĆ
stat wires not conĆ
nected on MinPak
Plus controller termiĆ
nals 34 and 132 on
TB.
Check connections to thermostat: at drive motor P1, P2; at controller 34, 132.
Check for open thermostat inside motor. Make a resistance check of thermostat. (It
should read a short, or low resistance, if it is closed.
External overload
wires not connected
on MinPak Plus conĆ
troller terminals 34
and 33 on TB.
Check connections to external overload. (Blower Motor Starter O/L)
Check for open overload, Make a resistance check to overload. (It should read a
short, or low resistance, if it is closed.)
Drive thermostat wires
not connected on
MinPak Plus controller
terminals 132 to 232
Check connections to thermostat at drive power bridge heat sink, at controller 132 or
232.
Check for open thermostat. Make a resistance check to the thermostat. (It should
read a short, or low resistance, if it is closed.
3. Remote or Local
Operator Control
Station functions
not operating.
Malfunctioning
switches.
Check START/STOP switch, but first remove aĆc line power at main disconnect.
Connect ohmmeter to terminal 32 (red) pin on the switch. (Note numbers here refer to
numbers noted on Remote Station wiring diagram at Figure 3.8.
Touch probe to wire 38 (brown) pin on the switch.
Place switch in the START (closed) position,
If the switch is property functioning, a short will be seen on the meter.
Check the STOP function. Place the RUN/JOG switch in the RUN position. Connect
the ohmmeter to terminals 32 (red) and 35 (orange). Place the switch in the STOP
position, which should open it if it is functioning correctly. If there is a short, it will be
seen on the meter. If there is no short, the circuit is opened, and the switch is
functioning correctly.
Using similar techniques, test the RUN/JOG switch. The pins are 35 (orange) and 32
(red). When the switch is in the RUN position, a short should be read.
Improper wiring conĆ
nections.
For a Remote Operator Control Station, compare actual wiring with Figure 3.4. A
Local Operator Control Station uses 2 cable harnesses, so wiring should not be a
problem. However, check the pin connectors on the Regulator Module for proper
fitting.
DANGER
IF CIRCUIT BREAKER HAS TRIPPED OR FUSES HAVE CLEARED,THE FIELD
SUPPLY AND ITS WIRING MUST BE INSPECTED FOR DAMAGE. AFTER
REĆAPPLYING POWER TO THE DRIVE, THE FIELD VOLTAGE MUST BE
REĆCHECKED FOR PROPER VOLTAGE AT MOTOR TERMINALS F1, F2. IF
THIS VOLTAGE IS BELOW 90% OF THE FIELD VOLTAGE SPECIFIED ON THE
MOTOR NAMEPLATE, THE DRIVE MUST NOT BE STARTED UNTIL PROPER
VOLTAGE IS OBTAINED. FAILURE TO FOLLOW THIS PROCEDURE COULD
RESULT IN OVERSPEEDING THE MOTOR AND/OR THE MACHINERY
COUPLED TO THE MOTOR SHAFT AND POSSIBLE FATAL INJURY.