User guide

13-16
FlexPak 3000 DC Drive Software Reference
13.5 Armature Phase Fire Test
An armature phase fire test mode is available to verify the operation of the S6 or S6R
rectifier bridge. This test should only be performed by qualified personnel. Note that
this test is not available through the
DCM
.
To perform an armature phase fire test:
Step 1. Lockout and tag power as necessary.
Step 2. Turn off power to the drive.
Step 3. Either lock the motor armature to prevent rotation or disconnect the motor
armature leads from the drive and replace with a dummy load.
When locking the motor armature, the motor field winding can be
disconnected to prevent excessive torque. If the motor field winding is
disconnected, jumper J20 should be set to
DISABLE
to inhibit field current
loss faults.
Step 4. Turn on power to the drive. The drive must be stopped and the Drive Ready
Indicator must be
ON
.
Step 5. Set
CONTROL SOURCE SELECT
to
KEYPAD
.
Step 6. On the
OIM
, select Current Minor Loop (
CML
) –
SCR
Diagnostics – Armature
Phase Fire Test.
Step 7. Set
PHASE FIRE TST BRIDGE
(P.310). This parameter must be set to the
appropriate value before activating the armature phase fire test mode.
Step 8. Attach an oscilloscope to the armature current feedback test point (J17+,
J22– on the Regulator board). Note that the CS3000 software oscilloscope
mode does not have sufficient bandwidth for this test.
Step 9. Press . The armature phase fire test mode is now active. The
OIM
Running indicator will be on.
!
ATTENTION:
Only qualified electrical personnel familiar with the
construction and operation of this equipment and the hazards involved
should perform this test. Read and understand this section in its entirety
before proceeding. Failure to observe this precaution could result in
severe bodily injury or loss of life.
ATTENTION:
This is an open loop test. Lock the motor shaft or
disconnect the motor armature leads from the drive and replace them
with a dummy load. Failure to observe this precaution could result in
severe bodily injury or loss of life.
ATTENTION:
If the field is disconnected, the armature must be locked
to prevent rotation. Failure to observe this precaution could result in bodily
injury.
ATTENTION:
This equipment is at line voltage when AC power is
connected to the drive. Disconnect and lock out incoming power to the
drive before proceeding. After power is removed, verify that no voltage
exists at power terminals 181, 182, and 183 before touching any internal
parts of the drive. Failure to observe this precaution could result in severe
bodily injury or loss of life.