Diode replacement – Rockwell Automation 1336R REGEN 78A, 180A DC Bus Fuse Repl. User Manual
Page 2
1336 REGEN 78A and 180A Converter DC Bus Fuse
&
Diode Replacement
2
1336 REGEN-5.15 May, 1998
Plastic
Standoff
Plastic
Standoff
Retaining
Screw
Retaining
Screw
Base Plate
Bus Fuse
Fastened to Bus Bar with
Two Bolts and Washers
Lower Bus Bar
Upper Bus Bar
Diode
Fastened to Bus Bar with
One Screw and Washer
Gate Driver Board
CAT 1336R-VB180CNV-AN-HAP
SER A
118.7-143.7
AC INPUT
K W
VOLTS
A
PH
HZ
AC OUTPUT
DC OUTPUT
REFER TO USER MANUAL FOR
INSTALLATION INSTRUCTIONS
180.4
–
–
–
–
–
3
50/60
380-480
118.7-143.7
195.6
––
607-735
ALLEN-BRADLEY
MADE IN U.S.A.
U
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®
LI
S
TE
D
96
6X
IN
D
C
O
N
T
E
Q
U
L
®
LI
S
TE
D
96
6X
IN
D
C
O
N
T
E
Q
C
®
TE
1
2
3
4
5
DANGER
RISK OF ELECTRICAL
SHOCK.
MORE THAN ONE
DISCONNECT SWITCH
MAY BE REQUIRED TO
DE-ENERGIZE THE
EQUIPMENT BEFORE
SERVICE.
!
DANGER
ELECTRICAL SHOCK
HAZARD FROM ENERGY
STORAGE CAPACITORS.
VERIFY LOW VOLTAGE
DISCHARGE BEFORE
SERVICING.
SEE INSTRUCTION
MANUAL.
!
SEL
ESC
Steps 4 and 5
Step 2
Step 3
78A DC Bus Fuse
&
Diode Replacement
2.
Disconnect leads, unplug connectors
and loosen the (2) retaining screws to
remove the Base Plate.
3.
Disconnect leads, unplug connectors
and loosen the (2) plastic standoffs to
remove the Gate Driver Board.
4.
Remove the open DC bus fuse and diode
even if the diode appears good.
Removing the diode assures that
undetected damage will not cause
failure at a later date.
5.
Install the new DC bus fuse and diode
included with the kit. Torque the fuse
bolts to 11.0-12.5 N-m
(97-111 lb.-in.). Torque the diode screw
to 4 N-m (35.4 lb.-in.).
6.
Reinstall the Converter Base Plate and
Gate Driver Board, reconnecting all
leads and connectors. Reinstall the
Converter front cover.
!
ATTENTION:
Replace any guards or shields
previously removed before reapplying power to the
Converter or 1336 REGEN Line Regeneration
Package. Failure to replace guards or shields may
result in death or serious injury.
1.
Remove and lock-out all incoming power to the 1336 REGEN Line
Regeneration Package.
a.
Remove the Precharge Unit front cover. Measure the voltage at
input power terminals R1–S1–T1 and terminal block TB1 with a
voltmeter to ensure that no voltage is present.
b.
Remove the Converter front cover. Measure the voltage at input
power terminals R2–S2–T2 with a voltmeter to ensure that no
voltage is present.