Rockwell Automation 34C473 User Manual
INSTRUCTION SHEET
DĆ3894Ć1
Dynamic Braking Kit
Model 34C473
For use with 5, 7Ć1/2 and 10 HP
General Purpose AĆC VKSR Drives
ThreeĆPhase Input
Before installing and/or adjusting this kit, the quali
fied electrical maintenance person who is familiar
with
this type of equipment and the hazards involved
should read this entire instruction sheet.
DESCRIPTION
The Reliance Electric Dynamic Braking (DB) Kit is deĆ
signed
and/or
to provide rapid
enable the AĆC V
150% intermittent braking to the motor. The kit dissiĆ
in the form of heat, the power regenerated by the
pates,
motor during deceleration or intermittent overhauling
The power is dissipated by resistors mounted in
loads.
the NEMA 1 side (right side) of the AĆC VKS Drive Con
cabinet.
troller
This kit also provides adjustable motoring and regenĆ
erative current limit circuitry. The adjustment range of
the motoring current control is approximately 40 to
of the drive controller fullĆload current (not of the
150%
motor
fullĆload current rating). The adjustment range of
the
regeneration current control is approximately 80 to
150% of the drive controller fullload current (not of the
motor fullĆload current rating). The use of this kit does
not affect the operation of the drive's instantaneous
electronic
trip current protection.
deceleration of the drive motor
KSR
Drive Controller to provide
Ć
The following are design specifications for this kit:
DB Resistor rating: 500 watts
2
WR
=
3: 6 starts/stops per minute from 1800 RPM
2
WR
=
6: 3 starts/stops per minute from 1800 RPM
KIT CONTENTS
Qty. Description Part
1
DB
Resistor Assembly
DB Base Driver Assembly
1
W
1
1
1
Ć
2
2
4
2
2
ire Harness
W
ire Harness
W
ire Harness
Gasket
eps Nut
K
#10Ć32 x 3/8 T
#10 Internal T
Lock W
asher
aptite Screw
ooth
#10Ć32 x 3/8 Round Head
Machine Screw
CLSA Board
1
DB BASE DRIVER
ASSEMBLY
Number
801450Ć3R
77596Ć88R
705337Ć21R
608808Ć63TD
608808Ć63TC
417194Ć12C
401599Ć11E
601741Ć63B
601748Ć4J
601742Ć6E
0Ć52862
DB RESISTOR
ASSEMBLY
CAUTION:
set
below a particular motor's
Should the regenerative
minimum current lev
current limit be
el, the regenerative current limit circuitry may proĆ
the motor
hibit
from decelerating. Reset the regen
erative current limit as described under ADJUSTĆ
MENTS"
CAUTION: DO
DB
bly
age
ate
in this instruction sheet.
NOT
operate the controller with
Resistor Assembly and DB
Base Driver Assem
the
connected and the CLSA Board removed. Dam
to equipment will occur
. If it is desired to oper
the controller without dynamic braking, removal
of the threeĆpin plug (wire harness 608808Ć63TD)
from the DB Base Driver Assembly PC Board will
disable
The
diode
ing
At
high rates of deceleration, the LED will appear to be
ON
this kit.
DB Base Driver PC Board includes a light emitting
(LED) that indicates dynamic braking action. Dur
normal deceleration, the LED will cycle ON and OFF
continuously
.
Ć
Ć
Ć
Ć
Ć
CLSA BOARD
Ć
.
Figure 1. Kit contents.
INSTALLATION
1. Disconnect
ler.
EQUIPMENT IS AT LINE VOLTAGE WHEN AĆC
POWER IS CONNECTED TO THE AĆC VKS
DRIVE CONTROLLER. ALL UNGROUNDED
CONDUCTORS
BE
DISCONNECTED FROM THE
BEFORE IT IS SAFE TO TOUCH ANY INTERNAL
PARTS
REMOVED, USE A VOLTMETER TO VERIFY
THAT THE DĆC BUS FILTER CAPACITORS ARE
DISCHARGED BEFORE TOUCHING ANY INĆ
TERNAL
all power to the AĆC VKS Drive Control
DANGER
OF THE AĆC POWER LINE
CONTROLLER
OF
THIS EQUIPMENT
P
ARTS OF THE CONTROLLER.
. AF
TER POWER IS
MUST
2. Using an 11/32'' wrench, remove the lower cover
plate and gasket from the vertical barrier on the
1 side (Figure 2). Discard the gasket.
Ć
NEMA
NOTE: This cover plate and gasket are behind the
Variable
oltage D
ĆC Supply (S
Ć3 Assembly). At the
V
user's discretion, the Variable Voltage DĆC Supply
can be removed to gain access to this area.
3. Install
over the studs on the vertical barrier the two
supplied gaskets (part 417194Ć12C).
4. ReĆinstall
the cover
plate with hardware removed in
Step 2.
5. Install the nonĆlugged ends of wire harness pair)
705337Ć21R (the only harness not of twisted pair)
thru the gasket and cover plate from the NEMA 12
side
(left side) by pushing lead 47 thru the top hole
in the gasket and lead 48 thru the bottom hole.
two leads will be connected later in this pro
These
Ć
cedure.
CAPACITOR
COVER REMOVED
CAPACITOR
TERMINALS
NEMA 12
NEMA 1
WIRE HARNESS
705337Ć21R
DB RESISTOR
ASSEMBLY
TAPTITE
SCREW
DB BASE DRIVER
Figure 2. Initial installation details.
ASSEMBLY
STUD WITH
KEPS NUT
VERTICAL
BARRIER
COVER PLATE
AND GASKET
VARIABLE
VOLTAGE
DĆC SUPPLY
6. Remove
itor
the filter capacitor cover and locate
capac
terminals 145 (bottom left) and 47 (bottom right)
(Figure 2).
7. Remove the #10 screws from capacitor terminals
and 47. Connect leads 145 and 47
145
of wire har
ness part 705337Ć21R to capacitor terminals 145
and
47, respectively
8.
ReĆinstall the filter capacitor cover
. Reinstall the #10 screws.
.
9. Locate the four preĆdrilled holes in the back of the
1 side (right side)
NEMA
of the enclosure. Start the
four supplied #10Ć32 x 3/8'' taptite screws into
holes but do not tighten fully (Figure 2).
these
10. Position the keyhole slots of the DB Resistor AsĆ
sembly (part 801450Ć3R) over the taptite screws.
Tighten
11. Connect
er
nals
sembly
12. Connect
all four screws.
the leads pushed thru the gasket and
plate in Step 5. Connect leads
47 and
48, respectively
47 and 48 to termi
, on the DB Resistor As
(Figure 2).
one end of wire harness part 60880863T
cov
(the single orange and black twisted pair) to the
SNUBBER
ON" connections on
the regulator mo
therboard (Figure 3). Polarity is Important. The
orange
lead connects to the plus (+)
and the black
Ć
lead
connects
to the minus (-). Let the other end of
the harness rest along the enclosure floor unconĆ
nected
13. Locate
Ć
side (left side) of the enclosure (Figure 2). W
until connection later in this procedure.
the studs in
the lower back of the NEMA 12
ith the
PC board on the left, position the Base Driver AsĆ
sembly
provided
bly
(part 77596Ć88R) over the studs. Using the
keps nuts,
install the Base Driver Assem
on the studs.
Ć
14. Remove the phase module cover (Figure 4).
Connect
SNUBBER ON"
CONNECTION
one end of wire harness part 608808Ć63TD
MOTHERBOARD
(+) ORANGE
(-) BLACK
Ć
Ć
Ć
C
Ć
PSPC BOARD ON
RIGHT SIDE OF
REGULATOR
Figure 3. Location of SNUBBER ON" connections
on motherboard.
PHASE
MODULE
COVER
VSAA BOARD
DB RESISTOR
ASSEMBLY
DB BASE DRIVER
ASSEMBLY
CLSA BOARD
Figure 4. Dynamic Braking Kit installed.
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