Rockwell Automation FlexPak Plus DB Kit 14C630,-C644, C420-434 - Manual

1
INSTRUCTION MANUAL DĆ3957
ACCESSORY
DYNAMIC BRAKING KIT
MODEL NUMBERS 14C630Ć14C644, 14C420Ć14C434
ASSEMBLY DRAWINGS 801455Ć4
The equipment described below should be installed only by qualified electrical maintenance personnel
familiar with the construction and operation of the equipment and the hazards involved.
DESCRIPTION
The standard three phase FlexPak Plus and MinPak
Plus controllers allow a drive motor to coast to rest after
the stop switch is pressed. Optionally, a user may install
a Dynamic Braking kit. (Refer to Figure 1 and Figure 2)
Dynamic Braking is not a mechanical holding brake. It
will not hold the shaft in place nor will it prevent the moĆ
tor from turning once motion has stopped.
Figure 1 - Three Phase MinPak Plus
Dynamic Braking Kit
SPECIFICATIONS
Figure 2 -Three Phase FlexPak Plus
Dynamic Braking Kit
The Dynamic Braking option is actually a resistor conĆ
nected across the motor armature. It al lows a motor to
act as a generator; the rotating mechanical (kinetic) enĆ
ergy is converted into electrical energy that is dissipated
in the form of heat by the Dynamic Braking resistor.
Note that the resistor is sized for infrequent stops.
Thus, users must allow time between stops for heat disĆ
sipation.
When ordering the Kit, it is necessary to specify Model
Numbers according to horsepower and voltage ratings.
Table 1 - 230VAC. 3 Phase, 50/60 Hz 240VDC Armature
MinPak Plus
Model No.
FlexPak Plus
Model No. HP
RES Value
(OHMS)
Reliance
Part No. QUA
WattĆSeconds
@ 375 ° C
14C433 14C643 3 9.420 48267ĆL 1 ă2,466
14C420 14C630 5 5.930 48267ĆJ 1 ă3,937
14C421 14C631 7.5 3.891 48267ĆG 1 ă6,212
14C422 14C632 10 3.044 48267ĆF 1 ă7,981
14C423 14C633 15 1.912 48267ĆD 1 12,981
14C424 14C634 20 1.523 48267ĆC 1 16,355