beautypg.com

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

Accessory dynamic braking kit

background image

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