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Rockwell Automation 1395 DC Drive, 800-1250 Hp, FRN 5.XX-9.30 User Manual

Page 17

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Chapter 2
Hardware Description

2-4

DC Current Sensing – DC overcurrent sensing is provided using a DC
transducer.

Figure 2.3

AB0678A

Snubber

Snubber

Snubber

Snubber

Snubber

Snubber

Snubber

Snubber

Snubber

Snubber

Snubber

Snubber

(–) Bridge A22

24FA

24FB

1R

4F

21FA

21FB

4R

1F

(+) Bridge A21

25FA

25FB

3R

6F

6R

3F

22FA

22FB

26FA

26FB

23FA

23FB

2R

5F

5R

6F

S1

To TB5

To Feedback Board

PR

M1

A2

A1

A2

A1

Fld +

Fld –

TB7

FCT

L1A
L3A

Field

Bridge

To Field Pulse Transformer

& Snubber Board

To Feedback Board

TB1–8&9

To Power Stage

Interface Board

To Feedback Board

To Armature Pulse

Transformer Board

To Armature Pulse

Transformer Board

To Armature Pulse

Transformer Board

To Armature Pulse

Transformer Board

To Armature Pulse

Transformer Board

To Armature Pulse

Transformer Board

M1