Rockwell-automation 1395 Digital DC Drive User Manual download pdf (Page 39)

Publication 2361-5.01 July 1998

Chapter

Your 1650A DC Drive

Contents This chapter is designed to help you understand the construction of

your 1650A Bulletin 1395 DC drive. The following topics will be

covered in this chapter:

Introduction Your 1650A DC drive functions with the following features:

• The 1650A drive uses twelve SCRs (regenerative) or six SCRs

(non-regenerative) in the armature bridge to convert the 3-phase

AC input to a DC output. The SCRs are built into a heatsink

assembly and are cooled by the bridge fan.

• The 1650A drive is protected from incoming fault currents with a

circuit breaker, and the DC output is protected from fault currents

with a DC contactor. The components of your drive (the

armature bridge, field bridge, and control components) are

guarded with fuses, MOVs, snubbers, and/or chokes.

• The 1650A drive is constructed and housed in three bays, the first

bay containing the AC input and control hardware, the second

bay containing the armature bridge hardware, and the third bay

containing the DC output hardware.

• The 1650A drive has an optional top-hat extension available for

the AC input bay.

• The 1650A drive can be built with an optional through bus

assembly, allowing the 1650A drive and other connected drives

to tap off from the same AC input.

Topic Page

Introduction 3-1

Drive Layout 3-2

Drive Schematics 3-3

Symbol Reference Chart 3-6

Drive Structure 3-8

Conclusion 3-8

Input Voltage (V AC) Nominal Output HP

460 800-1000

575 1000-1250

660 1250

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 90 91

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Rockwell-automation 1395 Digital DC Drive User Manual Page 39