Rockwell Automation DC3R User Manual

DC3R Isolation Option Board
User Guide

Instruction Manual D2-3454

The information in this manual is subject to change without notice.
Throughout this manual, the following notes are used to alert you to safety

considerations:

ATTENTION: Identifies information about practices or circumstances
that can lead to personal injury or death, property damage, or economic
loss.

m

IMPORTANT: Identifies information that is critical for successful application and
understanding of the product.

ATTENTION: Only qualified personnel familiar with the construction and
operation of this equipment and the hazards involved should install,
adjust, operate, and/or service this equipment. Read and understand
this instruction manual in its entirety before proceeding. Failure to
observe this precaution could result in severe bodily injury or loss of life.

ATTENTION: The user is responsible for conforming with all applicable
local and national codes. Failure to observe this precaution could result
in severe bodily injury or loss of life.

ATTENTION: The control circuit is at line potential when the drive is
energized. Use a non-metallic screwdriver when making adjustments to
the circuit board potentiometers. Exercise extreme caution as
hazardous voltage exists. Failure to observe these precautions could
result in severe bodily injury of loss of life.

ATTENTION: It is possible for a drive to run at full speed as a result of a
component failure. Please ensure that a master switch has been placed
in the AC line to stop the drive in an emergency.

ATTENTION: Reduce the chance of an electrical fire, shock, or
explosion by proper grounding, over-current protection, thermal
protection and enclosure. Follow sound maintenance procedures.

ATTENTION: This Drive contains ESD (Electric Static Discharge)
sensitive parts and assemblies, Static control precautions are required
when installing, testing, servicing, or repairing this assembly. Failure to
observe these precautions could result in damage to, or destruction of,
the equipment.

m

Trademarks not belonging to Rockwell Automation are property of their respective companies.
©1999 Rockwell International Corporation.

iii

ATTENTION: Starting and stopping with the inhibit terminal pins does
not disconnect AC power in the stop position. A hardwired AC power
disconnection switch must be mounted in close proximity to the
operator’s start/stop controls. This is required, as the DC3 drive does
not have an armature loop contactor. A single fault like a power device
short may cause motor rotation when in the stop mode. The user is
responsible for assuring safe conditions for operating personnel by
providing suitable guards, audio or visual alarms, or other devices.
Failure to observe these precautions could result in bodily injury.

m

iv

Contents

Introduction 1
Specifications 2
Dimensions 3

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Isolation option board connections . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Installation 5

Input voltage select switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Speed adjust potentiometer connections . . . . . . . . . . . . . . . . . . . . . . . .7

Polarity reversal switch connections . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Calibration 10

Voltage input signal calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Calibration procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Current input signal calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Calibration procedure: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Troubleshooting 15

Before troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

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Figure 1. Isolation Option Board Dimensions . . . . . . . . . . . . . . . . . . . . . . . .3

Figure 2. Isolation Option Board Mounted on a Regenerative Drive . . . . . . .4

Figure 3. Isolation Option Board Connections . . . . . . . . . . . . . . . . . . . . . . . .5

Figure 4. Input Voltage Select Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Figure 5. Speed Adjust Potentiometer Connections . . . . . . . . . . . . . . . . . . .7

Figure 6. Polarity Reversal Switch Connection . . . . . . . . . . . . . . . . . . . . . . .8

Figure 7. Open Collector PNP Transistor . . . . . . . . . . . . . . . . . . . . . . . . . .9

Figure 8. Polarity Reversal Using NPN Transistor

Used as a Polarity Reversal Switch . . . . . . . . . . . . . . . . . .9

Figure 9. Calibration Trimpot and DIP Switch Layout . . . . . . . . . . . . . . . . .10

Illustrations

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1

The isolation option board allows regenerative drives to accept a
grounded or floating DC voltage or current signal.

This manual contains specifications, installation procedures, connections,
and calibration procedures for the isolation option board. Refer to your
regenerative drive user’s manual for additional installation, operation,
and troubleshooting procedures.

Introduction

2

Specifications

Power Requirements

Line input 115VAC/230 VAC, 50/60 Hz, single phase

Input Signal Ranges

Voltage signal, narrow range –25 to +25 VDC
Voltage signal, wide range –250 to +250 VDC
Current signal 1–5 mADC, 4–20 mADC, 10–50 mADC

Input Impedance

Voltage signal >25K ohms
Current signal, 1–5 mADC 1K ohms
Current signal, 4–20 mADC 235 ohms
Current signal, 10–50 mADC 100 ohms

Output

Voltage range, max –10 to +10 VDC
Linearity 0.01%

Safety Certification UL Listed Component

cUL Listed Component

CE Approved Component