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Medium Voltage CONTROLLER
INSTALLATION INSTRUCTIONS
Adjustment to Interlocking Mechanism
400A Framed Interlocked Contactor Kit
Bulletin 1503FR
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Important User Information
IMPORTANT
Read this document and the documents listed in the Additional Resources section about installation, configuration, and
operation of this equipment before you install, configure, operate, or maintain this product. Users are required to
familiarize themselves with installation and wiring instructions in addition to requirements of all applicable codes, laws,
and standards.
Activities including installation, adjustments, putting into service, use, assembly, disassembly, and maintenance are required
to be carried out by suitably trained personnel in accordance with applicable code of practice.
If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be
impaired.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the
use or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and
requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or
liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or
software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation,
Inc., is prohibited.
Throughout this manual, when necessary, we use notes to make you aware of safety considerations.
WARNING: Identifies information about practices or circumstances that can cause an explosion in a hazardous environment,
which may lead to personal injury or death, property damage, or economic loss.
ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property
damage, or economic loss. Attentions help you identify a hazard, avoid a hazard, and recognize the consequence.
Identifies information that is critical for successful application and understanding of the product.
Labels may also be on or inside the equipment to provide specific precautions.
SHOCK HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that dangerous
voltage may be present.
BURN HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that surfaces may
reach dangerous temperatures.
ARC FLASH HAZARD: Labels may be on or inside the equipment, for example, a motor control center, to alert people to
potential Arc Flash. Arc Flash will cause severe injury or death. Wear proper Personal Protective Equipment (PPE). Follow ALL
Regulatory requirements for safe work practices and for Personal Protective Equipment (PPE).
Allen-Bradley, Rockwell Software, Rockwell Automation, and TechConnect are trademarks of Rockwell Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.
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Table of Contents
General Information Chapter 1
Document Scope ........................................................................... 1-1
Product Identification .................................................................... 1-1
Interlock Adjustment Chapter 2
Product Description ....................................................................... 2-1
Ratings ........................................................................................... 2-1
Interlock Adjustment ..................................................................... 2-1
1503FR-IN001B-EN-E – June 2013
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ii Table of Contents
1503FR-IN001B-EN-E – June 2013
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Chapter 1
General Information
Document Scope This User Manual pertains to the Rockwell Automation
Bulletin 1503FR Frame Interlock Contactor Kit.
This document should be used along with publication
1502-UM051_-EN-P.
Product Identification
Figure 1.1 – Typical Nameplate
A nameplate is attached to the frame of this structure (see
Figure 1.1). Refer to the nameplate for information such as
series number, section number, voltage and amperage rating.
Refer to the nameplate whenever you contact Rockwell
Automation for assistance. Be prepared to provide such
information as series number, structure series, unit series,
diagram schematic and catalog number.
1503FR-IN001B-EN-E – June 2013
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1-2 General Information
111
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Chapter 2
Product Description
Note: This item can only be used on reversing or two-speed
Ratings
Part Number Current Rati ng Contactor Type Control Voltage Voltage Range
1503FR-E4GU 400A Electrically Held 110-120VAC 2.5 – 5.0 kV
1503FR-E4KU 400A Electrically Held 110-120VAC 5.1-6.9 kV
Interlock Adjustment
The Allen-Bradley Bulletin 1503FR Frame Interlocked
Contactor Kit uses electrically held contactors, 400 amp, and
is rated from 2400 to 7200 volts. The Bulletin 1503FR can
be used on reversing or two speed application. The
mechanical interlock prevents the possibility of both
contactors being energized at the same time. Each Bulletin
1503FR Kit is also supplied with two IntelliVAC control
modules, to control the operation of each contactor. Also
included is a wiring harness that connects each IntelliVAC
control module to the medium voltage Bulletin 1502 400
amp contactor.
applications.
If the mechanical interlock between the two contactors ever
needs to be adjusted please use following procedure.
A T T E N T I O NA T T E N T I O N
1) On the right hand side of the interlocked contactor, is
the mechanical interlock between the top and bottom
contactor. (Figure 2.1)
To avoid shock hazards, lockout incoming
power before working on the equipment. Verify
with a hot stick or appropriate voltage measuring
device that all circuit s are voltage free. Failure
to do so may result in severe burns, injury or
death.
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2-2 Produc t Description
Interlock Adjustment
Figure 2.1 – Front View of Unit
2) At the top of the mechanical interlock is the interlock
lever adjustment. (Figure 2.2)
Mechanical Interlock
(cont.)
5/16” Adjustment Nut
Lock Nut
Figure 2.2 – Top Interlock Lever
3) To adjust the interlock, first loosen the lock nut and then
the 5/16” Adjustment nut. (Figure 2.2) At the bottom of
the interlock assembly is the interlock cam. (Figure 2.3)
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Product Description 2-3
4) Manually move the top mounted interlock lever so
the top mounted contactor is in the closed position.
The gap between the interlock cam and the interlock
lever should be between .031” and .052”.
Note: Use a ¼” flat washer as required to space
interlock lever and cam to obtain a proper
clearance. (Figure 2.4)
Figure 2.4 – Clearance Between Interlock Lever: Contactor Closed
5) Secure the 5/16” Adjustment Nut, shown in
figure 2-2, to maintain the distance range
established from the prior step.
6) Release the top mounted interlock lever so the
top mount contact is in the open position. The
gap between the interlock cam and the
interlock lever should be between. 031” and
.052”.
Figure 2.3 – Interlock Cam
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2-4 Produc t Description
Interlock Adjustment
(cont.)
Note: Use a ¼” flat washer as required to space
interlock lever and can to obtain a proper clearance.
(Figure 2.5)
8) As a final test, apply 120 V control power to
the contactors and cycle the contactors (an
example: forward/reverse) to ensure the
mechanical i n terlock has been adjusted
properly and the 1503FR operates properly.
9) There maybe a number of trial and error
adjustments needed to ensure that all the
required dimensions are established.
Figure 2.5 – Clearance Between Cam and Lever: Contactor Open
7) Use two lock nuts to adjust the space clearance.
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