Rockwell Automation 1734-CTMVTM User Manual

Installation Instructions

POINT I/O Common Terminal Module and
Voltage Terminal Module

Catalog No. 1734-CTM, Series C, and 1734-VTM, Series C

Module Locking Mechanism

Insertable I/O Module

Module Wiring Diagram

DIN Rail

Mechanical keying
(orange)

Interlocking
Side Pieces

Locking
Screw
(orange)

Mounting Base

RTB Removable Handle

Removable Terminal
Block (RTB)

31538-M

The Wiring Base Assembly consists of Mounting Base, 1734-MB,
and Removable Terminal Block, 1734-RTB or 1734-RTBS.

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S

Important User Information

Solid state equipment has operational characteristics differing from those of
electromechanical equipment. Safety Guidelines for the Application, Installation and
Maintenance of Solid State Controls (Publication SGI-1.1 available from your local Rockwell
Automation sales office or online at http://literature.rockwellautomation.com) describes
some important differences between solid state equipment and hard-wired
electromechanical devices. Because of this difference, and also because of the wide variety
of uses for solid state equipment, all persons responsible for applying this equipment must
satisfy themselves that each intended application of this equipment is acceptable.

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 pers onal injury or death, property damage, or
economic loss.

IMPORTANT

ATTENTION

HOCK HAZARD

BURN HAZARD

Publication

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

Identifies information about practices or ci rcumstances that can lead to pe rsonal injury or
death, property damage, or economic loss. Attentions help you:

• identify a hazard

• avoid a hazard

• recognize the consequence

Labels may be located on or inside the equipment (e.g., drive or motor) to alert people
that dangerous voltage may be present.

Labels may be located on or inside the equipment (e.g., drive or motor) to alert people
that surfaces may be dangerous temperatures.

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WARNING

Environment and Enclosure

This equipment is intended for use in a Pollution Degree
2 industrial environment, in overvoltage Category II
applications (as defined in IEC publication 60664-1), at
altitudes up to 2000 meters without derating.

This equipment is considered Group 1, Class A industrial
equipment according to IEC/CISPR Publication 11.
Without appropriate precautions, there may be potential
difficulties ensuring electromagnetic compatibility in
other environments due to conducted as well as radiated
disturbance.

This equipment is supplied as “open type” equipment. It
must be mounted within an enclosure that is suitably
designed for those specific environmental conditions that
will be present and appropriately designed to prevent
personal injury resulting from accessibility to live parts.
The interior of the enclosure must be accessible only by
the use of a tool. Subsequent sections of this publication
may contain additional information regarding specific
enclosure type ratings that are required to comply with
certain product safety certifications.

See NEMA Standards publication 250 and IEC publication
60529, as applicable, for explanations of the degrees of
protection provided by different types of enclosure. Also,
see the appropriate sections in this publication, as well as
the Allen-Bradley publication 1770-4.1 (“Industrial
Automation Wiring and Grounding Guidelines”), for
additional installation requirements pertaining to this
equipment.

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WARNING

Explosion Hazard

Do not disconnect equipment unless power has been
removed or the area is known to be nonhazardous.

Do not disconnect connections to this equipment unless
power has been removed or the area is known to be
nonhazardous. Secure any external connections that mate
to this equipment by using screws, sliding latches,
threaded connectors, or other means provided with this
product.

Substitution of components may impair suitability for
Class I, Division 2.

If this product contains batteries, they must only be
changed in an area known to be nonhazardous.

About the Modules

The POINT I/O Common Terminal Module and Voltage Terminal
Module provide expansion of the termination capability of POINT
I/O. The modules support higher density (8 channel) POINT I/O
modules and management of wiring of field devices to the POINT
I/O solution.

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Install the Mounting Base

To install the mounting base on the DIN rail, proceed as follows.

1. Position the mounting base vertically above the installed units
(adapter, power supply, or existing module).

2. Slide the mounting base down so that the interlocking side
pieces to engage the adjacent module or adapter.

3. Press firmly to seat the mounting base on the DIN rail. The
mounting base snaps into place.

Install the Module

Install the module before or after mounting base installation. Be sure
to correctly key the mounting base before installing the module into
the mounting base. In addition, be sure to position the mounting
base locking screw horizontal referenced to the base.

WARNING

When you insert or remove the module while backplane
power is on, an electrical arc can occur. This could cause
an explosion in hazardous location installations.
Be sure that power is removed or the area is
nonhazardous before proceeding. Repeated electrical
arcing causes excessive wear to contacts on both the
module and its mating connector. Worn contacts may
create electrical resistance that can affect module
operation.

1. Using a bladed screwdriver, rotate the keyswitch on the
mounting base clockwise until the number required for the
type of module you are installing aligns with the notch in the
base.

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