Rockwell Automation 1734-TBCJC User Manual

Installation Instructions

POINT I/O Cold Junction Compensation Wiring Base Assembly

(Cat. No. 1734-TBCJC)

(For use with 1734-IT2I Thermocouple Input Module.)

Description Description

1 Wiring Base 4 Removable Wiring Block (RTB)

2 Mechanical Keying (orange) 5 Interlocking Side Pieces

3 RTB Removal Handle 6 DIN Rail Locking Screw (orange)

The wiring base consists of a base (1) and a removable terminal block (1734-RTBCJC)(4). The 1734-TBCJC uses screw-clamp termination.

Shield

Installing the Wiring Base

1. Position the wiring base vertically above the installed units (adapter,

power supply or existing module).

2. Slide the wiring base down allowing the interlocking side pieces to

engage the adjacent module or adapter.

3. Press firmly to seat the wiring base on the DIN rail. The wiring base will

snap into place.

4. To remove the wiring base from the DIN rail, remove the module, and

use a small bladed screwdriver to rotate the base locking screw to a vertical position. This releases the locking mechanism. Then lift straight up to remove.

Installing the Removable Terminal Block

A removable terminal block is supplied with your terminal base. To remove, pull up on the RTB removal handle.

WARNING: Explosion Hazard - Do not disconnect or replace components unless power is switched off or the area is known to be nonhazardous. Do not pull on the installed wiring to remove a

terminal block. A shock hazard exists if power is applied to the terminal block.

POINT I/O is a trademark of Rockwell Automation Publication 1734-IN583A-EN-P - March 2001

2 POINT I/O Cold Junction Compensation Wiring Base Assembly

This allows the base to be removed and replaced as necessary without removing any of the wiring. To reinsert the removable terminal block, proceed as follows:

1. Insert the end opposite the handle into the base unit. This end has a

curved section that engages the wiring base.

2. Rotate the RTB into the wiring base until it locks itself in place.

3. If an I/O module is installed, snap the RTB handle into place on the

module.

Removing a Wiring Base

In order to remove a wiring base, you must remove any module installed in the base, and any installed module to the right of the base, and remove the removable terminal block (if wired).

1. Snap open the RTB removal handle, or remove the removable terminal

block.

2. Squeeze the module locking mechanism and pull up to remove the

module(s).

3. Turn the wiring base locking screw to a vertical position to unlock the

base from the DIN rail.

4. Slide the wiring base up to release it from its mating units.

Refer to the user manual for keying information, specifications and how to configure your module.

Specifications - 1734-TBCJC (screw-clamp)

General Specifications

Field Power B us

Supply Voltage Supply Current

Dimensions I nches

Environmenta l Conditions Operational Temperatu re Storage Temperatur e Relative Humidity Shock Operating

Vibration

Conductors Wire Size

Terminal Base Screw Torque 5-7 po und-inches (0.5-0.6Nm)

Mass 1734-TBCJC - 3.44 oz /97.5 grams

Agency Certification (when product is marked)

1 Use this co nductor category infor mation for planning c onductor routing as de scribed in publication

(Millimeters)

Non-operating

1770-4.1, “Industrial Automation Wiring and Grounding Guidelines.”

28.8V dc, 120/24 0V ac 10A maximum

2.56H x 0.472W x 5.25L (65H x 12W x 1 33.4L)

-20 to 55

-40 to 85 5 to 95% noncondensi ng

30g peak acceler ation, 11(±1)ms pulse w idth 50g peak acceler ation, 11(±1)ms pulse w idth Tested 5g @ 10-500Hz per IEC 68-2-6

14 AWG (2.5mm 3/64 inch (1.2mm) i nsulation maximum