Rockwell Automation 1414-CTZxx User Manual

Installation Instructions

Space Temperature Transmitter

Catalog Number(s) 1414-CTZ03PBRAA,
1414-CTD03PBRAA, 1414-CTO03PBRAA,
1414-CTS03PBRAA, 1414-CTT03PBRAA,
1414-ITS03PBRAA, 1414-ITT03SBRAA,
1414-ITZ02GBRAA, 1414-ITD02GBRAA,
1414-ITO02GBRAA, 1414-ITT02SBRAA,
1414-ITO03GBRAA, 1414-ITS02GBRAA,
1414-ITZ03PBRAA, 1414-ITD03PBRAA

Publication 1414-IN012A-EN-P - October 2005

2 Space Temperature Transmitter

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://www.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

IMPORTANT

ATTENTION

SHOCK HAZARD

BURN HAZARD

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.

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

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 consequences.

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.

Publication 1414-IN012A-EN-P - October 2005

Space Temperature Transmitter 3

About Space Temperature Transmitter

The unit is designed to convert a 1000 ohm RTD signal and provide a 4 to 20 mA
analog output with ±0.15°C Class A, ±0.30°C Class B and 0.1% FSO accuracy for the
board.

Designed for temperature measurement of occupied spaces. Featuring several
enclosure styles to accommodate various job requirements.

Install Space Temperature Transmitter

Transmitters are mounted directly on a wall or to a wall box. For the most accurate
results, units should be mounted on an inside wall to a wall box, approximately 3
to 5 feet from the floor, away from any supply air exhausts and other sources of
heat or cold. The enclosure cover is held in place with a locking tab located to the
left of center at the bottom of the enclosure. Remove the setpoint knob before
removing the cover. Use a set screw (1/16” or 1.5 mm) to lock the cover at the
bottom of the enclosure after installation.

Wire and Connect Space Temperature Transmitter

Connect the transmitter to the controller using 18 to 22 AWG twisted pair wiring.
The transmitter requires two wires for DC 4 to 20 mA loop-powered operation. The
use of shielded cable is optional but recommended for the highest noise immunity.
Do not route signal wires in the same conduit with power cables as signal
degradation may occur. The controller Analog Input (AI) must be selected to match
the transmitter output before power is applied. The AI type must be a current input
with 250 or 500 ohm impedance. All transmitters have an operating range of
0 to 70 °C (32 to 158 °F). The transmitter board should not be mounted where
temperatures exceed these values. See the connection diagram for more details.

Options, if included on your unit, are wired at the Setpoint and Override terminals.
The Return terminal is used as the common for both of these options. The LCD
display is powered by the same supply as the transmitter.

Wire to a Programmable Controller

This section indicates typical wiring connections to a programmable controller.

When you use this connection scheme, the nominal setpoint is wired to a 0 to 20
mA analog input. The setpoint current signal is reverse acting with respect to the
position of the setpoint slider. The setpoint current varies from 1.2 mA at the
minimum position to 0.8 mA at the maximum position. An analog input with 14-bit
resolution provides a resolution of 0.06°F over a range of 60 to 80°F. Analog

Publication 1414-IN012A-EN-P - October 2005