Johnson Controls CTD Series Installation Guide

CTD Series Current Transducer Devices

34- 10345-69, Rev. D

Installation Instructions

CTD-C1G00-1, CTD-C2G00-1, CTD-C3H00-1

Refer to the QuickLIT website for the most up-to-date version of this document.

Part No. 24-10345-69, Rev. D

Issued March 2016

Applications

The Current Transducer Device (CTD) Series of anal og
output current transducers are nonintrusive devices
designed to detect current flowing through a cable or
wire. These units are a cost-effective solution for
monitoring load or proof of operation. The current
transducers are ideal for monitoring current loads on
pumps, driving fans and blowers, and sensing the
status of heating coils and lighting. CTD devices used
for load trending over time are effective sensors for
predictive maintenance programs.

Optional command relays provide externally controlled
auxiliary contacts. The relays offer a solution for
switching loads that require higher power levels than
the rating of the current switch contacts.

These units are available with standard 4 to 20 mA
current loop, 0 to 5 VDC, and 0 to 10 VDC analog
output. Completely self-powered, the CTD-C2G00-1
and CTD-3H00-1 units draw their power from the
current induced from the monitored cable or line. The
CTD-C1G00-1 device requires a 24 VDC power supply.

IMPORTANT: The CTD Series Current Transducer
Device is intended to provide an input to equipment
under normal operating conditions. Where failure or
malfunction of the transducer could lead to personal
injury or property damage to the controlled
equipment or other property, additional precautions
must be designed into the control system.
Incorporate and maintain other devices, such as
supervisory or alarm systems or safety or limit
controls, intended to warn of or protect against
failure or malfunction of the transducer.

IMPORTANT : Le CTD Series Current Transducer
Device est destiné à transmettre des données
entrantes à un équipement dans des conditions
normales de fonctionnement. Lorsqu'une défaillance
ou un dysfonctionnement du transducer risque de
provoquer des blessures ou d'endommager
l'équipement contrôlé ou un autre équipement, la
conception du système de contrôle doit intégrer des
dispositifs de protection supplémentaires. Veiller
dans ce cas à intégrer de façon permanente
d'autres dispositifs, tels que des systèmes de
supervision ou d'alarme, ou des dispositifs de
sécurité ou de limitation, ayant une fonction
d'avertissement ou de protection en cas de
défaillance ou de dysfonctionnement du transducer.

IMPORTANT: Be sure to install the CTD Series
Current Transducer Device only on the input side of
a variable speed drive.

CTD Series Current Transducer Devices Installation Instructions 1

Installation

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Figure 1: CTD Dimensions, in. (mm)

1-1/16 (27)

Fig:sc_sde

2-9/16 (65)

2-23/32 (69)

Fig:splt_cre_frnt

Figure 2: Model CTD-C1G00-1

Contactor

Motor

Fan or Pump

WARNING: Risk of Electric Shock.

Disconnect the power supply before
making electrical connections. Cont act with
components carrying hazardous voltage
can cause electric shock and may result in
severe personal injury or death.

AVERTISSEMENT : Risque de
décharge électrique.

Débrancher l'alimentation avant de réaliser
tout branchement électrique. Tout contact
avec des composants conducteurs de
tensions dangereuses risque d'entraîner
une décharge électrique et de provoquer
des blessures graves, voire mortelles.

WARNING: Risk of Personal Injury.

Do not touch the relay while power is
applied to it. The relay surface is hot
during use, and may cause a serious
burn upon contact.

AVERTISSEMENT : Risque de
blessure.

Ne pas toucher le relais lorsque le relais
est sous tension. La surface du relais
devient extrêmement chaude durant son
utilisation et risque de provoquer des
brûlures graves en cas de contact.

Wiring

1. Disconnect the conductor cable from the power
source.

2. Snap the split core around the power conductor
cable, and close the core until the core snaps shut.

3. Wire the CTD output terminals to the control box
Analog Input (AI) terminal. See Technical
Specifications for wire size and screw torque.

4. Select the input current range at the front panel
slide switch. See Figure 5 and Setting the Current
Range section.

5. Reconnect the power conductor cable. For a wiring
example, see Figure 2.

Dimensions

Mounting

1. Use the two screws (included) to attach the

2. Snap the CTD device into place on the mounting

mounting bracket to the back of the electrical
enclosure.

bracket.

If the measured current is too low to be detected or it is
higher than the maximum current rating of the CTD
device, use the following methods to increase or
decrease the current.

CTD Series Current Transducer Devices Installation Instructions2