CTD Series
Analog Output
Input Current
CTD-C2G00-1
5 VDC
0 VDC
0 A 30/60/
120 A
Analog O utput
CTD-C3H00-1
10 VDC
0 VDC
0 A
20/100/
150 A
Analog Output
CTD-C1G00-1
20 mA
4 mA
0 A 30/60/
120 A
Current Transducer Devices
Code No. LIT-1900751
Issued July 28, 2011
Description
The Current Transducer Device (CTD) Series
of analog output current transducers are
nonintrusive devices designed to monitor
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.
These units are available with standard
4 to 20 mA current loop, 0 to 5 VDC, and
0 to 10 VDC analog output. The voltage output
models derive excitation by magnetic
induction from the current-carrying conductor
(wire or cable), making these units completely
self-powered. The current loop output model
requires a 24 VDC power supply.
Optional command relays (CR-01200-0 and
CR-02400-0) provide externally controlled
auxiliary contacts when used with the current
transducers. The relays offer a cost-effective
solution for switching loads that require higher
power levels than the rating of the current
switch contacts, or the need to mount an
external relay elsewhere in the control
enclosure.
Refer to the CTD Series Current Transducer
Devices Product Bulletin (LIT-12011714) for
important product application information.
Features
• clamped/split core design — reduces
installation time and associated costs
• slide switch, selectable amperage ranges
— provides a wide array of amperage
ranges to match the application
• multiple outputs: 4 to 20 mA, 0 to 5 VDC, or
0 to 10 VDC — provide the appropriate
output for the specific application
• snap-on power relay — provides an easy
way to add an external relay to the current
sensor
• relay (optional) LED indication Off/On
status — allows you to easily check the
relay’s on/off status
Repair Information
If the CTD transducers fail to operate within its
specifications, replace the unit. For a
replacement enclosure, contact the nearest
Johnson Controls® representative.
Ordering Information
Product Ordering
Product Code
Number
CTD-C1G00-1 Split/Clamped 30/60/120 A 4 to 20 mA
CTD-C2G00-1 Split/Clamped 30/60/120 A 0 to 5 VDC With Optional Relay
CTD-C3H00-1 Split/Clamped 20/100/150 A 0 to 10 VDC With Optional Relay
1. Requires a 24 VDC/25 mA external power supply.
2. The relay is an accessory.
Accessories
Product Code Number Product Code Description
CR-01200-0
CR-02400-0
1. Refer to the Command Relay Installat i on Instructions (Part No. 24-10345-50) for more information regarding the command relays.
The performance specifications are nomina l and conf orm to accep table industr y standar ds. For ap plications a t condition s beyond th ese specification s, consult the local Johnson Controls o ffice.
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2011 Johnson Controls, Inc.
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1
Core Type Multi Range Output Signal LED Display Relay
1
With Optional Relay
12 VAC/VDC Single-Pole, Single-Throw (SPST), Normally Open (N.O.) Relay
24 VAC/VDC SPST, N.O. Relay
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Snap-On Accessory
Snap-On Accessory
Snap-On Accessory
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Current Transducer Devices (Continued)
Technical Specifications
CTD Series Current Transducer Devices
Current Range (Selectable) 30/60/120 A 30/60/120 A 20/100/150 A
Maximum Continuous Operating Current 30/60/120 A 30/60/120 A 20/100/150 A
Output 4 to 20 mA 0 to 5 VDC 0 to 10 VDC
Accuracy ±2.0% Full Scale from 10% to 100% of Selected Range
Relay with LED Indicator Available Accessory
Response Time 2 Seconds to 100% of Selected Range
Sensor Supply Voltage 24 VDC (18 to 30 VDC) Self-Powered Self-Powered
Wire Size 12 to 22 AWG (2.1 to 0.6 mm) Diameter Recommended
Isolation Voltage 600 VAC rms
Temperature Range 5 to 140°F (-15 to 60°C)
Frequency Range 50/60 Hz
Humidity Range 0 to 95% RH, Noncondensing
Screw Torque 4 lb·in (0.5 N·m)
Dimensions 2-23/32 x 2-9/16 x 1-1/16 in. (69 x 65 x 27 mm)
Aperture (Sensing Hole) Size 23/32 in. x 13/16 in. (18 x 20 mm Diameter)
Compliance United States UL Listed, File E310692, CCN NRNT, Under UL 508, Industrial Control Equipment
Shipping Weight 0.35 lb (0.16 kg)
Product Code CTD-C1G00-1 CTD-C2G00-1 CTD-C3H00-1
Canada UL Listed, File E310692, CCN NRNT7, Under CAN/CSA C22.2 No. 14-05
Europe CE Mark – Johnson Controls, Inc., declares that this product is in compliance with the essential requirements and
Industrial Control Equipment
other relevant provisions of the EMC Directive 2004/108/EC and the Low Voltage Directive 2006/95/EC.
The performance specifications are no minal a nd conform t o accept able ind ustry stand ards. For app lication s at condi tions be yond these specifications, cons ult the local Johnso n Controls office.
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2011 Johnson Controls, Inc.
www.johnsoncontrols.com
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