Omron, CJ1W-TC

• Built-in PID control with 2 or 4 control loops or ON/OFF control

• Direct input of 7 types of thermocouple or resistance thermometer

• 500 ms sampling cycle

• RUN/STOP control from CPU Unit

• Unrestricted CPU Unit cycle time

• Heater burnout detection

• Auto-tuning (AT) function

General Specifications

Item	Specification
Unit classification	CJ-series Special I/O Unit
Compatible Racks	CJ-series CPU Rack or CJ-series Expansion Rack
Max. number of Units	10 Units/Rack max. (CPU Rack or Expansion Rack)
CPU Unit data areas for data storage/exchange	Special I/O Unit Area (960 words) CIO 2000 to CIO 2959	20 words/Unit for constant data exchange (6 output words and 14 input words)	CPU Unit to Temperature Control Unit	Set point (SP) Operating commands RUN/STOP control Start/Stop AT Write commands Heater burnout set value
	Special I/O Unit Area (960 words) CIO 2000 to CIO 2959		Temperature Control Unit to CPU Unit	Process value (PV) Set point (SP) Status Heater current monitor
	DM words allocated to Special I/O Units (9,600 words) D20000 to D29599	10 words/Unit transferred when power is turned ON or Unit is restarted	CPU Unit to Temperature Control Unit	Alarm mode Alarm hysteresis
		90 words/Unit for regular data exchange	Two-way transfer between CPU Unit and Temperature Control Unit	Alarm value Input compensation value Control period Hysteresis Proportional band Integral time Derivative time Output monitor
Insulation resistance	20 M Ω min. (at 500 VDC) between the following points: All output and NC terminals and external AC terminals (Power Supply Unit) All input terminals and external AC terminals (Power Supply Unit) All input terminals and all output terminals All external DC terminals (inputs, outputs, and NC) and the FG plate Between input terminals (sensor and CT inputs) I/O terminals and NC terminals
Dielectric strength	2,000 VAC 50/60 Hz for 1 min., detected current: 1 mA The output terminals/NC terminals and external AC terminals (Power Supply Unit) 1,000 VAC 50/60 Hz for 1 min., detected current: 1 mA Input terminals and external AC terminals (Power Supply Unit) Input terminals and output terminals External DC terminals (inputs, outputs, and NC) and the FG plate 500 VAC 50/60 Hz for 1 min., detected current: 1 mA Between input terminals (sensor and CT inputs) I/O terminals and NC terminals
Internal current consumption	250 mA max., 5 VDC
Other	Other general specifications conform to the CJ-series general specifications.
Dimensions	31 × 90 × 65 mm (W × H × D)
Weight	150 g max.

Characteristics

Item	Specification
Model number	CJ1W-TC00[]	CJ1W-TC10[]
Temperature sensor	Thermocouple: R, S, K, J, T, L, B	Platinum resistance thermometer: Pt100, JPt100
Number of loops	4 loops or 2 loops with heater burnout detection *1
Control output and heater burnout alarm output	NPN or PNP outputs, both with short-circuit protection *1 External power supply voltage: 24 VDC +10%, -15% Max. switching capacity: 100 mA (per output) Leakage current: 0.3 mA max. Residual voltage: 3 V max.
Temperature control method	ON/OFF control or PID control with two degrees of freedom (Set with pin 6 on the Unit's DIP switch.)
Control operation	Forward or reverse operation (Set with pins 4 and 5 on the Unit's DIP switch.)
RUN/STOP control	Supported (Controlled from the CPU Unit through bits allocated in the Special I/O Unit area.)
Operation with CPU Unit in PROGRAM mode	The Temperature Control Unit can be set to continue operating or stop operating when the CPU Unit is in PROGRAM mode. (Set with pin 1 on the Unit's DIP switch.)
Auto/Manual switch for operational output	None
Autotuning (AT) of PID constant	Supported (Controlled from the CPU Unit through bits allocated in the Special I/O Unit area.)
Indication accuracy	Celsius: ± 0.3% of PV or ± 1 ° C (whichever is larger) ± 1 digit max. Fahrenheit: ± 0.3% of PV or ± 2 ° F (whichever is larger) ± 1 digit max. L and - 100 ° C or less for K and T are ± 2 ° C ± 1 digit max. 200 ° C or less for R and S is ± 3 ° C ± 1 digit max. No accuracy is specified for 400 ° C or less for B *2	Celsius: ± 0.3% of PV or ± 0.8 ° C (whichever is larger) ± 1 digit max. Fahrenheit: ± 0.3% of PV or ± 1.6 ° F (whichever is larger) ± 1 digit max.
Hysteresis (when using ON/OFF control)	0.0 to 999.9 ° C or ° F (0.1 ° C or ° F units)
Proportional band	0.1 to 999.9 ° C or ° F (0.1 ° C or ° F units)
Integral (reset) time	0 to 9,999 s (one-second units)
Derivative (rate) time	0 to 9,999 s (one-second units)
Control period	1 to 99 s (one-second units)
Sampling period	500 ms (4 loops)
Output refresh period	500 ms (4 loops)
Display refresh period	500 ms (4 loops)
Input compensation value	- 99.9 to 999.9 ° C or ° F (0.1 ° C or ° F units)
Alarm output setting range	- 999 to 9,999 ° C or ° F (1 ° C or ° F units) The setting range will be - 99.9 to 999.9 ° C or ° F (0.1 ° C or ° F units) for K or J with decimal point mode, or platinum resistance thermometer.B24
External terminal connections	Removable terminal block with 18 points (M3 screws)
Effect on the CPU Unit's cycle time	0.4ms

*1. The last three digits of the model number indicate the Unit's features:

*2. Indication accuracy of thermocouples
• Accuracy ratings are given for the Temperature Control Unit used in a set with a cold-junction compensator (on the
terminal block). Always use the Unit and terminal block in a set. There are labels with serial numbers attached to
the terminal blocks and Units to help keep track of the sets.
• When returning a thermocouple-type Temperature Control Unit for repair, always return the Unit and the terminal
block (with the cold-junction compensator) as a set.

Heater Burnout (HB) Alarm

Item	Specification
Maximum heater current	Single-phase AC, 50 A
Indication accuracy of input current	±5% of full scale ± 1 digit max.
Heater burnout alarm setting range	0.1 to 49.9 A (0.1 A units) The heater burnout detection function will not operate if the set value is set to 0.0 A or 50.0 A. (When the SV is 0.0 A, the heather burnout alarm will be OFF. When the SV is 50.0 A, the heater burnout alarm will be ON.)
Min. detectable ON time *	200 ms

* If the control output is ON for less than 200 ms, the heater burnout detection function will not operate and heater
current measurement will not be performed.

Current Transformer (CT) Ratings

Item	E54-CT1	E54-CT3
Max. continuous heater current	50A	120 A *
Dielectric strength	1,000 VAC (1 min.)
Vibration resistance	50 Hz, 98 m/s²
Weight	Approx. 11.5 g	Approx. 50 g
Accessories	None	Contacts (2) Plugs (2)

Note: Do not use any Current Transformer (CT) other than the OMRON E54-CT1 or E54-CT3 Current Transformer.
* The maximum continuous heater current that can be detected at a CJ1W-TC[][][] Temperature Control Unit is 50 A.

(Unit: mm)

CJ1W-TC[][][]

Current Transformer (Optional)

E54-CT1

E54-CT3

TITLE	DOCUMENT TYPE	SIZE
CJ1W-TC	Catalog	1312 KB
CJ1W-TC[][][] Temperature Control Units	Manual	1718 KB
CJ1W-TC003/TC004/TC103/TC104 Temperature Control Units Operation (NJ-series)	Manual	2791 KB