Datasheet
205Temperature Control Units
Programmable
Controllers
CJ1W-TC@@
Temperature Control Units
One Unit Functions as Four Temperature
Controllers
• Supports 2-loop or 4-loop PID control or ON/OFF
control.
• The PID constants for PID control can be set using
auto-tuning (AT).
• Select either forward (cooling) operation or reverse
(heating) operation.
• Input directly from temperature sensors. (Thermo-
couples: R, S, K, J, T, B, or L; or platinum resistance
thermometers: JPt100 or Pt100.)
• Open collector output
• Sampling period: 500 ms
• RUN/STOP control.
• Two internal alarms per loop.
• With 2-loop models, a current transformer can be
connected to each loop to detect heater burnout.
Function
Perform PID control (two degrees of freedom) or ON/OFF control
based on inputs from thermocouples or platinum resistance thermome-
ters to control open collector output. Four-loop models and two-loop
models (with heater burnout detection function) are available. Words
allocated to the Unit in memory can be manipulated from the ladder dia-
gram to start/stop operation, set the target value, read the process
value, or perform other operations.
System Configuration
Terminal Wiring Examples
Thermocouple Temperature Control Units
Note: Do not connect any wiring to the N. C. terminals.
Temperature sensor
Control output
CJ1W-TC001
(4 loops, NPN outputs)
CJ1W-TC002
(4 loops, PNP outputs)
CJ1W-TC003
(2 loops, NPN outputs, HB alarm)
CJ1W-TC004
(2 loops, PNP outputs, HB alarm)
Input 2 −
Input 2 +
Cold-junction comp.
Cold-junction comp.
Input 1 −
Input 1 +
N.C.
N.C.
Input 3 −
Input 3 +
Output 1
Output 3
24 V
B1
B2
B3
B4
B5
B6
B7
B8
B9
Input 4 −
Input 4 +
Output 2
Output 4
0 V COM (−)
A1
A2
A3
A4
A5
A6
A7
A8
A9
Input 2 −
Input 2 +
Cold-junction comp.
Cold-junction comp.
Input 1 −
Input 1 +
N.C.
N.C.
Input 3 −
Input 3 +
Output 1
Output 3
24 V COM (+)
B1
B2
B3
B4
B5
B6
B7
B8
B9
Input 4 −
Input 4 +
Output 2
Output 4
0 V
A1
A2
A3
A4
A5
A6
A7
A8
A9
Input 2 −
Input 2 +
Cold-junction comp.
Cold-junction comp.
Input 1 −
Input 1 +
N.C.
N.C.
CT input 1
CT input 1
Output 1
HB output 1
24 V
B1
B2
B3
B4
B5
B6
B7
B8
B9
CT input 2
CT input 2
Output 2
HB output 2
0 V COM (−)
A1
A2
A3
A4
A5
A6
A7
A8
A9
Input 2 −
Input 2 +
Cold-junction comp.
Cold-junction comp.
Input 1 −
Input 1 +
N.C.
N.C.
CT input 1
CT input 1
Output 1
HB output 1
24 V COM (+)
B1
B2
B3
B4
B5
B6
B7
B8
B9
CT input 2
CT input 2
Output 2
HB output 2
0 V
A1
A2
A3
A4
A5
A6
A7
A8
A9
Y201-EN2-03.book Seite 205 Donnerstag, 30. März 2006 1:52 13