Omron SYSMAC CS Series Operation Manual page 73

CS1W-PTS03 Isolated-type Resistance Thermometer Input Unit
Terminal Connection Diagram
Resistance thermometer
Input No. 2
Note
Terminal Block Diagram
Input No. 1
Resistance thermometer
Input No. 2
Resistance thermometer
Input No. 3
Resistance thermometer
Input No. 4
Resistance thermometer
60
CS1W-PTS03 Isolated-type Resistance Thermometer Unit
1. Wire the same length to A, B, and b, so that the impedance will be the
same. In particular, do not short circuit between B and b at the terminal
block.
2. For unused input terminals, short-circuit between A–B and B–b (e.g., A2–
A3 and A3–A4 for input No. 1) of the resistance thermometer inputs with
the lead wire.
CS1W-PTS03 Isolated-type Resistance Thermometer Input Unit
Constant current circuit
Isolation
circuit
470 Ω
Amplifier
Standard
resistance
Constant current
circuit
Constant current circuit
Isolation
circuit
470 Ω
Amplifier
Standard
resistance
Constant current
circuit
Constant current circuit
Isolation
circuit
470 Ω
Amplifier
Standard
resistance
Constant current
circuit
Constant current circuit
Isolation
circuit
470 Ω
Amplifier
Standard
resistance
Constant current
circuit
Resistance thermometer (Ni508.4 Ω)
Input No. 1
Resistance thermometer
Input No. 3
Resistance thermometer
Input No. 4
Amplifier circuit
A/D converter
Digital computation circuit
5 V DC
Isolated power supply circuit
26 V DC
Section 2-3
To CPU Unit