Warning, Notice – WIKA CS4S User Manual

Page 10

Operating Instructions Temperature Indicating Controller CS4S

V1.1

•

10/2006

- 10 -

4. Wiring connection

Warning

Turn the power supply to the instrument off before wiring or checking it.
Working or touching the terminal with the power switched on may result in Electric Shock
causing severe injury or death.

(Fig. 4-1)

• OUT1

: Control output 1

• OUT2

: Control output 2

• A1

: Alarm 1 output

• EVT

: Event output (A2 output, Heater burnout alarm output, Loop break alarm output)

• CT

: CT input

• SV2

: Main setting 2 (SV2)

• RS-485

: Serial communication (RS-485)

• TC

: Thermocouple

• RTD

: Resistance temperature detector

• DC

: DC current (DC mA), DC voltage (DC V)

• 50

: Shunt resistor 50

Ω for input signal DC current

Notice

• The terminal block of the CS4S is designed to be wired from the left side. The lead wire must be

inserted from the left side of the terminal, and fastened by the terminal screw.

• Dotted lines show options.
• Use a thermocouple and compensating lead wire according to the sensor input specification of this

controller.

• Use the 3-wire RTD which corresponds to the input specification of this controller.
• This controller does not have built-in power switch, circuit breaker or fuse. Therefore, it is necessary

to install them in the circuit near the external controller.
(Recommended fuse: Time-lag fuse, rated voltage 250V AC, rated current 2A)

• When using a 24V AC/DC for the power source, do not confuse the polarity when it is DC.
• When using a relay contact output type, externally use a relay according to the capacity of the load to

protect the built-in relay contact.

• When wiring, keep input wires (thermocouple, RTD, etc.) away from AC sources or load wires to

avoid external interference.

• Do not apply a commercial power source to the sensor connected to the input terminal nor allow the

power source to come into contact with the sensor.

POWER SUPPLY

24V AC/DC

100 to

240V AC

0.3A

250V

OUT

OUT1

EVT

SV2

RS-485

TC RTD