R200
Isolated Thermocouple Input Module TC4S User's Guide
37
September 2010
Honeywell
3. Installation and Wiring
3.1 Installation
Installation environment
The isolated thermocouple input module can be reliably installed regardless of
installation environment, it is essential to make note of the following before installation.
Environmental conditions
•
Ensure that you install the PLC in a control panel which is waterproof and can
withstand vibration.
•
Ensure that the module is not exposed to direct sunlight.
•
Ensure humidity level of 5 ~ 95%.
•
Ensure that the ambient temperature is maintained between 0 and 55°.
Installation considerations
•
Do not exert excessive force on it.
•
Do not separate PCB from the case.
•
Do not allow the impurities such as wiring dregs to go into the upper part of the
module. Remove them if they go into the module.
•
Do not attach or detach the module when it is turned ON.
3.2 Wiring
Wiring precautions
1.
Do not place AC power line close to the AUX signal line of the module. To avoid
surge or induced noise occurring from AC, ensure adequate spacing.
2.
Cable selection must take the ambient temperature and allowable current into
account. The maximum size of the cable is AWG22 (0.3
mm
2
3.
Ensure that the cable is not too close to a heating device or in direct contact with oil
and similar materials. It may cause short-circuit, resulting in breakdown and
malfunction of the module.
) and higher.
4.
Check the polarities during terminal strip wiring.
