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Power Wiring

The controller is supplied to operate on 24V (20–32VAC/VDC) or 90–264VAC. Verify that the voltage of the power
supply corresponds to that indicated on the product label before connecting power to the controller.

This equipment is designed for installation in an enclosure which provides adequate protection against electrical

shock. The enclosure must be connected to earth ground.

Local requirements regarding electrical installation should be rigidly observed. Consideration should be given to prevent
unauthorized personnel from gaining access to the power terminals.

Input Wiring

Connect the appropriate sensor to terminals 12, 13, 14, 15, or 16 as indicated in figure 4.3. Make sure that the correct
sensor type is selected on the controller, and that the correct polarity is observed at both ends of the cable.
For thermocouple wiring, the correct type of extension wire must be used for the entire distance between the controller
and the thermocouple. The extension wires must be the same alloy and polarity as the thermocouple, and joints in the
cable should be avoided, if possible. The color codes used on the thermocouple extension wires are shown in table 4.1.
For wiring three-wire RTD, the two common wires should be connected to terminals 13 and 14, compensating lead
connected to terminal 13. When using a two-wire RTD, install a jumper between terminals 13 and 14. A three-wire RTD
offers the capability of lead resistance compensation, provided that all three leads are the same gauge and material, and
of equal length.

Table 4.1 International Thermocouple Cable Color Codes

* Color of overall sheath

Output Wiring

There are several types of output modules (see section 2) that can be selected for output 1 when ordering the TEC-
9200, depending on the control application. Make sure the output device you selected is appropriate for your application
requirements. The external connections will depend on the type of output installed. If pulsed voltage is selected, note
that pulsed voltage output is non-isolated.

Sensor Placement

Proper sensor installation can eliminate many problems in a control system. The probe should be placed so that it can
detect any temperature change with minimal thermal lag. In a process that requires fairly constant heat output, the probe
should be placed close to the heater. In a process where the heat demand is variable, the probe should be close to the
work area. Some experiments with probe location are often required to find the optimum position.

In a liquid process, the addition of a stirrer will help eliminate thermal lag. Since a thermocouple is basically a point
measuring device, placing more than one thermocouple in parallel can provide an average temperature readout and
produce better results in most air-heated processes.

Thermocouple

Type

Cable

Material

American

ANSI

British

German

DIN

French

NFE

Iron/Constantan