Omega

Section 3—Installation and Wiring

Sensor and Control

Type Selection

Switches

Set the CN 2110 controller’s configuration via mechanical dip switches, located on the bottom of the unit. Factory settings are J, TC, °F, and PI Control. Switches are easier to set before mounting.

To change the switch settings, first disconnect all wiring and power from the unit. Adjust switch settings as follows:

 

 

Setting

Factory

Switch

Function

Options

Setting

A

Thermocouple

J or K

J

B

Input Type

TC or RTD

TC

C

Temperature Units

°F or °C

°F

D

Control Type

ON-OFF or PI

PI

If input type is thermocouple, switch A selects either thermocouple type J or K.

Switch B selects input type thermocouple or RTD (resistance tempera- ture detector). Note: If RTD is selected, switch A is ignored.

Switch C selects temperature units °F or °C.

Switch D selects either PI (Proportional-Integral) or ON-OFFcontrol.

J

RTD

˚C

ONOF

K

TC

˚F

PI

J

RTD

˚C

ONOF

K

TC

˚F

PI

Figure 3.1

Default Dip Switch Settings

CN 2110

4

Section 3–Installation and Wiring

Page 8
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Chromalox CN2110 manual Installation and Wiring, Sensor and Control Type Selection Switches