Installation manual

900M050U00  Athena Controls, Inc. 20-1

20. Frequently Asked Questions

20.1 Introduction

You can reach our technical support team by phoning 1-800-782-6776 (from the United

States) or 610-828-2490 (from anywhere in the world).

Before you call, please look at this section to see if your question is covered here. If you

do call for technical assistance, be ready to supply the following information:

• complete model number of controller

• symptoms of the problem

• unusual events, if any, that preceded the problem

• remedies you have already tried

20.2 How do I change from thermocouple to RTD (or vice

versa)?

To change the type of sensor used (or to switch to a linear input), go to the input menu

and change the input type specified (see 5.5). If you change to a linear input type, you

can use input menu parameters to scale the input.

Unless the controller was ordered with the “calibrate all” choice, you must also re-

calibrate the controller for the new sensor type. (see Section 18).

Because all temperature inputs (RTD and thermocouple) require the same input jumper

settings, you do not have to change JMP01 or JMP02 on the processor board. However,

if you change from a temperature input to a voltage signal above 100 mV or to a current

input, you must change the jumper settings (see 5.3).

To determine whether the controller in hand was calibrated at the factory for all input types, check the

model number on the label on the controller. The meaning of each character in the model number is in

the installation manual supplied with the controller.