Installation manual

Series C Controller Configuration and Operation Manual
18-4  Athena Controls, Inc. 900M050U00
18.3 Preparing the Controller
To prepare the controller for calibration:
1. Make sure the access level in a 16C, 18C, or 25C is set to FACtFACt (factory).
Instructions for viewing and changing the access level controller are in Section
17.
2. Go to the InPInP (input menu) and select the new input type as described in 5.5.
(For 1ZC controllers, refer to the Multi-Comm User’s Guide or Using MODBUS
with Series C (1ZC, 16C, 18C, and 25C) Controllers.) Be sure to press the
key when the new input type is on display, so that the change is written to the
controller’s database.
3. In the case of linear input types, also use the SCL.LSCL.L and SCL.HSCL.H (scaling low and
scaling high) parameters (in the input menu) to specify the PV represented by the
lowest possible linear input signal and the PV represented by the highest
possible linear input signal.
4. Remove power from the controller and disconnect all output wiring.
5. Disconnect the input wiring.
6. Attach an appropriate calibrator (or precision resistor representing the calibration
low process value) to the input terminals. (Refer to 18.2 to determine the type of
device to be used to calibrate for the input type you have selected.)
7. Power up the controller and put it in standby mode. Allow the controller to warm
up for fifteen minutes after you have attached the calibrator (or precision resistor
for the low calibration).
After the fifteen minute warm-up, you are ready to proceed with the calibration as
described in 18.4.