Watlow CPC400 - Manual (Page 176)

Chapter 6: Troubleshooting and Reconfiguring CPC400 Series User’s Guide
162 Watlow Anafaze Doc. 0600-2900-2000
Scaling and Calibration
The controller provides offset calibration for thermocouple,
RTD, and other fixed ranges, and offset and span (gain) cal-
ibration for process and pulse inputs. In order to scale the
input signal, you must:
1. Install appropriate scaling resistors. (Contact the Cus-
tomer Service Department at Watlow Anafaze for
more information about installing scaling resistors.)
2. Enter the input range at the Disp format parameter in
the Input menu. The smallest possible range is -0.9999
to 3.0000; the largest possible range is -9999 to 30000.
3. Enter the appropriate scaling values for your process.
See Setting Up a Process or Pulse Input on page 58.
Configuring Serial DAC Outputs
On the Serial DAC, the voltage and current output is jump-
er-selectable. Refer to Figure 6.7. Configure the jumpers as
indicated on the Serial DAC label.
Figure 6.7 Serial DAC Voltage and Current
Jumper Positions
+5V IN
COM IN
CLK IN
DATA
IN
FLASHING
=R
UNNING
+ O
UT
- OU
T
PIN
: 1
2
3 4
5
6
OUTPUT SELECT
CURRENT
VO
LT
AG
E
{
{
AFAZE
SERIAL D
AC
Jumper