CLS200 Series User’s Guide
Chapter 4: Setup
88
Sensor Fail Heat or Cool Output
When a sensor fail alarm occurs or when the
OUTPUT OVERRIDE DIG INPUT
becomes active on
a loop that is in automatic control, that loop goes to manual control at the percent power output set
here.
ALARM
01 SENSOR FAIL
HT OUTPUT ? 0%
Selectable values:
0
to
100
%.
NOTE!
When a sensor fails or the override input is detected, both the heat and cool
outputs are set to their fail settings. In most applications,
SENSOR FAIL HT OUTPUT
and
SENSOR FAIL CL OUTPUT
should be set to 0%.
WARNING!
Do not rely solely on the sensor fail alarm to adjust the output in the event
of a sensor failure. If the loop is in manual control when a failed sensor alarm occurs, the
output is not adjusted. Install independent external safety devices that will shut down the
system if a failure occurs.
Heat or Cool Thermocouple Break Output Average
If you set this parameter to
ON
and a thermocouple break occurs, a loop set to automatic control
status will go to manual mode at a percentage equal to the average output prior to the break.
ALARM
01 HEAT T/C BRK
OUT AVG ? OFF
Selectable range:
ON
or
OFF.
Heat or Cool Linearity
Select an output curve. For a nonlinear process, select
CURVE 1
or
CURVE 2
.
ALARM
01 HEAT OUTPUT?
LINEAR
Selectable values:
CURVE 1
,
CURVE 2
, or
LINEAR
. Refer to
Figure 4.4
.
