Chromalox 1603 User's Manual 9
P6 = Output 2 Operative Mode
P6 is available only when P5 is different from 0.
When P5 = 1, 2, or 3:
H.A. = high alarm (outside boand) with automatic reset
L.A. = low alarm (inside band) with automatic reset
H.L. = high alarm (outside band) with manual reset
L.L = low alarm (inside band) with manual reset
When p5 = 4, the selections H.A. and L.A. are controller
failure indicator alarms with automatic reset. The H.L.
and L.L. selections are controller failure indicator alarms
with manual reset.
When P5 = 5, this parameter selects the cooling medium:
AIr= Air
OIL = Oil
H
2
0 = Water
Note: Different set of cooling medium produces the
automatic modification of the relative cooling gain and of
the cooling cycle time.
P7 = Alarm Action
Present only when P5 is different from 0 or 5.
r = reverse (relay de-energized in alarm condition)
d = direct (relay energized in alarm condition)
P8 = Alarm Inhibit
Present only when P5 is different from 0,4 or 5.
OFF = Inhibit disabled
ON = Inhibit enabled
Note: If the alarm is programmed as band or deviation
alarm, this function disables the alarm condition after a
setpoint change or at the controller startup until the
process variable passes the alarm setpoint plus or minus
hysteresis. If the alarm is programmed as a process alarm,
this function disables the alarm condition at controller
startup until the process variable passes the alarm setpoint
plus hysteresis.
P9 = OFFSET Applied to the Measured Temperature
This OFFSET is applied along the whole range.
When P1 = 5 P9 is programmable from -19.9 to
19.9 °C.
When P1 ≠ 5 P9 is programmable from -199 to
199 °C or °F.
P10 = Threshold of the “Soft Start” Function
Enter the Threshold value, in °C or °F, for the automatic
start of the “Soft Start” function (limiting output power).
If the unit powers up below the Threshold value, the
“Soft Start” function is enabled and limits the power
output to “OLH” for “tOL” minutes. “OLH” and “tOL”
are set in the Operator Mode.
P6 C (cycle time) rC (cool gain)
Air 10(s) 1
Oil 4(s) 0.8
H
2
O 2(s) 0.4