Chromalox 1604 User Manual

12
The initial and full scale values determine the input
span which is used by the PID algorithm, the
SMART and the alarm functions.
NOTE: the minimum input span (S = P4 - P3), in
absolute value, should be set as follows:
For linear inputs, S
> 100 units.
For TC input with °C readout, S
> 300 °C.
For TC input with °F readout, S
> 550 °F.
For RTD input with °C readout, S
> 100 °C.
For RTD input with °F readout, S
> 200 °F.
P5 = Output 1 type
rEL = Relay [the cycle time (Cy1) will be forced to
15 s]
SSr = SSR [the cycle time (Cy1) will be forced to
4 s]
P6 = Output 1 action.
This parameter is skipped if P7 = 4
rEV = Reverse action (Heating action)
dir = Direct action (Cooling action)
P7 = Output 2 function.
0 = output not used.
1 = it is used as alarm 1 output and the alarm 1
is programmed as process alarm.
2 = it is used as alarm 1 output and the alarm 1 is
programmed as band alarm.
3 = it is used as alarm 1 output and the alarm 1 is
programmed as deviation alarm.
4 = it is used as second control output (Cooling
output).
NOTE: setting P7 = 4, the P6 parameter is forced
to "rEV".
P8 = Cooling media.
Available only when P7 = 4
AIr = Air is used as cooling media.
OIL = Oil is used as cooling media.
H2O = Direct water is used as cooling media.
Changing P8 parameter, the instrument forces the
cycle time and relative cooling gain parameter to the
default value related with the chosen cooling media
When P8 = AIr - Cy2 = 10 s and rC = 1.00
P8 = OIL - Cy2 = 4 s and rC = 0.80
P8 = H2O - Cy2 = 2 and rC = 0.40
P9 = Alarm 1 operating mode
Available only when P7 is equal to 1, 2 or 3.
H.A. = High alarm (outside for band
alarm) with automatic reset.
L.A. = Low alarm (inside for band alarm) with
automatic reset.
H.L. = High alarm (outside band) with manual
reset (latched).
L.L. = low alarm (inside band) with manual reset
(latched).
P10 = Option feature ( see also "Display
function" and "OUT 1 failure detection")
OFF = No option
SP2 = Digital input for SP / SP2 selection.
n.O. = Set P10 to n.O. when the load is
REVERSE ACTION DIRECT ACTION
t
Input
t
Output
t
Input
t
Output
1604-1-BC.p65 5/16/00, 10:25 AM12

Chromalox 1604 Specifications

General

Brand	Chromalox
Model	1604
Category	Temperature Controller
Language	English