User`s manual

Watlow Series SD ■ 37 ■ Chapter 6 Operations
Display Parameter Name
Description
Settings Range
(Integer values for Modbus
in parentheses.)
Default Modbus*
(less 40,001
offset)
Read/Write
Appears if:
Note: Parameters appear in the Operations Page only if activated from the Programming Page. See page 22 for Operations Page defaults.
Note: Some values will be rounded off to fit in the four-character display. Full values can be read with Modbus. All temperature parame-
ters are in °F through Modbus.
* Low register numbers contain the two higher bytes; high register numbers contain the two lower bytes of the four-byte integer. Decimal
precision is implied at three decimal places unless otherwise noted.
** Static set point version only (SD_C-_ _ _ _- _ _ _ _.)
*** Profiling version only (SD_R-_ _ _ _- _ _ _ _.).
**** This value multiplied by 100 equals the percent power.
[rA;Cl]
[rA.CL]
Rate Cool
Set the PID rate time in minutes for the
cool outputs.
0.00 to 9.99 minutes
(0000 to 99990)
0.00: disabled
0.00
*230, 231
R/W
At least one output is
set to [CooL], [Cl;m]
is set to [`PId], and
[Unit] is set to
[``US].
[dE;CL]
[dE.CL]
Derivative Cool
Set the PID derivative time in minutes
for the cool outputs.
0.00 to 9.99 minutes
(0000 to 99990)
0.00: disabled
0.00
*230, 231
R/W
At least one output is
set to [CooL], [CL;m]
is set to [`PId], and
[Unit] is set to
[``SI].
[dB;Cl]
[db.CL]
Dead Band Cool
An offset of the cooling proportional
band from the set point.
0 to 999
(0000 to 999000)
0
*281, 282
R/W
At least one output is
set to [Cool] and
[CL;m] is set to
[`PId].
[C;hyS]
[C.hyS]
Cool Hysteresis
Set the control switching hysteresis for
on/off control. This determines how far
into the “on” region the input needs to
move before the output actually turns
on.
1 to 999°F if [`Sen] is set
to [``tc] or [`rtd]
(1000 to 999000)
0.000 to 999.9 if [`Sen] is
set to [`ma] or [uolt]
(0000 to 999000)
1
1.000
*236, 237
R/W
*238, 239
R/W
At least one output is
set to [CooL] and
[CL;m] is set to
[on;oF].
[ProP]
[ProP]
Proportional Term
View the active proportional term for
PID diagnostics.
0.000 to 1.000****
(0000 to 1000)
NA
258 R
Any output is set to
[heat] or [Cool].
[``it]
[ it]
Integral Term
View the active integral term for PID di-
agnostics.
0.000 to 1.000****
(0000 to 1000)
NA
259 R
Any output is set to
[heat] or [Cool].
[``dE]
[ dE]
Derivative Term
View the active derivative term for PID
diagnostics.
0.000 to 1.000****
(0000 to 1000)
NA
260 R
Any output is set to
[heat] or [Cool].
[ent1]
[Ent1]
Event Output 1***
Set Event Output 1 to an on or off state.
[~off] (0) Output is off
[~~on] (1) Output is on
[~off] (0)
351 R/W
Profiling version only.
(SD_ R - _ _ _ _ - _ _ _ _ )
Output 1 is set to
[Ent1].
[ent2]
[Ent2]
Event Output 2***
Set Event Output 2 to an on or off state.
[~off] (0) Output is off
[~~on] (1) Output is on
[~off] (0)
352 R/W
Profiling version only.
(SD_ R - _ _ _ _ - _ _ _ _ )
Output 2 is set to
[Ent2].
[ent3]
[Ent3]
Event Output 3***
Set Event Output 3 to an on or off state.
[~off] (0) Output is off
[~~on] (1) Output is on
[~off] (0)
353 R/W
Profiling version only.
(SD_ R - _ _ _ _ - _ _ _ _ )
Output 3 is set to
[Ent3].