Watlow Series SD PID Profiling Controller - Manual (Page 33)

Wa t l o w S e r i e s S D • 3 1 • C h a p t e r 5 S e t u p
Display Parameter Name
Description
Settings Range
(Integer values for Modbus in
parenthesis.)
Default Modbus*
(less 40,001
offset)
Read/Write
Appears if:
[Ctr3]
[Ctr3] Control Method 3
Set Output 3 control type. This
parameter is only used with PID
control, but can be set anytime.
[`Ftb] Fixed Time Base
(0)
[Urtb] Variable Time
Base (1)
[`Ftb] (0) 179 R/W [Ot`3] is set to [hEAt]
or
[CooL] and output
type is SD_ _-_ _ _ C -_
_ _ _ or SD_ _-_ _ _ K -_
_ _ _.
[Ftb3]
[Ftb3] Fixed Time Base 3 (Cycle
Time)
Set the time base for Fixed Time
Base Control.
1.0 to 60.0 seconds if Out-
put 3 is a mechanical
relay (1000 to 60000)
0.1 to 60.0 seconds if Out-
put 3 is not a mechani-
cal relay (100 to 60000)
20.0 (mech.
relay)
5.0 (solid-
state
relay)
1.0
(switched
dc)
*180, 181
R/W
[Ot`3] is set to [hEAt]
or
[CooL], and [Ctr3]
is set to [`Ftb], and
Output 3 is not a process
output. (not SD_ _ - _ _ _
F
- _ _ _ _ )
[PL`3]
[ PL3] Power Limit 3
Set the maximum power output
for a control output.
0.0 to 100.0% (000 to
10000)
(Two decimal places im-
plied for Modbus.)
100.0% 195 R/W [Ot`3] is set to [hEAt]
or
[CooL].
[PsL3]
[PSL3] Output Power Scale Low 3
Set the low end of the range
within which the output will
scale.
0.0 to 100.0% (000 to
10000)
(Two decimal places im-
plied for Modbus.)
0% 196 R/W [Ot`3] is set to [hEAt]
or
[CooL], [Ctr3] is set
to [`Ftb] and Output 3
is not a process output.
(not SD_ _ - _ _ _ F -_
_ _ _ )
[PSh3]
[PSh3] Output Power Scale High 3
Set the high end of the range
within which the output will
scale
0.0 to 100.0% (000 to
10000)
(Two decimal places im-
plied for Modbus.)
100.0% 197 R/W [Ot`3] is set to [hEAt]
or
[CooL], [Ctr3] is set
to [`Ftb] and Output 3
is not a process output
(not SD_ _ - _ _ _ F -_ _
_ _ ).
[nLF3]
[nLF3] Output Non-linear Function 3
Select a non-linear output curve
to match the response of your
system.
[`OFF] Off (0)
[Cru1] curve 1 (1)
[Cru2] curve 2 (2) [`OFF] (0) 198 R/W [Ot`3] is set to [hEAt]
or
[CooL].
[AO3;U]
[AO3.U] Analog Output 3 Units
Set the analog process output
units.
[`mA] milliamperes (0)
[uolt] volts (1) [`mA] (0) 182 R/W Output 3 is a process
output. (SD_ _ - _ _ _ F
- _ _ _ _ )
[O3;Lo]
[O3.lo] Output 3 Low Scale
Set the low scale for the process
output.
0.00 to 20.00 mA if output
is set to mA (0000 to
20000)
0.00 to 10.00V if output
is set to volts (0000 to
10000)
4.00 mA
0.00V
*183, 184
R/W
(mA)
*187, 188
R/W (V)
Output 3 is a process
output. (SD_ _ - _ _ _ F
- _ _ _ _ )
[O3;hi]
[O3.hi] Output 3 High Scale
Set the high scale for the process
output.
0.00 to 20.00 mA if output
is set to mA (0000 to
20000)
0.00 to 10.00V if output
is set to volts (0000 to
10000)
20.00 mA
10.00V
*185, 186
R/W
(mA)
*189, 190
R/W (V)
Output 3 is a process
output. (SD_ _ - _ _ _ F
- _ _ _ _ )
[r3;So]
[r3.So] Output 3 Retransmit Source
Set the control variable that the
retransmit signal represents.
[Proc] Process Value (0)
[~~SP] Set Point (1) [Proc] (0) 315 R/W Output 3 is a process
output (SD_ _ - _ _ _ F
- _ _ _ _ ) and
[Ot`3] is
set to [rmt].
Note: Some values will be rounded off to fit in the four-character display. Full values can be read with Modbus. All temperature pa-
rameters through Modbus are in °F, by default. Writing to register 18 will toggle between °F and °C.
* 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-_ _ _ _- _ _ _ _ ).