Watlow Series SD31 PID with Optional Countdown Timer - Manual (Page 26)

Wa t l o w S e r i e s S D 3 1
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C h a p t e r 5 S e t u p
Display Parameter Name
Description
Settings Range
(Integer values for Modbus
in parentheses.)
Default Modbus*
(less 40,001
offset)
Read/Write
Appears if:
Note: Some values will be rounded off to fit in the four-character display. Full values can be read with 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.
Caution: Writing to registers continuously, such as ramping set points via comms, will damage the SD31 EEPROM memory. See page 59.
[Ctr1]
[Ctr1] Control Method 1
Set output 1 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) 144 R/W [Ot`1] is set to [hEAt]
or
[CooL] and output
type is SD _ _ - _ C _ _ - _
_ _ _ or SD _ _ - _ K _ _ -
_ _ _ _ .
[Ftb1]
[Ftb1] Fixed Time Base 1 (Cycle Time)
Set the time base for Fixed Time Base
Control.
1.0 to 60.0 seconds if Out-
put 1 is a mechanical relay
(1000 to 60000)
0.1 to 60.0 seconds if Out-
put 1 is not a mechanical
relay
(100 to 60000)
20.0: mech.
relay
5.0: solid-
state relay
1.0: switched
dc
*145, 146
R/W [Ot`1] is set to [hEAt]
or
[CooL], [Ctr1] is set
to [`Ftb] and Output 1
is not a process output.
(not SD_ _ - _ F _ _ -
_ _ _ _ )
[PL`1]
[PL 1] Power Limit 1
Set the maximum power output for a con-
trol output
0.0 to 100.0% power
(000 to 10000)
(Two decimal places implied
for Modbus.) 100.0% 160 R/W [Ot`1] is set to [hEAt]
or
[CooL].
[PsL1]
[PSL1] Output Power Scale Low 1
Set the low end of the range within which
the output will scale.
0.0 to 100.0%
(000 to 10000)
(Two decimal places implied
for Modbus.) 0% 161 R/W [Ot`1] is set to [hEAt]
or
[CooL], [Ctr1] is set
to [`Ftb] and Output 1
is not a process output.
(not SD_ _ - _ F _ _ -
_ _ _ _ )
[PSH1]
[PSH1] Output Power Scale High 1
Set the high end of the range within
which the output will scale.
0.0 to 100.0%
(000 to 10000)
(Two decimal places implied
for Modbus.) 100% 162 R/W [Ot`1] is set to [hEAt]
or
[CooL], [Ctr1] is set
to [`Ftb] and Output 1
is not a process output.
(not SD_ _ - _ F _ _ -
_ _ _ _ )
[nLF1]
[nLF1] Output Nonlinear Function 1
Select a nonlinear output curve to match
the response of your system.
[`OFF] off (0)
[Cru1] curve 1 (1)
[Cru2] curve 2 (2) [`OFF] (0) 163 R/W [Ot`1] is set to [hEAt]
or
[CooL].
[AO1;U]
[AO1.U] Analog Output 1 Units
Set the analog output units.
[`mA] milliamperes (0)
[uolt] volts (1) [`mA] (0) 147 R/W Output 1 is a process
output.
(SD_ _ - _ F _ _ - _ _ _ _ )
[O1;Lo]
[O1.Lo] Analog Output 1 Scale Low
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
*148, 149
R/W (mA)
*152, 153
R/W (V)
Output 1 is a process
output.
(SD_ _ - _ F _ _ - _ _ _ _ )
[O1;hi]
[O1.hi] Analog Output 1 Scale High
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
*150, 151
R/W (mA)
*154, 155
R/W (V)
Output 1 is a process
output.
(SD_ _ - _ F _ _ - _ _ _ _ )
[r1;So]
[r1.So] Output 1 Retransmit Source
Set the control variable that the retrans-
mit signal represents.
[Proc] Process Value (0)
[~~SP] Set Point (1) [Proc] (0) 305 R/W Output 1 is a process
output
(SD_ _ - _ _ _ F - _
_ _ _ ) and [Ot`1] is set
to [rmt] .
[r1;lo]
[r1.Lo] Output 1 Retransmit Low Scale
Set the low scale for the retransmit
output.
-1999.0 to 9999.0
(-1999000 to 9999000) 0 *306, 307
R/W Output 1 is a process
output
(SD_ _ - _ _ _ F - _
_ _ _ ) and [Ot`1] is set
to [rmt] .