Watlow Series SD31 ■ 26 ■ Chapter 5 Setup
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.
[PSH2]
[PSH2]
Output Power Scale High 2
Set the high end of the range within
which the output will scale.
0.0 to 100.0% 100.0%
[Ot`2]
is set to
[hEAt]
or
[CooL]
,
[Ctr2]
is set
to
[`Ftb]
and Output 2
is not a communications
output.
(not SD_ _ - _ _ U _ -
_ _ _ _ )
[nLF2]
[nLF2]
Output Nonlinear Function 2
Select a nonlinear output curve to match
the response of your system.
[`OFF]
off
[Cru1]
curve 1
[Cru2]
curve 2
[`OFF] [Ot`2]
is set to
[hEAt]
or
[CooL]
.
[ti;F2]
[ti.F2]
Output Timer Function 2
Select the states for a timer output during
the timing sequence.
[dL;On]
Delay On
[dL;OF]
Delay Off
[S9;On]
Signal On
[S9;OF]
Signal Off
[dL;OF]
Delay Off
Timer model only,
SD31-XXXX-XTXX.
[`Ot2]
is set to
[tim]
.
[S;M2]
[S.M2]
Signal Time Minutes 2
Set the time in minutes for which an out-
put will go to its signal state after the
countdown completes.
0 to 99
minutes
0 Timer model only,
SD31-XXXX-XTXX.
[`Ot2]
is set to
[tim]
.
[`S;S2]
[ S.S2]
Signal Time Seconds 2
Set the low end of the range within which
the output will scale.
0 to 59
seconds
0 Timer model only,
SD31-XXXX-XTXX.
[`Ot2]
is set to
[tim]
.
[hyS1]
[hyS1]
Alarm 1 Hysteresis
Set the hysteresis for an alarm. This de-
termines how far into the safe region the
input needs to move before the alarm can
be cleared.
0.0 to 999.0
(0000 to 999000)
1.0
*106, 107
R/W
[Ot`1]
is set to
[dE;AL]
or
[Pr;AL]
.
[Lgc1]
[Lgc1]
Alarm 1 Logic
Select the alarm output condition in the
alarm state.
[AL`C]
closed on alarm (0)
[AL`O]
open on alarm (1)
[AL`C]
(0)
164 R/W
[Ot`1]
is set to
[dE;AL]
or
[Pr;AL]
.
[LAt1]
[LAt1]
Alarm 1 Latching
Turn alarm latching on or off.
[nLAt]
off (0)
[`LAt]
on (1)
[nLAt]
(0)
108 R/W
[Ot`1]
is set to
[dE;AL]
or
[Pr;AL]
.
[SiL1]
[SiL1]
Alarm 1 Silencing
Turn alarm silencing on or off.
[`OFF]
off (0) - no silencing
[``On]
on (1) - silencing
[`OFF]
(0)
109 R/W
[Ot`1]
is set to
[dE;AL]
or
[Pr;AL]
.
[dSP1]
[dSP1]
Alarm 1 Message
Displays an alarm message when an
alarm is active.
[`OFF]
off (0) - no message
[``On]
on (1) - message
[``On]
(1)
110 R/W
[Ot`1]
is set to
[dE;AL]
or
[Pr;AL]
.
[hyS2]
[hyS2]
Alarm 2 Hysteresis
Set the hysteresis for an alarm. This de-
termines how far into the safe region the
input needs to move before the alarm can
be cleared.
0.0 to 999.0 1.0
[Ot`2]
is set to
[dE;AL]
or
[Pr;AL]
.
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