Watlow SD Series - Page 32

Watlow Series SD • 30 • Chapter 5 Setup
Display Parameter Name
Description
Settings Range
(Integer values for Modbus in
parenthesis.)
Default Modbus*
(less 40,001
offset)
Read/Write
Appears if:
[r1;CO]
[r1.CO]
Output 1 Retransmit Offset
Set the high scale for the process
output.
-999.0 to 999.0 (-999000
to 999000)
0 *310, 311
R/W
Output 1 is a process
output (SD_ _ - _ _ _ F
- _ _ _ _ ) and [Ot`1] is
set to [rmt] .
[Ot`2]
[Ot 2]
Output 2 Function
Set Output 2 function.
[`OFF] Off (0)
[Pr;AL] Process Alarm (1)
[dE;AL] Deviation Alarm
(2)
[hEAt] Heat Control (3)
[CooL] Cool Control (4)
[E;out] Event (5)***
[`OFF] (0)
167 R/W Output 2 is installed and
is not a communications
output.
[Ctr2]
[Ctr2]
Control Method 2
Set Output 2 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)
168 R/W
[Ot`2] is set to [hEAt]
or [CooL] and output
type is SD_ _-_ _ C _-_
_ _ _ or SD_ _-_ _ K _ -_
_ _ _.
[Ftb2]
[Ftb2]
Fixed Time Base 2 (Cycle
Time)
Set the time base for Fixed Time
Base Control.
1.0 to 60.0 seconds if
Output 2 is mechanical
relay (1000 to 60000)
0.1 to 60.0 seconds if Out-
put 2 is not a mechani-
cal relay (100 to 60000)
20.0 (mech.
relay)
5.0 (solid-
state
relay)
1.0
(switched
dc)
*169, 170
R/W
[Ot`2] is set to [hEAt]
or [CooL], and [Ctr2] is
[`Ftb].
[PL`2]
[PL 2]
Power Limit 2
Set maximum power output for
a control output.
0.0 to 100.0% power (000
to 10000)
(Two decimal places im-
plied for Modbus.)
100.0% 171 R/W
[Ot`2] is set to [hEAt]
or [CooL].
[PSL2]
[PSL2]
Output Power Scale Low 2
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% 172 R/W
[Ot`2] is set to [hEAt]
or [CooL], [Ctr2] is set
to [`Ftb] and Output 2
is not a communications
output. (not SD_ _ - _ _
U _ - _ _ _ _ )
[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% (000 to
10000)
(Two decimal places im-
plied for Modbus.)
100.0% 173 R/W
[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 Non-linear Function 2
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)
174 R/W
[Ot`2] is set to [hEAt]
or [CooL] .
[Ot`3]
[Ot 3]
Output 3 Function
Set Output 3 function.
[`OFF] Off (0)
[Pr;AL] Process Alarm (1)
[dE;AL] Deviation Alarm (2)
[hEAt] Heat Control (3)
[CooL] Cool Control (4)
[E;out] Event (5)***
[rmt] Retransmit (6)
[`OFF] (0)
178 R/W Output 3 is installed. Ac-
tive only if Output 3 is a
process output (SD_ _ - _
_ _F - _ _ _ _)
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-_ _ _ _- _ _ _ _ ).