Watlow Series SD31 PID with Optional Countdown Timer - Manual (Page 35)

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 6 O p e r a t i o n s
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.
Note: Some values will be rounded off to fit in the four-character display. Full values can be read with Modbus.
* Low numbers contain the two lower bytes; high numbers contain the two higher bytes of the four-byte integer.
Decimal precision is set in another parameter.
[`Sec]
[SEc]
Countdown Time - Seconds
Set the number of seconds remaining for
the countdown time.
0 to 59
seconds
(0 to 59000) 0 377 R Timer model only,
SD31-XXXX-XTXX.
[`Ot1] or [`Ot2]is set
to
[tim].
[Ct;SP]
[Ct.SP]
Closed Loop Timer Set Point
Set the set point to be used during the
timer sequence if the controller is in the
auto mode.
Set Point Low Limit
[SP;Lo] to Set Point High
Limit
[SP;hi]
[`Off] Stop controlling to
SP (-200000001)
75 *404, 405
R/W Timer model only,
SD31-XXXX-XTXX.
[`Ot1] or [`Ot2]is set
to
[tim].
[Ot;SP]
[Ot.SP] Open Loop Timer Set Point
Set the power level to be used during the
timer sequence if the controller is in the
manual mode.
-100.0 to 0.0% if any output
is set to cool; 0.0 to 100.0%
if any output is set to heat
(-10000 to 0000, 0000 to
10000. Two decimal places
implied for Modbus.) 0 406 R/W Timer model only,
SD31-XXXX-XTXX.
[`Ot1] or [`Ot2]is set
to
[tim].
[`rdy
[ rdY]
Ready Band
Set the deviation band, in degrees from
set point, that would be considered a
ready condition.
1-9999
degrees
(1000 - 9999000) 10
(10000) *395, 396
R/W Timer model only,
SD31-XXXX-XTXX.
[ti;St] is set to [~rdy]
or [
rdy;A].
[CC;SP]
[CC.SP] Closed Loop Control Set Point
Set the control set point to be used when
the timer is not active and the controller
is in the auto mode.
Set Point Low Limit
[SP;Lo] to Set Point High
Limit
[SP;hi]
[`Off] Stop controlling to
SP (-200000001)
75 *27, 28
R/W Control mode is
[auto] and there is no
input error.
[OC;SP]
[OC.SP] Open Loop Control Set Point
Show the current open loop (manual)
control set point.
The % indicator light is on when the con-
troller is in open loop (manual control).
-100.0 to 0.0% if any output
is set to cool; 0.0 to 100.0%
if any output is set to heat
(-10000 to 0000, 0000 to
10000. Two decimal places
implied for Modbus.) 0.0% 26 R/W Control mode is
[Man] and there is
no input error.