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Watlow Series SD Limit User Manual

Page 28

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Wa t l o w S e r i e s S D L i m i t

26

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. All temperature parame-
ters are in °F through 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.

Output 1 Function

Set Output 1 function.

[LIM] Limit (2)

[LIM] (2)

143 R

Always active.

Output 1 Limit Sides

Selects Output 1 limit active sides.

[both] (0) (both high and
low sides active)
[high] (1) (high side ac-
tive)
[low] (2) (low side active)

[Ftr;E] is not set to
[`OFF].

[both] (0)

111 R/W

Always active.

Limit 1 Hysteresis

Set the hysteresis for the limit. This deter-
mines how far into the safe region the in-
put needs to move before the limit can be
cleared.

0.0 to 999.0
(0000 to 999000)

1.0

*106, 107
R/W

Always active.

Output 2 Function

Set Output 2 function.

[`OFF] Off (0)
[Pr;;AL] Process Alarm (1)
[LIM] Limit (2)

[`OFF] (0)

164 R/W

Output 2 is installed
and is not a communica-
tions output.

0.0 to 60.0 seconds
(0000 to 60000)

Set Point High Limit

Set the high range for the set point.

[rg;Lo] to max. operating
range (of sensor): if

{`sen}

is set to

{``tc}

[SP;Lo] +0.100 to 1472: if
{`sen} is set to {`rtd}

[SP;Lo] +0.001 to 9999: if
{`sen} is set to [`MA],
[uolt], or {`Mu].
(Set precision with

[P;dEC],

Process Decimal Places)

Max. operat-
ing range (J
type):
{``tc}

1472:

{`rtd]

999:

[`MA],

[uolt], and
[`Mu].

*233, 234
R/W (ther-
mocouple)

*237, 238
R/W (RTD)

*241, 242
R/W (mA
or V)

Always active.

Calibration Offset

Offset the input reading.

-999 to 999
(-999000 to 999000)

0

[sP;hi]
[SP.hi]

Filter Value

Set the input filter value.

0.0

*87, 88
R/W

*85, 86
R/W

Always appears.

Input Filter

Select filtering action.

[`OFF] (0) (no filtering)
[DiSP] (1) (filter only the
display value)
[Cont] (2) (filter the
control input values)
[both] (3) (filter the
display and control input
values)

[`OFF] (0)

89 R/W

Always active.

[Ot`1]
[Ot 1]

[Lsd1]
[LSd1]

[hyS1]
[hyS1]

[Ot`2]
[ Ot2]

[`Cal]

[ CAL]

[FLtr]
[FLtr]

[Ftr;E]
[Ftr.E]

[Lsd2]
[LSd2]

Output 2 Limit Sides

Selects Output 2 limit

[both] (0) (both high and
low sides active)
[high] (1) (high side active)
[low] (2) (low side active)

[both] (0)

126 R/W

[Ot`2] is set to [LIM].

0.0 to 999.0
(0000 to 999000)

Output 2 Hysteresis

Set the hysteresis for the output. This de-
termines how far into the safe region the
input needs to move before the output
can be cleared.

1.0

*121, 122
R/W

[Ot`2] is set to [Pr;;AL]
or

[LIM].

[hyS2]
[hyS2]

Output 2 Logic

Select the output condition in the alarm
state.

[AL`C] closed on alarm (0)
[AL`O] open on alarm (1)

[AL`C] (0)

169 R/W

[Ot`2] is set to [Pr;;AL].

[Lgc2]
[Lgc2]