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Operations page parameters, Pid set x (1 to 5)* (optional inner loop), Edit pid – Watlow Series F4P User Manual

Page 30: Autotune pid cascade, Autotune pid

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6 . 4

P a r a m e t e r s

Wa t l o w S e r i e s F 4 P

Note: For more information about how param-
eter settings affect the controller’s operation, see
the Features Chapter.

* None of the B parameters are active if both out-
puts are set to cool or heat.

Modbus

Register

Range

read/write

Conditions for

Parameter

Description

(Modbus Value)

Default

(I/O, Set)

Parameters to Appear

Operations Page Parameters

Active: Always.* Based on deci-

mal setting.

1A

1B

Set

500

550

[1]

510

560

[2]

520

570

[3]

530

580

[4]

540

590

[5]

r/w

25°F
14°C

0 to 30000
0.0 to 3000.0
0.00 to 300.00
0.000 to 30.000

(0 to 30000) in integer,
tenths, hundredths or
thousandths

Proportional Band x (A or

B)
Define the proportional
band for PID control.

Main > Operations > Edit PID > PID Set Channel 1 >

PID Set x (1 to 5)

PID Set x (1 to 5)* (Optional Inner Loop)

Main > Operations >

Edit PID

Edit PID

Active if Analog Input 3 Control

Type is set to Cascade.

Outer loop is Input Channel 3.

343
r/w

Tune Off (0)

Tune Off (0)
Outer Loop PID Set 1 (1)
Outer Loop PID Set 2 (2)
Outer Loop PID Set 3 (3)
Outer Loop PID Set 4 (4)
Outer Loop PID Set 5 (5)

Cascade Outer Loop

Select which PID pa-
rameters will be au-
tomatically tuned.

Active if Analog Input 3 Control

Type is set to Cascade.

Inner loop is Input Channel 1.

305
r/w

Tune Off (0)

Tune Off (0)
Inner Loop PID Set 1 (1)
Inner Loop PID Set 2 (2)
Inner Loop PID Set 3 (3)
Inner Loop PID Set 4 (4)
Inner Loop PID Set 5 (5)

Cascade Inner Loop

Select which PID pa-
rameters will be au-
tomatically tuned.

Main > Operations > Autotune PID >

Cascade

Autotune PID Cascade

Active if controller is in auto

(closed-loop) mode.

307
r/w

Off

Heat Only (0)
Cool Only (1)
Heat and Cool (3)

Autotune PID Type

Select which output to
autotune.

Active if controller is in auto

(closed loop) mode.

305
r/w

Tune Off (0)

Tune Off (0)
PID Set 1 (1)
PID Set 2 (2)
PID Set 3 (3)
PID Set 4 (4)
PID Set 5 (5)

Channel 1 Autotune

Select which PID pa-
rameters will be au-
tomatically
tuned.

Main > Operations >

Autotune PID

Autotune PID