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RP920A,B,C,D MODULAR PNEUMATIC CONTROLLERS
4
2
3
GAGE PLUG
PRIMARY SENSOR
2
3
GAGE PORT
Connector
Block Module
BLP TEST TAP
Setpoint
Module
W 1
%
5
Proportional
Module
DIR.
RP920A
Connector
Block Module
SENSOR
SUPPLY OPEN
SWITCHPLATE
POSITION INDICATOR
OPEN POSITION
BLOCKED POSITION
SENSOR SUPPLY BLOCKED
(EXTERNAL RESTRICTOR)
Fig. 3. Primary sensor air supply.
Gage Function and Integral Action Cut-off
Adjustment (RP920C and D)
The position of the gasket located under the switch block
module (Fig. 2) determines the function of the field-installed
Switch Block Module gage and enables/disables the integral
action cut-off function. See Table 1 for factory and field
settings.
95-7392EF
1 – MAIN
2 – BRANCH
3 – PRIMARY
8
9
SENSOR
1
4 – VENT
8 – CLOSED/REMOTE
SETPOINT
9 – CPA
1
REV.
RP920A
Fig. 2. Module and port Locations.
2
3
1
SCREW
SWITCHPLATE
4
8
2
3
PRIMARY SENSOR
GAGE PORT
2
3
Connector
Block Module
BLP TEST TAP
Setpoint
Module
W 1
PROPORTIONAL
BAND ADJUSTMENT
%
KNOB
5
Proportional
Module
DIR.
REV.
RP920B,C,D
RP920B,D ONLY.
1
RP920C,D ONLY.
2
CAPTIVE SCREW (4)
5
DIR. REV.
C5102
DIRECT ACTING
Fig. 4. Changing controller action.
Table 1. Switch Block Gasket Position.
Model
RP920B
RP920C
RP920D
a
Shipped from the factory in this position.
B = Branch line gage.
C = Compensation sensor gage.
+ = Integral action cut-off enabled.
2
1 – MAIN
2 – BRANCH
3 – PRIMARY
9
7
5
6
SENSOR
1
4 – VENT
5 – COMPENSATION
SENSOR
6 – VENT
7 – VENT
8 – CLOSED/REMOTE
SETPOINT
9 – CPA
COMPENSATION SENSOR
GAGE
OR BRANCH GAGE PORT
PLUGS
1
7
6
5
COMPENSATION STARTPOINT
ADJUSTMENT KNOB
Switch
Block
+
B
Module
+
C
B
C
T
R
Min
0.5
20
15
Integral
10
7
Module
5
4
1
3
1.5
2
250
Compensation
Module
POS. NEG.
MODULE KNOB SCREWS
RP920D
(DO NOT LOOSEN)
PROPORTIONAL MODULE
DO NOT
ADJUST
SCREW
NOTE LOCATION
OF NOTCH
CONTROLLER
LABEL
REVERSE ACTING
a
Field Setting
B
C
B
B+
B
C, C+, B+
1
2
M17584
5
DIR. REV.
C5103
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