Setpoint (W1) Adjustment; Remote Setpoint; Proportional Band (Xp) Adjustment - Honeywell RP920A Installation Instructions Manual

CAPTIVE SCREW (4)
250
DO NOT
ADJUST SCREW
POS.NEG.
NEGATIVE COMP. (FACTORY SET)
Fig. 5. Changing from negative to positive compensation.
1. Check the gasket tab position (Fig. 6, front view).
2. Loosen the three switch block module screws and
remove the module.
3. Remove the gasket and note the letters (B, B+, C, C+)
embossed on the module back.
4. Rotate and/or flip the gasket until the gasket position
matches the functions desired (Fig. 6, back view).
NOTE: With the correct gasket position, only the
desired letter shows.
5. Install the gasket on the switch block module back.
6. Reinstall the module, and tighten the three screws.
7. If used, connect the integral action cut-off switching
components to ports 6 and 7.
GASKET SHOWN IN C POSTION. B, B+, AND C+ LEGENDS
CANNOT BE SEEN WITH GASKET IN THE C POSTION,
BUT ARE ILLUSTRATED HERE TO DISLPLAY LOCATION.
CAPTIVE SCREW (3)
7 6 5
Switch Block
+
B
+
C
B
C
FRONT
Fig. 6. Integral action cut-off and gage
function gasket position.
Setpoint (W ) Adjustment
1
The setpoint knob is embossed with a 0 to 100 percent scale
which correlates with the values in Table 3 (see Appendix).
Scaleplate overlays are included to directly match various
sensor ranges.
Three methods of controlling setpoint (W
LOCAL SETPOINT
Adjust setpoint (W ) directly on the controller.
1
COMPENSATION MODULE
NOTE
POS.NEG.
LOCATION
OF NOTCH
POSITIVE COMP.
C5104
B
B
+
+
B
+
C
B
C
GASKET TAB
IN C POSITION
) are available:
1
RP920A,B,C,D MODULAR PNEUMATIC CONTROLLERS
Adjustments:
1. If using a scaleplate overlay, insert the overlay between
the setpoint knob and the transparent overlay retainer.
Note positions of the key and non-coded scaleplate
overlay notch (Fig. 7).
2. Adjust the setpoint (W
using the setpoint knob.
3. If the control point deviates excessively from the
setpoint (W
consideration.

REMOTE SETPOINT

Setpoint (W ) is controlled from 0 to 100 percent of the
1
primary sensor span from a remote 3 to 15 psi (21 to 103 kPa)
bleed-type signal.
Adjustments:
1. Adjust the setpoint knob to 100 percent (Fig. 7) or to
the maximum remote setpoint limit to be applied.
2. Install the 14003755-001 Barb Fitting and O-ring to
port 8 and connect to a bleed-type remote setpoint
device (e.g., SP970) and a remote setpoint gage.
CONTROL POINT ADJUSTMENT (CPA)—AVAILABLE ON SPECIFIC
MODELS
Local (baseline) setpoint (W
and can be varied ±15 percent of the primary sensor span
from a remote 3 to 15 psi (21 to 103 kPa) signal.
Adjustments:
1. Pipe CPA to port 9.
2. If used, select the proper scaleplate overlay.
3. Note the position of key on the setpoint knob and the
non-coded scaleplate overlay notch (Fig. 7) for
controllers with U.S.A. labels. Controllers (RP920B,C,D)
with German labels must use "R" coded scaleplate
overlay notch when using a CPA device.
C
4. Insert the scaleplate overlay between the setpoint knob
C
and the transparent overlay retainer.
+
5. Adjust the setpoint (W
using the setpoint knob.
BACK
Proportional Band (X
C5105
Adjust the proportional band (Xp), according to the job
drawings, using the proportional module proportional band
adjustment knob (see Fig. 2).
CAUTION
Control Loss Hazard.
Loosening knob screws can induce controller
leaks.
Use CCT819 and Authority Setting Adjustment Tool or
a narrow, stiff-blade putty knife to rotate adjustment
knobs (Xp and Ac).
Authority (A ) Adjustment (RP920B and D only)
c
Adjust the authority (A
compensation module authority adjustment knob (see Fig. 2).
3
), according to the job drawings,
1
), calibrate, taking the throttling range into
1
) is adjusted on the controller
1
) according to the job drawings
1
) Adjustment
p
), according to the job drawings, with the
c
95-7392EF