Control And Configuration Parameters; Appendix A - Honeywell R7426B Product Data

R7426A,B,C TEMPERATURE CONTROLLER

APPENDIX A

Control and Configuration Parameters

The controller includes two groups of settings (I and II) for
control and configuration parameters. These settings are
automatically selected during programming. See Tables 13
and 14.
R742
6 Parameter
A B C # Name
x x x P.01 W1
x x x P.02 W
lim
x x x P.03 W
comp
x x x P.04 Wi
x x x P.05 Su
x x x P.06 W
cas
x x x P.07 R
cas
x x x P.08 Xp1
x x x P.09 Xp2
x x P.10 Xpc
x x P.11 Xph
x x x P.12 tr1
b
x x x P.13 tr2
b
x x P.14 MINPOS
x x x P.15 O
start
x x x P.16 SOFFS
x x x P.17 I01Cal
x x x P.18 I02Cal
x x x P.19 I03Cal
x x P.20 RetOffs
x x P.21 RuntimeO1 Actuator run time (O1)
x P.22 RuntimeO3 Actuator run time (O3)
x P.23 RuntimeO2 Actuator run time (O2)
x x x P.24 NightLow
x x x P.25 NightHigh
x x x P.26 NOFFS
a
Unless otherwise noted.
b
If tr is greater than 120 sec, resolution is 30 sec; if tr is less than 120 sec, resolution is 10 sec.
c
Reset times are for P+I control.
63-2564—1
Table 13. Control Parameters.
Description
I01 main setpoint
I02 limit setpoint (low or high. See C.13)
I03 compensation changeover point
Winter reset
Summer reset
Submaster or cascade setpoint
Cascade reset span adjustment
I01 Throttling range (main control loop)
I02 Throttling range (cascade or limit control
loop)
Cooling throttling range (sequence control)
Heating throttling range (sequence control)
Reset time (main control loop)
Reset time (cascade or limit control loop)
Minimum position (damper actuators)
Mid-range shift start point (O1)
Main setpoint offset (unoccupied mode)
Calibration of sensor I01
Calibration of sensor I02
Calibration of temperature sensor I03
Return air offset to simulate return air
conditioning
Night temperature low limit
Night temperature high limit
Main setpoint offset (night mode)
NOTES: Parameter Ctrltyp determines the setting:
— Ctrltyp Lo selects setting I.
— Ctrltyp Hi1 and Hi2 select setting II.
Setting I / Setting II
Low
32 130 / 260
40 130 / 260
20 110
-350 +350
-100 +100
Off, 50 130/260
0 70
1 70
1 70
Off, 1 70
1 70
Off, 20 minutes
c
20 sec
c
0 50
-40 +40
0 20
-40 +40
Off, 0 10
6 180
Off, 50 70
Off, 70 100
0 60
14
High Default Resolution Unit
70 / 160 1
60 / 200
70 1
0 2
0 1
70/Off 1
20
4/20
20
6
12
Off 10 sec /
0.5 min
20 1
0 1
4 / 10 0.1
0
Off
60 1
Off 1
10 / 40 0.1
a
°F
°F
%
°F
sec /
min
%
°F
sec
°F