Honeywell R7426B Product Data

R7426A,B,C TEMPERATURE CONTROLLER
15 63-2564—1
Table 14. Configuration Parameters.
Parameter R7426
Description
Setting I /
Setting II
Default#NameABC
C.01 DIR/
REVO1
x Selects O1 output action to adapt valve or damper direction (Dir: DA, Rev: RA). Dir
C.02 DIR/
REVO3
x Selects O3 output action to adapt valve or damper direction.
C.03 DIR/
REVO2
x Selects O2 output action to adapt valve or damper direction.
C.04
Ctrltyp1
a
x x x Control type (setpoint operating range and default parameter setting). Lo
Setpoint Operating Range Setting
Lo 32 to 130°F for ventilation systems I
Hi1 32 to 260°F for heating systems II
Hi2 32 to 260°F with pump On/Off operation
C.05 CPATYP x x x Selects Control Point Adjustment (CPA) / Set Point Adjustment (SPA) type. 0
CPATYP Potentiometer CPA/SPA Range
0 internal CPA: ±10°F
1 9574 to 1426 ohms CPA: ±10°F
2 100K to 0 ohms CPA: ±10°F
3 9574 to 1426 ohms SPA: 55 to 85°F
4 100k to 0 ohms SPA: 55 to 85°F
5 0 to 100K ohms SPA: 55 to 85°F
6 0 to 100K ohms SPA: 32 to 130°F or 32 to 260°F
C.06 ORange x Selects output control range for O1, O2 and O3 outputs (0: 2-10 Vdc; 1: 0-10 Vdc). 1
C.07 Startup x x Enable/Disable start-up routine (0 = Off, 1 to 10 min). 0
C.08 O1Mode x x O1 output mode selects an individual output function for O1. 4
(un-
configured)
C.09 O3Mode x O3 output mode selects an individual output function for O3.
C.10 O2Mode x O2 output mode selects an individual output function for O2.
Values for
C.08,C.09
and C.10
0 Synchronous / floating 2 3-stage binary-coded On/Off
1 2 stage On/Off 3 PWM (European electric
current valves)
C.11 OMode Selects the output mode for sequence operation or multistage On/Off function. 0
x x 0 Damper (O1), cooling (O2) and heating (O3)
x x 1 Sequence control: heating or cooling (O1,O2, O3)
x Sequence control: 6-stage On/Off (O1Mode, O2Mode, O3Mode = 4)
x x 2 Sequence control: heating (O1, O3) and cooling (O2)
x Sequence control: 4-stage On/Off heating (O1, O3) and cooling (O2)
(O1Mode, O3Mode = 4)
x x 3 Sequence control: cooling (O1, O3) and heating (O2)
x Sequence control: 4-stage On/Off cooling (O1, O3) and heating (O2)
(O1Mode, O3Mode = 4)
x x 4 Two-position damper control (O1), heating (O3) and cooling (O2)
x 5 15-stage binary coded On/Off for heating (O1, O3), and cooling (O2)
C.12 I02ext x x x Dictate usage of I01 and I02 sensor inputs. 0
0I02 installed
1 I01 signal used for I02 input
C.13 LimTyp x x x Limit type (0: Low limit; 1: High limit). 0 / 1
a
Actual Value unchanged during reset to default.
b
Controller can overwrite for self-adaptation purposes.

Honeywell R7426B Specifications

General

Brand	Honeywell
Model	R7426B
Category	Controller
Language	English