Honeywell MICRONIK 200 R7426A - Parameter Settings and Adjustment; Setpoint and Limit Setpoints; Cascade Control Configuration; Throttling Range and Reset Time

R7426A,B,C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL-TIME CLOCK
5 EN1B-0203GE51 R0507C
control par. setting I / setting II R7426
no. name
description
low high def.
reso-
lution
unit
A B C
actual
value
P.01 W1 Main setpoint for input T1 0
50 /
130
21 /
70
0.5 °C x x x
P.02 Wlim Limit setpoint (low or high) for input T2
5 /
30
50 /
130
16 /
90
1 °C x x x
P.03 Wcomp Compensation changeover point for input T3 -5 40 20 1 °C x x x
P.04 Wi Winter compensation authority -350 +350 0 2 % x x x
P.05 Su Summer compensation authority -100 +100 0 1 % x x x
P.06 Wcas Submaster or cascade setpoint OFF, 0 50 20 0.5 °C x x x
P.07 Rcas Cascade reset span adjustment 0 40 10 0.5 K x x x
P.08 Xp1 Throttling range (main control loop) for T1 0.5 40 2 0.5 K x x x
P.09 Xp2
Throttling range (cascade or limit control loop)
for T2
0.5 40 10 0.5 K x x x
P.10 Xpc Cooling throttling range for sequence control OFF, 1 40 3 0.5 K x x
P.11 Xph Heating throttling range for sequence control 1 40 6 0.5 K x x
P.12 tr1
1)
Reset time (main control loop)
OFF,
20 sec
20
min
OFF
10/
0.5
sec/
min
x x x
P.13 tr2
1)
Reset time (cascade control loop)
OFF,
20 sec
20
min
OFF
10/
0.5
sec/
min
x x x
P.14 MINPOS Minimal pos. for air damper actuators 0 50 20 1 % x x
P.15 Ystart Start point for mid range shift of output Y1 -20 +20 0 0.5 K x x x
P.16 SOFFS Offset of main setpoint in Standby mode 0 10 2 0.1 K x x x
P.17 T1Cal Calibration of temperature sensor T1 -20 +20 0 0.1 K x x x
P.18 T2Cal Calibration of temperature sensor T2 -20 +20 0 0.1 K x x x
P.19 T3Cal Calibration of temperature sensor T3 -20 +20 0 0.1 K x x x
P.20 RetOffs Return air offset to simulate exhaust air cond. OFF, 0 5 OFF 0.1 K x x
P.21 RuntimeY1 Actuator run time for Y1 6 180 60 1 sec x x
P.22 RuntimeY3 Actuator run time for Y3 6 180 60 1 sec x
P.23 RuntimeY2 Actuator run time for Y2 6 180 60 1 sec x
P.24 NightLow
2)
Night low limit against temperature extremes OFF, 8 19 OFF 1 °C x x x
P.25 NightHigh
2)
Night high limit against temperature extremes OFF, 21 40 OFF 1 °C x x x
P.26 NOFFS
2)
Offset of main setpoint in Night mode 0 30 5 0.1 K x x x
1)
for tr > 2 min ⇒ resolution = 0.5 min, for tr < 2 min ⇒ resolution = 10 sec
2)
on Controllers with Real-Time Clock, only
For detailed information of control parameters see chapter Parameter Settings and Adjustment.
Table 5. Control parameters R7426A,B,C