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Appendix
PA1: Boiler 1 (systems Anl 1 to 7)
PA2: Boiler 2 (systems Anl 4 to 7)
Parameters
Maximum flow temperature
Minimum return flow temperature
Minimum activation time
Minimum deactivation time
Function block parameters (Co1/Co2):
Start-up time for boiler (Fb01 = OFF)
K
(proportional gain)
P
(Fb05 = ON/OFF)
T
(reset time) (Fb05 = ON/OFF)
N
T
(derivative-action time)
V
(Fb05 = ON/OFF)
K
(proportional gain) (Fb06 = ON)
P
T
(reset time) (Fb06 = ON)
N
T
(derivative-action time)
V
(Fb06 = ON)
T
(valve transit time) (Fb06 = ON)
Y
Hysteresis (Fb06 = OFF)
Min. activation time (Fb06 = OFF)
Min. deactivation time (Fb06 = OFF)
K
(proportional gain) (Fb07 = OFF)
P
T
(reset time) (Fb07 = OFF)
N
Start (lower value) (Fb07 = ON)
Stop (upper value) (Fb07 = ON)
T
(derivative-action time)
V
(Fb07 = OFF)
T
(modulation transit time)
Y
(Fb07 = OFF)
118
EB 5474 EN
PA1
PA2
Range of values
20 to 160 °C
20 to 120 °C
0 to 90 min
0 to 90 min
0 to 5400 s
0.1 to 99.9
0 to 999 s
0 to 999 s
0.1 to 99.9
0 to 999 s
0 to 999 s
5 to 240 s
0 to 30 °C
0 to 600 s
0 to 600 s
0.1 to 99.9
0 to 999 s
0 to 1000
0 to 1000
0 to 999 s
5 to 240 s
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