F Function
WE
Anl
Comment
Function block parameters
/ Range of values (default)
11 4-point
characteristic
0
Not in Anl
1.5-1.8,
3.x, 7.x
CO1 -> F11 - 1: 4-point characteristic,
only with CO1 -> F08 - 0
CO1 -> F11 - 0: Gradient characteristic
12 Control mode
three-step [RK1]
0 to 10 V [Y1]
1
All
CO1 -> F12 - 1: With [RK1] three-step control
With [Y1] 0 to 10 V control
Function block parameters:
K
P
(proportional gain) / 0.1 to 50.0 (2.0)
T
N
(reset time) / 1 to 999 sec (120 sec)
T
V
(derivative-action time) / 0 to 999 sec (0 sec)
T
Y
(transit time) / 15, 30, ..., 240 sec (45 sec)
CO1 -> F12 - 0: On/off control; OPEN/CLOSED signal for
valve issued, i.e. when BA7 = 0 –> BA6 = 1
when BA7 = 1 –> BA6 = 0
Function block parameters:
Hysteresis / 1 to 30 °C (5 °C)
Min. ON time / 0 to 10 min (2 min)
Min. OFF time / 0 to 10 min (2 min)
13 Limitation of
deviation for OPEN
signal
0
All
CO1 -> F13 - 1: Only with CO1 -> F12 - 1
Function block parameter:
Max. deviation / 2 to 10 °C (2 °C)
14 Release RK1
at BE15
0
All
With CO1 -> F14 - 1, FG1 has no function;
Options
bE / 1, 0 (1)
15 Processing of
external demand
in RK1
0
All
How the external demand is processed in RK1 depends on
CO1 -> F16, CO1 -> F17 and CO7 -> F15.
16 Processing of
external demand,
0 to 10 V
Input term. 17/19
0
Not in
systems
with solar
circuit
CO1 -> F16 - 1: Only with
•
CO1 -> F15 - 1
•
CO1 -> F17 - 0
•
CO7 -> F15 - 0
17 Processing of
external demand,
binary
Input term. 17/18
0
Not in
systems
with solar
circuit
CO1 -> F17 - 1: Only with
•
CO1 -> F15 - 1
•
CO1 -> F16 - 0
•
CO7 -> F15 - 0
18 Request max. flow
set point over a
0 to 10 V signal
0
All
CO1 -> F18 - 1: Controller output Y1 no longer available.
The max. flow set point is requested as a 0 to 10 V signal
corresponding to 0 to 120 °C over Y1.
F Function block number, WE Default value, Anl System code number
108
EB 5576 EN
Appendix
