Handbook OPTIMA S FC BM 202206

28/34 | OPTIMA-S-FC...BM
MP-Bus
(This operation mode requires parametrization)
VAV control in V
min
… V
max
range and other functionalities with all variables communicated through bus (terminals 1, 2,
5) – by MP-Bus protocol.
MP
A)
2
1 3 6
7
5 8
D+
T
U
/
MP
–
T
+
~
–
T
+
~
Y
-D
Additional functions can be activated by connecting the override inputs z1 and z2.
The priority of these functions is higher than the VAV modulating operation with analog input.
Override control z1
Contact 11-9 = Motor STOP
Contact 11-10 = Damper OPEN
Override control z2
Contact 12-13 = Damper CLOSED
Contact 12-14 = V
max
11 and 12 without contact = no priority override through z1 or z2
10
9
14
13
12
11
9
1110 12
13
14
15 16
z1
z2 S1
–
T
+
~
–
T
+
~
Priority rule – BACnet / Modbus Control
1. z1
2. z2
3. Bus Watchdog
4. a) adaption (autonomous initializing controller function)
5. b) synchronisation (autonomous initializing controller function)
6. Y-Step Control: Close – V
min
- V
max
(through analog input – see wiring for AC/DC 24V Step Control)
7. Bus Override
8. Bus Setpoint: V
min
– V
max