DataSheet OPTIMA S202011
Table Of Contents
Variable Air Volume Controllers | 5 / 20
Tab. 1: VAV controllers functional overview
NOTES: 
1) Only one analog output available. One value type for feedback can be chosen.
2) Only available with AC 24 V power supply
Setup Possibilities 
Fig. 1: Components of the OPTIMA-SI
Product Parts 
1 Casing with duct connection ange
2 Opposed blade action louver damper
3 Air ow measurement probe
4 Air ow measurement impulse tubing
5 Compact air ow volume controller/damper actuator
6 Insulation with outer sheet metal mantle (OPTIMA-SI)
Legend 
5
6
4
1
3
2
Controller 
Type
Flow Volume 
Adjustment 
Analog Input
Flow Volume 
Adjustment via 
BUS Com.
Controller 
Parameters 
Setup
Hard 
Wired 
Override
Feedback 
Signal 
Type
Feedback 
Values 
(Analog Output) 
1)
BUS 
Communicated 
Variables
Power 
Supply
BLC1
DC 0 V (2 V) 
... 
10 V
MP-BUS
ZTH-EU, PC tool, 
NFC (Android), 
MP-BUS
Open 
2)
,
Close,
V
min
, V
max
DC 0 V (2 V) ... 10 V, 
MP-BUS
Actual volume.
Damper angle,
Actual pressure
Read/Write:
Setpoint, V
min
, V
max
, 
Open, Close
Read: 
Actual volume, 
Damper angle, 
Actual pressure, 
Serial number, 
Fault/Alarm 
messages
AC 24 V,
DC 24 V
BLC1MOD
MODBUS, BACnet, 
MP-BUS
ZTH-EU, PC tool, 
MODBUS, MP-BUS
MODBUS, MP-BUS, 
DC 2 V ... 10 V
BLC1LON - LON
ZTH-EU, PC tool, 
LON
Open 
2)
,
Close 
2)
,
V
max
2)
LON
BLC1KNX - KNX
ZTH-EU, PC tool, 
KNX
KNX
BLC4
DC 0 V (2 V)  
...
10 V
- ZTH-EU, PC tool
Open 
2)
,
Close,
V
min
, V
max
DC 0 V (2 V)  
... 
10 V
-
GO - Dials on controller -
GOMOD MODBUS
Dials on controller, 
MODBUS
MODBUS, 
DC 0 V (2 V) ... 10 V
Same variables  
as BLC1MOD
Tightness of the Blade and the Casing
3C in sizes of less than 400 mm in each of dimensions Width × Height
4C in sizes of 400 mm or more in each of dimensions Width × Height
The classication is done according to the standard EN 1751 for static pressure up to 1000 Pa.










