STRA-04 Room controller. Installation and maintenance manual.
Fläkt Woods
5
Specifications are subject of alteration without further notice.
STRA-04 for Optivent
Terminal
Designation
Function
10
G
Supply voltage 24 V AC
11
G0
Supply voltage 0 V
20
GDO
24 V AC out common for DO. Internally connected to terminal 10, G.
21
G0
0 V common for UO. Internally connected to terminal 11, G0.
23
UO1
Control of heating
For 0...10 V DC valve actuator, max. 5 mA (FS). The valve actuator´s 0…10 V control signal terminal is connected to
terminal 23 and its supply terminals are connected to terminals 10 and 11. Make sure that the reference pole G0 is
connected to the correct terminal on the actuator.
alternatively
For 24 V AC thermal actuator, max. 2.0 A. The thermal actuator is connected between terminals 23 and 20, GDO.
22
*
UO2
Control output cooling.
For 0..-10 V or 2-10 V DC valve actuator, max. 5 mA (FS). The valve actuator's 0…10 or 2-10 V control signal terminal
is connected to terminal 22, and its supply terminals are connected to terminals 10 and 11. Make sure that the
reference pole G0 is connected to the correct terminal on the actuator.
alternatively
For 24 V AC thermal actuator, max. 2.0 A. The thermal actuator is connected between terminals 24 and 20, GDO.
30
Al1
For external room sensor PT1000. Measuring range 0...50°C. Connect sensor between terminal 30 and 41, AGnd.
31
AI2
For 0-10V CO
2
sensor, input signal.
32
DI1
Occupancy detector. Potential free contact is connected between terminal 32 and 40, +C. Closed contact indicates
occupancy.
Also see Occupancy detector section.
33
DI2/CI
Fläkt Woods STRZ-16 (FS) condensation detector. Connect the sensor between terminal 33 and 41, AGnd.
alternatively
Window contact DI). Connect potential free contact between terminal 33 and 40, +C. Closed contact indicates
closed window.
40
+C
24 V DC out common for DI and UI (with digital function)
41
AGnd
Analogue earth, reference for AI and UI with analogue function)
42
A
RS485 communication A
43
B
RS485 communication B
*
On version 1.4.x.x.x has UO2 and UO3 switched pin for STRA-04, UO2= Pin 22 and UO3=24.
You can with parameter 328 switch back UO2 to pin 24 like in 1.3.x.x.x by set 328 to 0.
Version 1.4 is introduced since June 2013.
8790 GB 2016.03
