9
Operating manual
TROX air terminal units
Type VFC volume flow controllers
Danger!
Danger of electric shock! Do not touch any
live components! Electrical equipment carries
a dangerous electrical voltage.
•
Only skilled qualified electricians are allowed
to work on the electrical system.
•
Switch off the power supply before working
on any electrical equipment.
Electrical connection data:
M01:
24 V AC ±20% 50/60 Hz
1 VA
24 V DC ±20%
0,5 W
M02:
230 V AC
50/60 Hz
3 VA
Switches provided by the customer (volt-free contacts) can
be used for making the switching procedures shown below:
1-wire control (illustration above)
Switch S1 open :
max
Switch S1 closed :
min
2-wire control (3-point) (illustration in middle)
Switch S2 at 0: Drive stopped
Switch S2 at 2:
max
Switch S2 at 3:
min
1
2
3
VFC
~
S1
1
2
0
3
~
VFC
2
S2
3
M01, M02
M01, M02
1-wire control
min
/
max
2-wire control (3-point)
min
/
max
min
-
max
switching wiring
24 V / 230 VAC
24 V / 230 VAC
~
- +
N L
~
- +
N L
Actuator M01 ... M02
