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S2 microswitches position for manual control and magnetic
†
control
1.
The fire damper's blade is open (the air flow is allowed)
2.
The fire damper's blade is closed (the air flow is not allowed)
FCU Closed blade contact
DCU Open blade contact
NO Normally open
C
Common
NF Normally closed
Motorized version
†
Belimo servomotor:
BFL24T, BFN24T, BF24T, BFL230T, BFN230T, BF230T.
Siemens servomotor:
GRA126, GNA126, GGA126.
Siemens servomotor:
GRA326, GNA326, GGA326.
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Motorized fire dampers electical wiring
To connect the dampers to the power supply, proceed as follows:
• Check that the voltage and electrical frequency are equivalent to
those of the motor of the servomotor (check the motor's informa-
tion label);
• Make the connections as shown in the below diagram.
Microswitches position for motorized version
24V AC/DC power supply
/- Negative (DC) or neutral (AC) black wire
~/+ Positive (DC) or phase (AC) red wire
230V AC power supply
N
Neutral blue wire
L
Phase brown wire
Microswitches position contacts
S1 Common closed damper microswitch
S2 Normally closed, closed damper microswitch
S3 Normally opened, closed damper microswitch
S4 Common open damper microswitch
S5 Normally closed, open damper microswitch
S6 Normally opened, open damper microswitch
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