3.4 Version with ExMax or RedMax
spring return actuator
The ExMax or RedMax spring return actuator has auto-
matic voltage detection 24 V - 240 V AC/DC. The
actuator detects the voltage automatically and does not
have to be adjusted.
Connect the spring return actuator according to the
wiring example.
Several actuators can be connected in parallel, as long
as the performance specifications are taken into consid-
eration.
Functional testing requires a switch that interrupts the
voltage supply (to be provided by customer).
The electrical connection is made in the terminal box.
The factory wiring must not be changed.
Attention!
If interrupted via the switch (1) or the optional release
device (2), the heating (6) is not active.
Connection example ExMax or RedMax spring
return actuator
Fig. 5: Connection example Ex actuator
1 Switch for opening and closing, to be provided by
customer
2 Optional release device, e.g. TROX duct smoke
detector type RM-O-3-D or RM-O-VS-D (outside the
Ex area)
3 Indicator light for CLOSED position, to be provided
by customer
4 Indicator light for OPEN position, to be provided by
customer
5
Connection terminal for potential equalisation 4 mm
2
6 Heating
3.5 TROXNETCOM AS-i
The fire dampers with spring return actuator and the
accessory AS-EM/C module form a functional unit for
BUS communication for fire damper control.
The module must be mounted and wired outside the Ex
zone by the customer.
The module transmits the control signals between
the spring return actuator and the controller unit.
This enables the control the actuator and monitoring
the actuator's run time during function tests.
The 24 V DC supply voltage for the module and
the actuator is transmitted using the AS-i flat ribbon
cable.
Function display:
– Operation
– 4 inputs
– 2 outputs
TROXNETCOM connection example
Fig. 6: TROXNETCOM connection example
1 Controller
2 AS-EM/C module
3 FKR-EU
4 Safe area
Electrical connection
TROXNETCOM AS-i
Explosion-proof fire damper FKR-EU 11
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