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C1 C2 C3 C4
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1 2 3 4
2 4 53
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3
4
C1 C2 C3 C4

F430/4
Front view
Description
By means of internal relays, this device executes the controls received from the central
unit or the probe. It is needed to control loads such as 3-speed fan-coils, motorised
valves, pumps and electric radiators.
It has four relays,with independent control but common contacts, which can be used to
control two distinct loads with ON/OFF function and to control a single load with open/
close function.
To manage open/close loads the actuator must be congured with the logical interlock
of the two relays and contacts C1/C2 respectively must be considered to open and close
the rst valve and contacts C3/C4 to open and close the second valve.
The contacts assume dierent functions when the actuator is used to control fan-coils.
Contact C1 is an ON/OFF contact and controls the valve. Contacts C2, C3 and C4 control
the ventilation minimum, average and maximum speed respectively. The fan speed is
selected automatically depending on the dierence between the temperature set by the
user and the room temperature.
Technical data
- Power supply from SCS BUS: 27 Vdc
- Operating power supply with SCS BUS: 18 – 27 Vdc
- Maximum absorption relays activated individually): 37.5 mA
- Absorption (relays activated with interlock or Fan Coil control): 20.5 mA
- Absorption in stand-by: 9 mA
- Current load of individual relays: 4 A (resistive) e.g. electric radiators
1 A (inductive) e.g. solenoid valves, pumps
- Maximum power consumption: 3.2 W
- Operating temperature: 5 – 40 °C
- Size: 2 DIN modules
Conguration
In the same way as for the 2-relay actuator, it is necessary to connect the two
congurators that identify the item address, and the number of the zone the item
belongs to, to the ZA and ZB sockets. A probe and an actuator belonging to the same
zone will require the same numeric congurators in the ZA and ZB sockets.
On the front of the 4-relay actuator are six sockets dedicated to the congurators: ZA,
ZB1, ZB2, ZB3, ZB4, N. The conguration sockets are distributed on the four relays in
the following way:
ZA ZB1 Relay 1 zone address
ZA ZB2 Relay 2 zone address
ZA ZB3 Relay 3 zone address
ZA ZB4 Relay 4 zone address
N progressive zone number
The relays on the device are independent and may be used to activate four separate
loads with ON/OFF function. Therefore, if all ZB congurators are dierent from each
other, the four relays are congured to control four loads in four dierent zones. The
diagram shows the correspondence between the congurator sockets and the contacts
of the relays. The operation of one or more relays may be excluded. To do this, connect
Legend
1. C1 clamps 1 - 2 relay forcing pushbutton
C2 clamps 1 - 3 relay forcing pushbutton
C3 clamps 1 - 4 relay forcing pushbutton
C4 clamps 1 - 5 relay forcing pushbutton
The forcing pushbuttons do not operate if the OFF congurator is connected to the
ZB1, ZB2, ZB3 or the ZB4 congurator sockets.
2. Yellow LEDs for notication of activation of the corresponding relays.
3. Congurator socket.
4. Removable clamp for BUS connection SCS.
the OFF congurator to the ZB socket corresponding to the relay not being used.
However, RL1 cannot be excluded.
The actuator may also be used to control two single loads with Open/Close function,
such as, for example, solenoid valves with opening and closing control. For the
management of these load it will be necessary to congure the actuator with logic
relay interlocking, connecting two consecutive identical congurators in the ZB socket,
therefore ZB1=ZB2 and ZB3=ZB4. For the use of the contacts consider C1 and C2 for
the opening and the closing of the rst valve respectively, and contacts C3 and C4 for the
opening and the closing of the second valve.
The contacts of the relays perform dierent functions if the actuator is used to control
fan-coils. To activate this function, connect 4 identical congurators to the ZB position,
therefore ZB1=ZB2=ZB3=ZB4.
The C1 contact is an ON/OFF type contact and controls the valve, controls C2, C3 and C4
control the minimum, medium and maximum ventilation speeds respectively.
Actuator 4 relays
MQ00185-c-EN 29/04/2014