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1. Connection Hub Specifications
Safera Connection Hub enables two extra features for Safera Stove Guards:
1. Auxiliary ON/OFF output with two signals and four states.
These signals are called AUX1 and AUX2. They can be used to send real-time
status information to a building automation system. They operate with optoisola-
tors and thus provide a potential-free contact which is naturally compatible with
almost all automation and security systems.
2. Container Unit (CTU) connection for the optional liquid extinguishing system.
This applies only to systems fitted with the necessary tubing and nozzles (Safera
Siro IN-Line).
Electrical specifications
• AUX outputs are optoisolated, thus there is no galvanic connection between the
Safera system and the automation system.
• When the AUX outputs are active (ON), the optoisolator’s output transistors will
be held in conducting mode, thus enabling current flow from IN to OUT. This
connection can be used exactly as a relay’s contact, however the direction and
amount of the current flow must be controlled as specified below.
• Maximum IN-OUT voltage is 24 VDC.
• Maximum IN-OUT current is 10 mA.
• Only DC voltage between IN-OUT, no AC is permitted!
AUX
IN 1
= Yellow
OUT 1 = Green
IN 2
= White
OUT 2 = Brown
Dimensions
110 x 55 x 22 mm
Power OUT
(Safera Siro IN-line or Siro R sensor unit)
CTU
Optional
extinguisher unit
Power IN
(Safera Power
Supply)
Content
1. Specifications
2. Connection to Safera system
3. AUX-connection to Automation or Security system
4. Installation and testing with Safera Siro and Siro R
5. Removing the Connection hub or CTU from Safera system
