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General notes
Maintenance
Repair
Disposal
Technical data
Power supply G, G0
Functional data
Digital inputs D1...D8
Universal inputs X1...X8
Building Technologies
HVAC Products
The OZW775 central communication unit requires no maintenance (no battery
changes, no fuses). Clean the housing only with a dry cloth.
The central communication unit OZW775 cannot be repaired in the field. If faulty, return
to the Repair Center of the relevant Siemens Regional Company.
The central communication unit is subject to directive 2002/96/EEC (WEEE, Waste of
Electrical and Electronic Equipment).
"Dispose of the device as electronic waste in compliance with European directive
2002/96/EEC (WEEE) and not as municipal waste. Observe all relevant national
regulations and dispose of the unit correctly. Comply with all local and currently valid
legislation".
Operating voltage
Rated voltage as per EN 60950-1
Safety extra low-voltage (SELV) / protective extra low-voltage
(PELV) as per
Requirements for external safety isolating transformer
(100 % duty, max. 320 VA)
Frequency
Power consumption OZW775
Supply line fusing
Clock reserve
OZW775 device list
Number
Contact sensing
Voltage
Current
Requirements for status / fault contacts
Signal coupling
Type of contact
Insulating strength against mains potential
Permissible resistance
Contact closed
Contact open
Number
Sensors
Passive
Active
Transmitter
Active
Contact sensing status / impulse contacts
Voltage
Current
Requirements for status contacts
Signal coupling
Type of contact
Insulating strength against mains potential
Central communication unit OZW775 V2.0
AC 24 V ± 20 %
AC 24 V
HD 384
EN 61558-2-6
50 / 60 Hz
20 VA
Max. 10 A, transformer on primary
side
46 h typical, min. 12 h
Up to 250 Synco devices
8 (terminals D1...D8 and 1 ground
connection for 2 terminals each)
DC 16.5 V
Typically 8 mA
Potential-free
Maintained contact
AC 3750 V as per EN 60950-1
Max. 200 Ω
Min. 50 kΩ
8 (terminals X1...X8 and 1 ground
connection for 2 terminals each)
LG-Ni1000, T1, Pt1000
DC 0...10 V
DC 0...10 V
DC 16.5 V
Typically 1 mA, max. 6 mA
Potential-free
Maintained contact
AC 3750 V as per EN 60950-1
CE1N5663en
29.10.2008
13/18
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