Siemens OZW775 Instructions D'installation page 5

en English
Installation
• In a cabinet or control panel
• Mounting position: Horizontal
• Ensure easy access for service
• Permissible ambient temperature in operation: 0...50 °C
Mounting methods
Refer to Figures
A
Standard mounting on standard rail TH 35-7.5
Mount the rail.
Hook in the unit at the top of the rail.
Push the securing springs down with a screwdriver. Push on
the unit and let the securing springs engage in the rail.
Removal: Push the securing springs down and pull the unit
off the rail.
B
Mounting on the rear wall
Drill 4 holes for screws with a dia. of max. 3.5 mm.
Secure the unit with 4 screws and ensure that the mounting
surface is flat (housing must not be distorted).
Wiring
Refer to Figures
C1
Number of solid wires / stranded wires per terminal
Each terminal can accommodate the following number
of solid or stranded wires (twisted or with ferrules):
1 solid / stranded wire
2 solid / stranded wires
3 or more solid / stranded wires are not permitted.
C2
Cable strain relief
Cable strain relief is mandatory. This means that the
cables must be secured to the lugs at the base of the
unit using cable ties.
C3
Separate cable routing
The cables for AC 24 V operating voltage and
AC 230 V mains voltage (relay connections) must be
laid separately.
Electrical installation
Refer to Connection diagram
Legend to connection diagram:
N1 Central communication unit OZW775
N2, N3 Synco devices on KNX network
F1, F2 Devices with potentialfree status contacts
B1 Sensor delivering passive signals
B2 Signal source delivering active signals
K1, K2 Contactor (controlled by relay with NC contact)
K3 Contactor (controlled by relay with NO contact)
Local electrical regulations must be complied
with!
Protection against electrical shock hazard is ensured
inside the cabinet or control panel. Do not mount the
unit outside such cabinets or panels.
The relays of the unit can switch either mains voltage
or low-voltage. Switching both mains and low-voltage
is not permitted!
Siemens Building Technologies
A B
on page 2
C1 C2 C3
on page 2
2
0.5...2.5 mm
2
0.5...1.5 mm
D
on page 38
Setting up the unit
Commissioning Instructions on CD
On the enclosed CD, you find the Commissioning Instructions in
national languages as a PDF file.
1. Insert CD in the drive.
2. If the ACS installation program is started, stop it.
3. Select [Start] > Run > Open > setupOZW775.htm
to open Commissioning Instructions C5663en (PDF file).
Path (if CD drive = D:) D:\Documentation\OZW775\
4. Set up the unit as explained in Commissioning Instructions
C5663en.
Display and operating elements
Refer to Display and operating elements
LEDs
1 Run (green)
Off No power supply or unit is started up
On Unit ready to operate
Flashing Communication with ACS
2 Local (red)
Signalling of internal fault states by the unit and of faults at
the fault inputs. Indication of "Operating hours for service
reached".
Off No fault (normal operating state)
On Fault acknowledged
Flashing Fault unacknowledged
3 System (red)
Signalling of fault states by the devices on the KNX network.
- Without configured fault relay "System" in the
central communication unit:
Off No fault (normal operating state)
On Device faulty
- With configured fault relay "System" in the central
communication unit:
Off No fault (normal operating state)
On Device faulty, fault relay acknowledged
Flashing Device faulty, fault relay unacknowledged
4 CF Cards (green)
The state indicated by the LEDs applies to both CF cards.
Off No CF card initialized. CF card can be inserted or
removed
On CF card initialized and ready for data exchange
(read and write)
Note: When LED is on, the CF card must never be
inserted or removed
Flashing CF card is being initialized or removed (temporary
state after a "long" push on the "Config" button)
5 KNX (green/red)
Off No bus power supply
Steady green Bus power supply available
Flashing green Data exchange via KNX
Steady red Unit in addressing mode
Operating buttons
A "short" push on a button means <2 seconds and a "long" push
>4 seconds.
6 Config
Short No function
Long Initializing or removing a CF card (or both CF cards).
Also refer to "Button combinations"
74 319 0479 0 b G5663xx
E
on page 38
See next page
14.02.2008 5/40