• Make sure the device connections are accessible.
Fig. 2: Wall/Ceiling mounting
(3)
Protective Earth connection
Protective Earth: In case of error, a terminal can be connected to an external protective conductor to avoid
electric shocks.
A protective earth cable with a minimum cross-section of 2.5mm
2
and a copper-tinned ring type crimp cable
lug (e.g. DIN 46235 or DIN 46234) must be fastened to the rear of the housing (using the M4 bolt close to the
IEC 417 Protective Earth Symbol). After installation, check for low ohmic connection between the housing and
the protective earth connection.
Warning
This equipment must be grounded. Never unplug the ground conductor or operate the equipment
in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspec-
tion authority or an electrician if you are uncertain that suitable grounding is available. When in-
stalling or replacing the unit, the ground connection must always be made first and disconnected
last.
(4)
LAN
For the standard configuration of your device via Ethernet, connect port LAN1 or LAN2 to your LAN using an
Ethernet cable. The device automatically detects whether it is connected to a switch or directly to a PC.
Use just one of the ports (LAN1 or LAN2). The second port is used to cascade a number of devices. If you
use both Ethernet connections on the same switch, loops may form.
(5)
Power connection
The APR222ac is powered by a 110 V or 24 V nominal DC power source, depending on the model.
Teldat SA
2 Installation
APR222ac
3
