EK-WL8-EXP/AU
WIRELESS EXPANDER MODULE
STFV.425551.030-AU-UM rev. 19
10.03.2021
Page 4 of 7
CONNECTORS
UNUSED
POWER
+
-
AC DC
Vcom
POWER
INPUT
NOTE
Other terminal blocks that are not described (marked "UNUSED") do not affect
the operation of expander and are not used.
POWER
The expander is powered via an external power supply.
Use any 12V or 24V power supply and connect it to the +/- inputs on the device.
ATTENTION
The power supply should have an output current limit of 8A and should
meet the requirements of AS ISO 7240.4. The AC and DC inputs are used for moni-
toring the state of the external power supply (this option should be enabled in EK-
WL8-TRH menu
1
).
The expander measures the voltage levels between “-” and each of the AC/DC in-
puts, a fault event will be generated if the voltage drops below 10.5 V. These inputs
can be directly connected to the open collector outputs on the power supply. In other
cases, you will need to provide power to these inputs through a normally closed fault
relay on the power supply. The AC and DC input monitoring can be disabled via the
translator menu.
1
Main and Backup power monitor modes should be set "ON"
