User's Manual

Page 12 E2 Wireless I/O
2Chapter 2 – Installation
2.1 General
All E2 Series modules will be housed in a plastic enclosure with DIN rail mounting,
providing options for up to 20 I/O points, and separate power & communications
connectors. The enclosure measures 170 x 150 x 33 mm including connectors. The
antenna protrudes from the top
2.2 Power/Supply
The E2 power supply is of switch-mode design and will accept a 15 - 30 volt DC power
source connected to the “Sup + & Sup -” terminals.
• Note: AC supply requires external rectifier board and Solar requires and External
regulator for charging of battery.
Power Supply rating will depend a
whether the module has expansion I/O
modules connected and if a backup
battery is being used.
Allow 500mA for the radio, 200mA for
the module 1 Amp if expansion I/O
modules (115S) connected and 1 Amp
if a battery is connected and requires
charging.
E.g. If no battery or expansion I/O
modules are connected then the minimum current requirement will be 700mA @13,8V.
If I/O modules are connected and a backup battery is required then the minimum
current requirement will be approximately 2.7Amps @13.8V.
The power supply should be CSA Certified Class 2 approved for normal operation and
if being used in Class 1 Div 2 explosive areas, the power supply must be approved for
this area.
Automatic charging of a 13.8V Sealed Lead-Acid battery connected to the “BAT+” and
“GND” terminals at up to 1A.
SUP -
SUP +
POWER SUPPLY
GND
BAT +
15-30V DC Supply
+
_
External “Sealed Lead
Acid” battery if required