Manual

WI-I/O 9-x Wireless Module User Manual v2.16
WI-I/O-EX-1-S-x Serial Module
Page 18
TYPE OF LOAD LOAD mA
WI-I/O 9-1 quiescent 85
WI-I/O-EX-1-S-1
quiescent
45
6 DI @ 10 mA 60
3 AI @ 20mA x 2 120
4 DO @ 25mA 100
Battery charging 100
TOTAL 510
So both modules could be powered from one power supply and one battery, provided the external
supply voltage is more than 15VAC or 17VDC.
2.3.5 24V Regulated Supply
Each module provides a 24V DC regulated supply for analog loop power, except for WI-I/O 9-4_WI-
I/O-EX-1-S-4. The supply is rated at 150mA, and should only be used for powering analog loops.
2.4 Input / Output
2.4.1 Digital Inputs (WI-I/O 9-1, WI-I/O 9-2 and WI-I/O 9-4)
The ”-1” and ”-2” modules each provide four digital inputs with 5000 volt opto-isolation, and the ”-4”
provides 4 to 16 inputs with 3000 volt surge protection. All inputs are suitable for voltage free contacts
(such as mechanical switches) or NPN transistor devices (such as electronic proximity switches). PNP
transistor devices are not suitable. Contact wetting current of approximately 5mA is provided to
maintain reliable operation of driving relays.
Each digital input is connected between the appropriate "DI" terminal and common "COM". Each
digital input circuit includes a LED indicator which is lit when the digital input is active, that is, when
the input circuit is closed. Provided the resistance of the switching device is less than 200 ohms, the
device will be able to activate the digital input.