WattMaster MG331-21-VAVCAV - Manual (Page 8)

Form: WMS-OE356-DigitalInput-ModExpBoard-1B.doc
Page 1 of 1
VAV System
Description
The OE356 - 4 Digital Input Modular Ex-
pansion Board is used in conjunction with
the OE352 - 2 Slot Modular I/O Base
Board or the OE353 - 4 Slot Modular I/O
Base Board. The OE356 Expansion
Board provides 4 digital inputs for sensing
status of connected dry contact closures
or connected voltage depending on how
the external equipment is wired to the
digital inputs on the OE356 board.
For easy wiring the OE356 – 4 Digital In-
put Modular Expansion Board connects to
the OE352 or OE353 Modular I/O Base
Boards by means of an integral connector
arrangement. Power is supplied to the
OE356 - Expansion Board through this
connector, simplifying installation and
connection. Jumpers are also provided on
the OE352 and OE353 Modular I/O Base
Boards for addressing of the OE356 - Ex-
pansion Board(s).
The digital inputs on the OE356 share one
common terminal between the 4 inputs.
The common terminal may be connected
to either 24 VAC or the 24 VAC common
depending on how the board is to be
wired to the equipment. Inputs are opti-
cally isolated from other circuitry.
Technical Data OE356 – 4 Digital Input
Modular Expansion Board
Operating
Power From OE352/OE353
Modular I/O Board
Power Consumption 2 VA Maximum
Operating Temp 10 ° F to 149 ° F Operating Humidity 90% RH Non-Condensing
Communications Integral I
2
C Chip Weight 4 oz.
Inputs:
Digital Input Qty. 4 Digital Input Rating 24 VAC or Dry Contact Closure
Three Year Warranty WattMaster reserves the right to change specifications without notice
OE356 - 4 Digital Input
Modular Expansion Board