User's Manual

A7817A
15
4.5 Wiring the Reader to the Interface Module Using Multiple
Power Supplies
The Diagram below shows how to wire the Reader to the Interface Module using more
than one power supply. When you are using multiple power supplies do not connect the
Reader +12-30VDC (J2, pin 3) or earth ground (E1) to the Interface Module. Wire the
Reader +12-30VDC and earth ground connections to the additional power supply. The
Reader ground wires must be connected to the additional power supply and the
Interface Module ground, however. You can use an additional power supply for each
Reader you have connected by following the diagram below.
Reader Interface Module
J2: Pin 1 TS2/TS3: Data B
J2: Pin 2 TS2/TS3: Data A
J2: Pin 3 Not Connected
J2: Pin 4 TS2/TS3: GND
E1 Earth Ground Tab TS2/TS3: EGND
Note: The earth ground tab E1
on each Reader must be
connected to the mounting
screw in the rear housing as
shown in the diagram.