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ACU Networked Intelligent Controllers Installation Guide
ACU2X Networked Controllers
The ACU2X is a legacy product that is no longer sold by GE. The information in this section is offered in support
of those who are still operating an ACU2X. The ACU2X was also available in a 16-reader version.
Wiring ACU2X
Note the following when running the cables and wires:
•
In running cables and wires, be sure to observe and follow applicable codes.
•
The dry relay contacts are rated at 2 amp at 30 AC/DC volts.
•
All wires should be stranded.
•
The maximum length of the wiring between the farthest Remote Module (One-Stage Reader,
RRE-2, SMT RIM, or SMT RRM) and the ACU2 controller is 4000 ft. (1220 m) provided the
remote module is locally powered. If supplying power to the remote module form the ACU2X or
ACUXL the maximum distance is 500 feet.
•
Guard against lightning damage.
•
All bare Shields should be taped or protected against accidental shorting against electronic
components.
Terminal Block Connections
All ACU2X Terminal Block connections (TB1 through TB5) are the same as the ACUXL. See Table Table 3-48
through Table 3-61.
DIP Switch Settings ACU2X
The locations of the various DIP switches on the ACU2X are shown Figure Figure 3-6. They are the
same as on the ACUXL
Dial-up Modem Card for ACU2X
The optional daughter board Dial-Up modem can be easily installed into the ACU2X controller.
Refer to the section on installing the modem card for the ACUXL on page 3-11. They are the same. The
Dial-up modem card may not be installed if the installation is to be UL 1076 and/or UL 294 approved.
NOTE: A battery backup or UPS is highly recommended for any ACU Device using Dial-up.
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