GE Security EST3 User Manual

Access control applications
EST3 Installation and Service Manual 3.3
• Input circuit 1
• Input circuit 2
• Output circuit
• Card reader
• Lock
• RPM Resource Profile Manager tool
• ACDB Access Control Database program
3-SAC Security Access Control module
The 3-SAC Security Access Control rail module controls a high-
speed RS-485 circuit called the Security Access Control (SAC)
bus. The SAC bus supports fire, security, and access control
devices.
The 3-SAC handles message traffic for these devices, interfacing
them with the CPU as required. Events are passed from the
devices to the 3-SAC module, then to the CPU for alarm
processing.
The 3-SAC has two sets of circuit terminals, and is capable of
Class A or Class B configuration. Each Class B circuit can
include 31 devices, for a total of 62 devices per module. Class A
circuits can include 30 devices total. In Figure 3-1, we show a
Class B bus with a CRC Card Reader Controller module.
3-MODCOM Modem Communicator module
The 3-MODCOM Modem Communicator module has both
modem and dialer functions. It can transmit and receive
information.
The 3-MODCOM can transmit alarm, supervisory, or trouble
messages to a remote central monitoring station using one or two
telephone lines. A variation of the module (3-MODCOMP) can
transmit pager messages to a paging company using the TAP
protocol.
The module can also receive information sent over telephone
lines by the Access Control Database (ACDB) program.
SAC bus
Since our security and access control devices require 24 Vdc, we
suggest that you always use a four-wire cable for the SAC bus
and a 24 Vdc power supply.
For the data wires, use unshielded, twisted pair, with greater than
6 twists per foot, in 14 to 22 AWG (1.50 to 0.25 sq mm). For the
power wires, use 14 or 16 AWG.
You can use a four-conductor cable with an overall jacket
containing solid 2-19 AWG and 2-16 AWG for the SAC bus.

GE Security EST3 Specifications

General

Brand	GE Security
Model	EST3
Category	Security Sensors
Language	English