Security Escort
System wiring | en
35
Robert Bosch (SEA) Pte Ltd
Training Manual
2017.08 | V2.18.1.0 | DOC
4.3
EA500 transponder
4.3.1
General
The EA500 transponder is the Security Escort module that provides communications between
the Central Console and the many receivers and alert units throughout the protected area. In
addition to its communications functions, it also supplies power to the receivers. Each
transponder also includes drivers for a single strobe and siren.
4.3.2
Specifications
Enclosure (AE3):
15 in. W, 20.75 in. H, 4.25 in. D
Hardware Kit:
H500
Temperature Range:
-40° to +149°F (-40° to +65°C)
Power:
18.0 VAC, 50 VA maximum plug-in Transformer for 110 V, 60 Hz
Supplies battery backed 12.0 VDC power to Receivers
Power Output:
9V DC used for SE485 or for Proxim radio power
Driver Outputs:
Strobe: 500 mA solid state sink, terminal switches to ground in an alarm
condition.
Siren: 500 mA solid state sink, terminal switches to ground in an alarm
condition.
Battery Backup:
12 VDC Lead Acid Battery
Multiplex Buses:
8 multiplex drivers, each capable of driving 8 Receivers or Alert Units
for a combined total of 64 Receivers and Alert Units per transponder
Comm. Interface:
Selectable SE485 or RS-232
Keyswitch Input:
47k EOL resistor, supervised loop
Compatibility:
*ROM version 4.00 or greater (version shipped with this unit) is
compatible with “‑304” equipment (e.g., EA102A-304). Version 4.00 or
greater is NOT compatible with non “-304” equipment.
*ROM versions earlier than 4.00 are compatible with non “-304”
equipment.
4.3.3
Mounting
Normally, the enclosures are mounted first and all the wiring run, then the electronics are
mounted, wired, and tested.
The enclosures come with their own mounting hardware (H500 Hardware Kit) for mounting
the enclosure to a wall and mounting the circuit board to the enclosure.
–
Mount the enclosure to the mounting surface.
–
Mount the circuit board to the enclosure.
4.3.4
Wiring
Wire the transponder. See wiring diagram on Set the address, page 36.
Wiring to receivers and alert units can be home-run (individual), daisy-chain (from device to
device), or a combination of both. T-tapping is okay. The recommended cable is 4-conductor,
18 AWG (1.2 mm) fire rated.