User's Manual

Elpas Local Controller 3 –Installation Guide
www.elpas.com
Page 2 of 6
V7/Jan 2015
Battery Backup: ELC3 contains a two-position terminal block to connect a
12VDC/7-9Ah lead acid rechargeable backup battery. The backup battery
temporarily powers the controller and up to three other Elpas BUS devices
(using any of the device RJ-11 and terminal block connectors) when the
normal AC power source is disconnected.
See page 5 for details.
ELC3 automatically charges the battery during normal AC power supply
operation.
Connect the (+) positive terminal of the battery to the ELC3 BAT+.
Connect the (-) negative terminal of the battery to the ELC3 BAT-.
Wiring Warnings!
The three RJ-11 connectors Should Not Be Used To Connect to RS-485
Junction Boxes. Each connector should only be used to link to one Elpas
RS-485 BUS device.
Important! Power ELC3 down before you connect any Controller
interface such as RS-485 BUS devices, the Ethernet interface, or the
optional backup battery. Otherwise, accidental shorts or power spikes
can damage the device.
RTC Coin Battery Warning
Risk of explosion if battery is replaced by an incorrect type. Dispose of
used batteries according to instructions
Inputs
ELC3 contains three general purpose analog (N.O.) dry contact
inputs (J6, J7) and three digital inputs (J7, J8) for monitoring alert
sensors or emergency call buttons.
Using an Elpas End-of-Line (EOL) Terminator (P/N: 5-IOX00001),
EOL supervision may be added to the input to detect: Open, Close,
Line Break, and Line Short circuit conditions.
Recommended Cable: 22 AWG, unshielded/twisted pair
Outputs
ELC3 contains two open collector digital outputs (J12) (up to 100mA,
28VDC), and three general purpose digital relay outputs (J9, J10, J11)
(rated 2A/12VDC) for actuating alert response devices.
Note: All outputs are resistive loading only, there is no power factor.
Recommended Cable: 22 AWG, unshielded/twisted pair
Wiegand
ELC3 contains two two-position terminal blocks for a Wiegand input
(J20A – Wiegand wire; J20B – Power and Grounding) to allow
inputs from Wiegand devices.