Download NEXUS Modular Access Control

NEXUS Installation V1.07 - 01/11/04
NEXUS
Modular Access Control
Connections to reader inputs, contact inputs and relay outputs are carried
out using plug in terminal blocks for greater control and ease of installation
and maintenance.
Nexus Power
Power for the controller is provided via a separate 12Vdc power supply; two
separate power inputs are provided on the motherboard. These being
‘controller’ and ‘auxiliary’ power supplies. The controller supply provides
power for the controller logic circuitry whilst the auxiliary supply provides
power for readers and relays both input are fused and connection of both
supplies to one suitable rated power supply is acceptable.
Power supplies
Nexus does not carry on board transformer and battery charging facilities.
This is provided by external psu’s, which must be suitably rated for both the
power requirements of the controller as well as the readers connected to the
controller.
The section ‘Applying Power’ (page 41), discusses power requirements in
greater detail, as well as offering guidance on the estimation of system
power requirements.
Copyright © 2002 Morley Electronics
Page 12 of 51
Document Number CTD1000