Shield Aura - AUX 24 V 1 and aux 24 V 2

When powering these devices, the circuit acts as a Class B pathway only when an EOLR-1 is the last device on
the circuit and the relay contacts are supervised. The wiring loss must not exceed 8V. Refer to the
SystemSensor Installation Instructions for wiring information.
AUX 24V 1 and AUX 24V 2
The AUX 24V output terminals provide regulated, non-programmable 24V DC for powering ancillary devices
such as loop modules, I/O boards, and remote displays. The outputs are fused at 900 mA and include a
maximum load rating of 900 mA. Outputs of AUX 24V 1 and AUX 24V 2 are also supervised for circuit trouble
conditions.
Wiring gauge on AUX 24V 1 or AUX 24V 2 outputs must be sized as a function of cable length and device load to
ensure that voltage-drop of the cable does not result in less than the minimum operating voltage at the ancillary
devices.
Connect the ancillary devices to the
OUTterminals. The OUTterminals
supply 24V power and provide short
circuit monitoring.
Connect RTNterminals to the last
ancillary device. The RTNterminals
provide open circuit monitoring.
If open circuit monitoring is not
required, the RTNterminals must be
connected to the OUT terminals to
prevent reporting of
OPENCIRCUITTROUBLE.
This illustrates a Class B circuit that provides open circuit monitoring.
Installation
SHIELD Fire, Safety & Security Ltd
Aura Fire Alarm Control Panel Installation Manual
Version 1.00 |June 2019 |MAN-1431VS
Page 39