UNC100 Axiom Hardware Manual V1.1
RBH Access Technologies Inc.
Page
21
of
25
Outputs
There are two form C relays and two open collector outputs that can be programmed as general purpose
or default applications. Although the contacts are rated at 12 amperes at 125vac the surge protectors
prevent voltages greater then 40vac or 56vdc from being applied. The recommended use of the relays is
to provide isolated outputs for driving electric strikes or magnetic locks at a maximum voltage of 24v.
The open collector outputs are current limited to 100 milli-amperes direct current only.
Number Default Application
Type
1
Lock
Relay form C
2
Forced Entry Alarm
Open Collector (100ma)
3
Door Held Open
Relay form C
4
Alarm Shunt
Open Collector (100ma)
Default Output Operation
Lock Output
For magnetic locks, the relay should be configured from the PC as On State de-energized for fail-safe
operation. If power fails (
AC and battery
) the power to the magnetic lock is removed and the door is
opened.
Forced / Tamper
The Forced/Tamper output turns on if the door is forced open or if a reader tamper is detected. This
output remains on for as long as the alarm condition exists.
Door Held Open
The Door Held Open output turns on if the door is held open longer than the programmed limit. This
output remains on until the door closes. During the warning period, this output will pulse every second.
Alarm Shunt
The alarm shunt output turns on when the door is unlocked. This output turns off when the door is re-
locked if the door is closed at that time; otherwise the output turns off when the door closes. Normally
the shunt output is used to bypass a door contact monitored by a secondary alarm panel.
Switching Inductive Devices (Locks, Bells)
Exercise caution when switching an inductive load. Inductive devices include external relay, solenoids,
bells, and door locks. All of these devices generate extremely high voltage spikes (
several thousand volts
)
when applied power is removed. Possible disruption of operation could occur if this interference gets on
to the electronic circuit board.
