Bolid S2000-2 User Manual download pdf (Page 30)

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Besides, reader’s LEDs can display armed (red lighting) and disarmed (LED is off) conditions of the

following loops combinations (defined by Normal Mode Condition parameter  see Reader Configu-

ration Parameters Section of this Manual):

− Alarm loop 1 only

− Alarm loop 2 only

− Alarm loop 1 or alarm loop 2

− Alarm loop 1 and alarm loop 2

The controller provides any loop monitoring for breaking after the relevant arming command receiving

only if the loop resistance (taking into account including the terminating resistor included) ranges be-

tween 5 kOhm ± 10% to 11 kOhm ± 10%.

No messages are generated by the controller if the loop has been shorted or opened within 50ms.

No messages are generated by the controller if loop resistance value slowly changes at the rate of at

most 10% per hour and does not fall beyond the 5 to 11 kOhm range.

An alarm loop when armed is considered to be broken if its resistance is step-like changed by more

than 10% or has been out of the 5 to 11 kOhm range for more than 70ms. In this case the controller

generated an INTRUSION ALARM message for this alarm loop.

Leakage resistance between the loop wires or between each wire and ground must not be less than

20 kOhm.

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Bolid S2000-2 User Manual Page 30