Installation manual
Installation
29
3-5-5
Double Zone balancing with EOL
In the case of a double zone with an EOL resistor, 6 distinct conditions can be detected for the
entire terminal:
• stand-by on both zones
• alarm on zone 1 and stand-by on zone 2
• alarm on zone 2 and stand-by on zone 1
• alarm on both zones
• tamper (wire cutting)
• tamper (short-circuit)
For each of these, the control panel reads different resistance values on the terminal, shown
below in Ohm.
3-6
Connection and balancing of roller
shutter/shock sensors
It is possible to choose between two types of balancing for roller shutter and shock sensors:
• normally closed (N.C.)
• single balancing (NC with EOL)
The following table compares the protection level of roller blind/shock sensors using the two
balancing options provided by the control panel.
If the roller-blind or shock sensor is connected to a terminal of a wireless device, the
connection cable must be less than 2 meters long.
The roller-blind sensor must generate pulses with a length of between 500
μ
sec and 10msec.
3-6-1
Normally closed (N.C.)
In this case, the alarm condition is revealed exclusively by the number of pulses (pulse count)
the control panel detects on the terminal.
If this balancing method is applied, the control panel will be unable to detect tamper, wire-
cutting or short-circuit.
The discriminated conditions are:
• stand-by
• alarm
The alarm condition is detected exclusively by the pulse count and sensitivity, in accordance
with the programmed parameters (refer to the Programming manual,
paragraph 6-1 Zone/
Ingressi
,
Detector type
).
Ohm
Zone 1
Zone 2
(double)
> 2 x 3900 + 6800
tamper (wire cutting)
> 2 x 3900 + 6800
alarm
alarm
3900 + 6800
stand-by
alarm
2 x 3900
alarm
stand-by
3900
stand-by
stand-by
0
tamper (short-circuit)
Alarm
+12V GND
Tamper
Alarm
+12V GND
Tamper
3K9
ƻ
Zone 1
Zone 2
6K8
ƻ
3K9
ƻ
Table 3-6: Protection level
BALANCING
N.C.
Single balancing
(N.C. with EOL)
Roller blind or Shock sensor
very low
high
Содержание Prime060L
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