Elkron IM915AM Manual Del Usuario página 19

Synchronization allows sensor configuration for maximum sensitivity
without needing to resort, for the reduction of detection capability, to the
same methods applied to reduce interference to a minimum. The Sync
terminal(considered as the MASTER sensor output and as the SLAVE
sensors' input), which is used as back-up for the synchronism line, is
designed for this purpose; it is essential that this line be the only one and
that it directly connect the sensors to be synchronized.
There is a maximum number of 3 sensors which can be synchronized, of
which the MASTER is one, and which is to be configured by SW2 DIP 1.
It is important that only one MASTER be identified among the synchronized
sensors. To identify the MASTER sensor (only one) from the SLAVE
sensors (from a minimum of 1 to a maximum of 2), it is necessary to
configure SW2 DIP 1, in particular:
SW2 DIP 1 on OFF : SLAVE Sensor
SW2 DIP 1 on ON :MASTER Sensor
To distinguish the first SLAVE sensor from the second one (naturally, in
the presence of only one SLAVE, it makes no difference whether it is called
first or second), the SW2 DIP 2 must be configured as follows:
SW2 DIP 2 on OFF : SLAVE 1 Sensor
SW2 DIP 2 on ON :SLAVE 2 Sensor
If the synchronism function is not used, leave SW2 DIP 1 and DIP 2 in
OFF position, as per factory configuration.
9.13 ANTIMASKING OUTPUT (AM terminal)
This is a single output for both zones, it has a normally "removable" OPEN
COLLECTOR configuration, which goes to GND if one or both detection
zones are masked (Imax = 10 mA).
The antimasking system provides the sensor continuous protection against
masking attempts. In particular, the antimasking system of the infrared zone
consists of 2 active infrared transmitters and of one receiver (inside the
Synchronization allows sensor configuration for maximum sensitivity
without needing to resort, for the reduction of detection capability, to the
same methods applied to reduce interference to a minimum. The Sync
terminal(considered as the MASTER sensor output and as the SLAVE
sensors' input), which is used as back-up for the synchronism line, is
designed for this purpose; it is essential that this line be the only one and
that it directly connect the sensors to be synchronized.
There is a maximum number of 3 sensors which can be synchronized, of
which the MASTER is one, and which is to be configured by SW2 DIP 1.
It is important that only one MASTER be identified among the synchronized
sensors. To identify the MASTER sensor (only one) from the SLAVE
sensors (from a minimum of 1 to a maximum of 2), it is necessary to
configure SW2 DIP 1, in particular:
SW2 DIP 1 on OFF : SLAVE Sensor
SW2 DIP 1 on ON :MASTER Sensor
To distinguish the first SLAVE sensor from the second one (naturally, in
the presence of only one SLAVE, it makes no difference whether it is called
first or second), the SW2 DIP 2 must be configured as follows:
SW2 DIP 2 on OFF : SLAVE 1 Sensor
SW2 DIP 2 on ON :SLAVE 2 Sensor
If the synchronism function is not used, leave SW2 DIP 1 and DIP 2 in
OFF position, as per factory configuration.
9.13 ANTIMASKING OUTPUT (AM terminal)
This is a single output for both zones, it has a normally "removable" OPEN
COLLECTOR configuration, which goes to GND if one or both detection
zones are masked (Imax = 10 mA).
The antimasking system provides the sensor continuous protection against
masking attempts. In particular, the antimasking system of the infrared zone
consists of 2 active infrared transmitters and of one receiver (inside the
sensor) capable of detecting solid masking elements or sprays applied to
the lens with the intention of masking the sensor.
The attempt to mask one zone is displayed by the quick flashing of the
LED of the zone in question and of the general led. The output remains
active and the LED's flash quickly for as long as masking persists.
EXAMPLE OF ANTIMASKING OUTPUT CONNECTION
ALARM UNIT
24h
AM
TAMPER
SENSOR
R = balancing resistance: 1.5K -2.2K -4.7K.If the connection is made with
units with balanced inputs, it is necessary to use the resistances with which
the unit has been equipped.
9.14 SELF-TESTING
The sensor has two types of self-testing functions (both dispose of visual
and warning indications through dedicated output).
• The first provides continuous control of certain sensor functions, for
example, supply voltage check, check of the noisiness of each single
zone (only with system armed, see par. 9.2), etc.
This type of internal fault is accompanied by:
- the slow flashing of the ALARM LED (whether enabled or not) for
faults that do not directly concern the two detection zones (for example,
a supply voltage outside the allowed range).
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sensor) capable of detecting solid masking elements or sprays applied to
the lens with the intention of masking the sensor.
The attempt to mask one zone is displayed by the quick flashing of the
LED of the zone in question and of the general led. The output remains
active and the LED's flash quickly for as long as masking persists.
EXAMPLE OF ANTIMASKING OUTPUT CONNECTION
ALARM UNIT
24h
AM
TAMPER
SENSOR
R = balancing resistance: 1.5K -2.2K -4.7K.If the connection is made with
units with balanced inputs, it is necessary to use the resistances with which
the unit has been equipped.
9.14 SELF-TESTING
The sensor has two types of self-testing functions (both dispose of visual
and warning indications through dedicated output).
• The first provides continuous control of certain sensor functions, for
example, supply voltage check, check of the noisiness of each single
zone (only with system armed, see par. 9.2), etc.
This type of internal fault is accompanied by:
- the slow flashing of the ALARM LED (whether enabled or not) for
faults that do not directly concern the two detection zones (for example,
a supply voltage outside the allowed range).
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AM AM
TAMPER TAMPER
SENSOR SENSOR
AM AM
TAMPER TAMPER
SENSOR SENSOR
R
+
R
+