Premisys 840160, Справочное руководство

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Alarm Cards 1-15
Alarm Cards Alarm Card Descriptions
1.2.3.1 Card Jumpers/Switch Settings
The ALR 28+14 Card has numerous jumper and other settings, as shown in Figure 1-3. The
sensors allow you to connect up to 28 external devices to the card. These sensors may be
powered either externally or from the alarm card. They are divided into two groups, with 14
sensors per group. Each sensor group is routed through one of two Amphenol jacks, and you
can control the voltage to each group by operating a voltage control switch on the alarm card.
Detailed instructions for sensor control are provided later in this chapter.
The switches allow the card to control up to 14 external devices. As with the sensors, the
switches are divided between the two Amphenol connectors into two groups of seven switches
each. Twelve of the switches are Form C (open or closed based on user input), one is Form A
(always open), and one is Form B (always closed). One of the switches can also be set to trip
if a system power failure occurs. Instructions for switch control are provided later in this
chapter.
The alarm information can also be transmitted to a central site via SNMP or other user-defined
parameters.
Audible Alarm Buzzer Volume Setting
The ALR 28+14 Card has an on-board buzzer for audible alarms. You can set the buzzer to
activate when a particular sensor detects an incoming alarm. The buzzer volume is set by a
control dial marked VOL, which you can adjust with a small screwdriver.
U.S./European Voltage Jumpers
You can configure the ALR 28+14 Card for either U.S. or European operation by moving the
jumpers located on JP64. One jumper is provided for each alarm sensor on the card. Inserting
a jumper on the left-side two pins selects U.S. voltages. Inserting the jumper on the right-side
two pins selects European voltages. All jumpers should be set to the same position, and this
setting should match the configuration of the system chassis for the card to work properly. The
factory default jumper setting is
US .
Voltage Control Switches
Use switches S1 and S2 to control the voltage supplied to each group of active sensors. When
either switch is set to SYS, the board su12 and -12 VDC power to the sensor group
associated with that Amphenol connector. When a switch is set to BAT, the ALR 28+14 Card
supplies external telco power to the sensors in that group.
You can set the switches individually (i.e., one can be set to SYS and the other to BAT).
However, this will affect all 14 sensors in the respective group.