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5.1.2
Input states
Each input will be in one of six different states.
5.1.2.1
Normal state
The normal zone line input state, i.e. no alarm, no fault, etc. and the nominal voltage is
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24V
. From this state any other state can be reached / activated.
DC
5.1.2.2
High current state
The maximum current consumption limit
indicating that e.g. too many alarm points are connected. This state generates a fault
condition in FT1020G3. From this state any other state can be reached / activated except
the open circuit state.
5.1.2.3
Alarm state
One alarm point (or more) on the zone line is in alarm state and the alarm limit
zone line is exceeded which activates a fire alarm in FT1020G3. In this state short-circuit,
open circuit, high current and low voltage states cannot be reached / activated. After alarm
reset, the zone line input will return to the normal state.
5.1.2.4
Short-circuit state
The short circuit current limit
normally generates a fault condition in FT1020G3 but instead, a fire alarm can be activated,
if this option is selected via EBLWin.
5.1.2.5
Open circuit state
The open circuit current limit
or no current, i.e. the End-Of-Line device is not detected which generates a fault condition
in FT1020G3. From this state any other state can be reached / activated.
5.1.2.6
Disconnected state
Via menu H8/S1 (Disconnect loop / zone line input) the zone line input can be
disconnected
be reached / activated.
5.2
8 relays expansion board 4581
Each board has to be programmed via EBLWin for Address (Board no.), set via jumpers
"JP2-JP4" as shown in Table 3 page 25.
The 4581 board has eight programmable relay outputs (Output 0-7).
Connections to "J1:1-16" and "J2" according to drawing F729.
Each output has to be programmed via EBLWin for the following:
Type, i.e. output for Control, Alarm devices, etc.
Output signal period (steady, pulse, delay, etc.)
Logic, i.e. normally open (NO) or normally closed (NC) contacts
Control expression (contains one or more trigger conditions)
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Voltage range 15-28 V DC.
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This limit is dependent on the selected input mode.
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This is indicated in FT1020G3 by the LED Fault / Disablements "General disablements".
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Relay contact ratings: Max. 2A @ 30 V DC.
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is exceeded, indicating short-circuit on the zone line which
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is passed, indicating very low zone line current consumption
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, i.e. there is no voltage on the zone line. From this state no other state can
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Technical/Programming Manual
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for the zone line input is exceeded, which is
FT1020G3 Rev 2.2.1
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for the
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