Panasonic Electric Works Nordic AB
MEW01351
Rev: -
Planning Instructions Fire alarm system EBL512 G3, V1.1.x
28
6.2.1
Type of zone line input
Each input shall be selected as
Not used
or one of the following types
/ modes.
6.2.1.1
Zone line input (EOL capacitor)
This type is normally used. It has the lowest zone line current
consumption since the end-of-line device is a capacitor, 470 nF (±10
%). Max. allowed cable resistance is 50 ohm. Max. allowed cable
capacitance is 50 nF. Total detector current consumption < 1.5 mA.
6.2.1.2
EX zone line input (EOL resistor)
This type shall be used
only
when units for Hazardous (Ex) areas shall
be connected, i.e. via the Galvanic isolator MTL5061 (2820). The
end-of-line device has to be a resistor, 10K (±5 %) with a body
surface area > 230 mm
2
(supplied with the Galvanic isolator). Max.
allowed cable resistance is 40 ohm. Max. allowed cable capacitance is
70 nF. Total detector current consumption < 1.5 mA.
6.2.1.3
Zone line input (EOL resistor)
NOTE!
Valid for the Australian and New Zealand conventions only.
This type shall be used
only
when any of the other types cannot be
used (e.g. for some older type of detectors and not Panasonic
detectors). It has the highest zone line current consumption since the
end-of-line device is a resistor, 4K7 (±5 %). Max. allowed cable
resistance is 50 ohm. Total detector current consumption < 2.0 mA.
6.2.2
Input states
Each input will be in one of six different states.
6.2.2.1
Normal state
The normal zone line input state, i.e. no alarm, no fault, etc. and the
nominal voltage is 24 V DC
12
. From this state any other state can be
reached / activated.
6.2.2.2
High current state
The max. current consumption limit
13
for the zone line input is
exceeded, which is indicating that e.g. too many detectors are
connected. This generates a fault condition in EBL512 G3. From this
state any other state can be reached / activated except the open circuit
state.
6.2.2.3
Alarm state
One alarm point (or more) on the zone line is in alarm state and the
alarm limit
13
for the zone line is exceeded. This activates a fire alarm
in EBL512 G3. In this state short-circuit, open circuit, high current
12
Allowed voltage 15-28 V DC.
13
This limit is depending on the selected input mode.
