Panasonic 1735, Техническое описание

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Panasonic Electric Works Nordic AB
MEW01295 Rev: 2 Technical Description Alert Annunciation Units 1735 & 1736, ver. 1.4.x
33
14 Technical data
14.1 Power supply
Nominal voltage for the AA units 1735 & 1736 is 24 V DC.
26
The number of AA units
27
that can be power supplied from the c.i.e. is
depending on all other units connected to the same RS485 line (i.e. the
current consumption).
As an alternative, the units can be power supplied from an external
power supply.
14.2 RS485
The AA units communicate with the c.i.e. via RS485, i.e. in system
EBL512 via the "Ext. FBP / DU interface board" 1587 (data rate 9600
baud) mounted in the c.i.e. and in system EBL128 via the "RS485
transceiver component 4552" plugged on the mother board in the c.i.e.
In system EBL512 G3 the required components are mounted on the
main board by delivery.
In the last unit on the line, a termination resistor (120R) has to be
connected. In the
AA units 1735 & 1736 this is done via jumper
"JP8". ("JP8" mounted = the termination resistor is connected.)
14.2.1 Cable
The cable to be used in systems EBL512 and EBL512 G3 is LiYCY
(
T wisted P airs) 2 x 2 x 0.75 mm
2
(screened - tinned copper braid) or
equivalent. Cable length up to 1200 m (theoretically) but the cable
length is also depending on the current consumption, i.e. the type and
number of units connected.
NOTE! In system EBL128 the screen is not used / connected.
2 x ELQYB 2 x 1 mm (0.75 mm
2
) can then be used.
14.3 RS232
The AA units are equipped with an RS232 interface (J2), which makes
it possible to download new SW directly to the AA unit respectively.
14.4 Connection
The AA units are equipped with a plug-in terminal block (J1) for the
cable connections. Up to 1.5 mm
2
conductor area can be used.
14.5 Current consumption
The current consumption is depending on the type of units and the
actual voltage on the line.
The following table shows the current consumption in relation to the
actual line voltage (min. and normal respectively):
26
Allowed voltage is 12 – 30 V DC.
27
On each 1587 board are up to sixteen addresses available.