Other Com Loop Units - Panasonic EBL128 Planning Instructions

Panasonic Eco Solutions Nordic AB
MEW01622 Rev: -
6.1.6
Galvanic isolator (2820).
mounted with the supplied back-box (IP67) and has two
compression glands for the cable entries. BASEEFA / ATEX
classification: II 1 G EEx ia IIC T4, T
per zone.

Other COM loop units

3366 External power supply. Conforms to EN54-4. The unit is
connected to a COM loop, i.e. it is monitored from EBL128 and
e.g. loss of the main power source will generate a fault in
EBL128. It can be used as power supply for external
equipment requiring 24 V DC with battery backup, e.g. a 3364
unit. It also has a "/Mains OK" output (normally low), intended
to be connected to the corresponding input on the 3364 unit.
A light grey metal housing (HxWxD, 288 x 400 x 95 mm).
There is space for two maintenance-free sealed Lead-Acid
backup batteries, 2 x 12 V, 7.5 Ah as the second power source.
Batteries with higher capacity (up to 60 Ah) have to be placed
outside the housing. There are cable inlets on the top, bottom
and back sides of the housing. Two compression glands are
attached.
The unit has a 24 V DC
equipment with up to 2.1 A or 0.85 A continuous current
consumption, at the same time as the battery charging is in
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progress. In case of no battery charging, the continuous
current consumption can be up to 4 A.
It has a number of security functions, e.g. against to high
current output and to low battery voltage etc.
information, see the Technical Description and Product Leaflet.
The COM loop address is set with an Address setting tool 3314
/ 4414 (when 3366 is powered). The unit has an address label
on which the programmed technical address is to be written.
The Address setting tool is also used for mode setting:
NORMAL mode: Used for 3366 in EBL128.
2330 mode: Not used in EBL128.
2312 mode: Not used in EBL128.
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The rated output voltage for the main power source (rectifier) is 24 V ±
1%. Max. ripple 500 mVp-p. The rated output voltage for the second power
source (the backup battery) is 18 – 28 V DC. NOTE! The voltage will,
however, decrease to approx. 15 V when the output will be switched off in
order not to damage the battery.
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A current consumption of 0.85-2.1 A allows only the "low current
charging mode", i.e. the battery capacity can be up to 27 Ah.
A current consumption < 0.85 A allows the "high current charging
mode", i.e. the battery capacity can be up to 60 Ah.
EBL128 Planning Instructions V2.0.x
The call point shall be surface
= -30 to +70°C. Max 20
a
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power supply output for external
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