Panasonic Eco Solutions Nordic AB
MEW01622
Rev: -
EBL128 Planning Instructions V2.0.x
160
23
Current consumption
The different loop units have different current consumption. Note that
some units have much higher current consumption in "active state"
than in normal state. The tables below can be used:
To get a total current consumption overview.
To check the current consumption on the COM loop in relation
to the cable lengths, etc. See also drawing 128-11 and chapter
"COM loop cable length", page 159.
To check if the battery capacity is enough.
The current consumption is normally shown at nominal voltage (24 V
DC) in
Normal state
(quiescent) and in
Alarm state
(active). By
battery back-up (i.e. no mains) the rated voltage is 21
137
– 30 V DC.
See also chapter "Power supply", page 167.
NOTE!
A grey row in the tables = obsolete unit, can be found in old
installations.
C.i.e.
Normal state
(quiescent) (mA)
Alarm state
(active) (mA)
Control unit 4550 (backlight off/on)
138
51/109
67/125
8 zones expansion board 4580 (P.c.b. 9287-
2B
)
139
22.2
+ (see footnote)
22.2
+ (see footnote)
8 zones expansion board 4580 (P.c.b. 9287-
3A
)
140
15
15
8 relays expansion board 4581
15
15
Inputs and outputs expansion board 4583 (No units connected.)
15
15
RS485 transceiver (comm. module for Display Units) 4552
14
14
Web-server II 1598
60
65
137
There will, however, be voltage in the system down to a battery voltage
of approx. 15 V when it will be switched off in order not to damage the
battery.
138
Control unit electronics only, i.e. the COM loop units' current
consumption and other connected external equipment's current consumption
are not included.
139
Add 3.5 mA (quiescent) and 12 mA (activated) respectively, for each
zone line input used.
140
Add 0.5 mA per input (zone) for end-of-line capacitor (470nF) and 3 mA
per input (zone) for end-of-line resistor (10K).
Add 30 mA per input (zone) activated. (Each input has a 30 mA current
limitation, i.e. also for short-circuit on the line.)