e4595e−7
20
Fire & Security Products
Siemens Building Technologies Group
05.2003
7.1.5 Maximum number of I-Bus-modules
Table ’Maximum number of I-Bus-modules’
Stationtype
CI1142
CC1142
CC1143
I-Bus modules
...16 1) ...8 2)
...16 1) 3)
...16 1) 3)
1) Limited by software
2) Value based on experience (depends on cabinet size and/or 5V current consumption)
3) Battery charging unit (integrated in E3X10.) counts as one
I-Bus module
7.1.6 Limits of 5V supply
All I-Bus modules are supplied with 24V and 5V. The available current for the 5V, sup-
plied from main CPU is limited:
ÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁ
’Main CPU’
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Available current
ÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁ
E3X10x
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
1100mA
ÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁ
B3Q... / E3C011
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
250mA
Table ’5V-Current consumption of I-Bus modules’
I-Bus module
Current consumption
from ’Main CPU’
I-Bus module
Current consumption
from ’Main CPU’
E3M060 34mA E3G060 10mA
E3M071 (070) 34mA E3G070 10mA
E3M080 55mA E3G080 35mA
E3M111 (110) 25mA E3C011 (010) 12mA
E3M171 45mA B3Q321 (320) 8mA
E3M120 65mA E3I020* 100mA
E3L020 10mA E3I040 70mA
E3L030 35mA K3I090* 1mA
E3G050 8mA
* not an I-Bus module, but supplied via the ’Main CPU’
The given limits for the control terminal (CT/CI), the gateway (CK) and the AlgoWorks
utility programs have to be checked as well!
no
yes
select station with
higher capacity or
use an additional
station
number
of I-Bus-modules
< X ?
no
yes
select station with
higher capacity,
use an additional
power supply or
an additional
station
consumption
of I-Bus-modules
< X ?
the capacity of the main
CPU is checked