Clipsal C-Bus Bedienerhandbuch Seite 25

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1250SM0904R10/09 C-Bus™ Basic Programming
10/2009 C-Bus™ Products Training Course
© 2009 Schneider Electric. All Rights Reserved. 19
Maximum Load Calculations
To calculate the maximum load/number of loads that can be wired to a
channel of an output unit, we need to identify:
four parameters for maximum load on a dimmer
two parameters for maximum load on a relay.
The parameters needed to calculate the maximum load on a dimmer are
the:
VA of the electronic transformer
input capacitance of the electronic transformer
maximum VA of the C-Bus dimmer channel
maximum capacitance of the C-Bus dimmer channel.
The parameters needed to calculate the maximum load on a relay are the:
VA of the electronic transformer
maximum VA of the C-Bus relay channel
NOTE: To find the VA and input capacitance of electronic transformers,
contact the transformer’s manufacturer.
The maximum VA and capacitance of C-Bus output units are identified in
the table below.
Amps Per Channel
Max
Capacitance
Per Channel
Max VA Per
Channel
DIN rail dimmer
2
4
300 nF
300 nF
480
960
Professional dimmer
10
16
20
N/A
2400
3840
4800
DIN rail relay
10
20
N/A
2400
4800
Table 8 - C-Bus output unit parameters
To calculate the amount of loads that can be wired to a channel of a C-Bus
output unit, please follow the steps in the table below.
NOTE: To calculate the number of electronic transformers that can be wired
to a channel on a DIN rail relay or a universal, professional or architectural
dimmer, only calculate Step 1.
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