7 | Project configuration
STOBER
80
02/2019 | ID 442728.05
7.4
Example design for UL-compliant operation
The information and examples in this chapter are based on an input voltage of 480 V
AC
. For a
more detailed design, SERVOsoft is helpful mechanical and electrical sizing software for drive
systems.
The maximum number of devices in the device group is limited by certain variables. The
nominal output current I
2N,PU
of the supply module, the charging capacity C
PU
of the supply
module and the maximum copper rail length of 1500 mm must not be exceeded.
The following rules must be observed when determining the maximum number of devices and
the total load of the modular drive system:
§
The sum of all input currents of the drive controllers connected to the supply module must
not exceed the maximum nominal output current of the supply module.
§
The sum of the self-capacitance of the drive controllers connected to the supply module
must not exceed the maximum charging capacity of the supply module.
§
The total length of the copper rails used for the device group must not exceed 1500 mm.
Type
Charging capacity C
max
[mF]
PS6A24
5
PS6A34
10
Tab. 74: Maximum charging capacity of the PS6 supply module
Type
Self-capacitance C
PU
[mF]
SI6A061
0.18
SI6A062
0.27
SI6A161
0.47
SI6A162
0.94
SI6A261
0.94
SI6A262
2.25
SI6A361
2.25
Tab. 75: Self-capacitance of the SI6 drive controllers connected to the PS6 supply module
