Overcurrent Protection - Siemens SINAMICS S120 Equipment Manual

Cabinet Configuration and EMC Booksize
8.3 24 V DC supply voltage
Component
2 x 5 A (+2 x DRIVE–CLiQ; +2 x brake)
2 x 9 A (+2 x DRIVE–CLiQ; +2 x brake)
2 x 18 A (+2 x DRIVE–CLiQ; +2 x brake)
Braking Module
Sensor Modules Cabinet
SMC10
SMC20
SMC30
Sensor Modules External
SME20
SME25
SME120
SME125
Additional system components
TM15 (without digital outputs)
per digital output
TM31 (without digital outputs)
per digital output
TM41 (without digital outputs)
per digital output
DMC20 (+ 5 x DRIVE-CLiQ)
VSM10
CBC10
CBE20
The values specified refer to Motor Modules/Line Modules with internal/external cooling.
8.3.4

Overcurrent protection

Cables on both the primary and the secondary side of the power supply unit must be
protected from overcurrent. Primary side protection must be implemented according to the
manufacturer's instructions. Secondary side protection must be rated to deal with the actual
conditions. In particular:
• Loading due to loads, possibly the simultaneity factor in response to machine operation
• Current carrying capacity of the conductors used and cables in normal and short-circuit
• Ambient temperature
• Cable bundling (e.g. laying in a common duct)
• Cable laying method to EN 60204-1
8-8
conditions
Typical current consumption [A
1.15
1.15
1.3
0.5
0.25
0.25
0.33
0.19
0.19
0.24
0.24
0.15
0.1
0.2
0.1
0.2
0.1
0.15
0.15
Equipment Manual for Booksize Power Units
Equipment Manual, (GH2), 03/2006 Edition, 6SL3097-2AC00-0BP3
]
DC