Main Switch And Fuses - Bosch Rexroth IndraControl L40 Project Planning Manual

8-12
Installation and Maintenance

Main Switch and Fuses

IAS COMPONENTS www.ias-components.com info@ias-components.com
Dimensioning the Voltage Supply
When dimensioning the voltage supply, consider the maximum currents
(see DIN VDE 0100-523). A voltage of 20.4 ... 28.8 V must be applied
directly to the unit.
The voltage must be maintained even if
• there are variations in the line voltage, for instance caused by differing
loads of the power supply network,
• there are varying load states, such as short-circuit, normal load, lamp
load, or no load.
The maximum line cross-section for voltage supply is 1.5 mm
Main Switch
A main switch according to DIN VDE 0100 must be provided for the
IndraControl L40 as well as sensors and actuators.
Fuses
Fuses and circuit-breakers are intended to protect the supply lines in a
network. The voltage supply lines of the IndraControl L40 must be
protected by fuses. The sensor supply and the actuator supply should
each be protected by a separate fuse. If the supply lines are shorter than
3 m and are placed such that they are protected from ground faults and
short-circuits, it is not necessary to provide fuses.
Further criteria for the selection of protective devices are the following:
• Nominal voltage
• Temperature
• Internal fuse resistances
• Inrush currents
• Cable lengths
• External impedance of the power supply system
• Possible fault location
• Vibration
For additional information, please refer to:
Manual No. 32
VDE publications
Dimensioning and protecting lines and cables according to DIN 57 100,
VDE 0100–430 and –523.
Appropriate information is also provided by many manufacturers of fuses
and circuit-breakers.
IndraControl L40
2
.
DOK-CONTRL-IC*L40*****-PR02-EN-P