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DOK-CONTRL-ICL45L65L85-PR01-EN-P
Rexroth IndraControl L45/L65/L85 Control
8.3.2
External Power Supply Unit
8.3.3
24 V Voltage Supply
Setup without Electrical Isolation
DANGER
●
Any dangerous states of the system which might cause personal injury or
material damage must be prevented!
●
The rules and regulations for setting up EMERGENCY STOP equipment
in accordance with EN 60 204-1 must be adhered to!
●
Any automatic restart of machines after power return, e. g. after an EMER‐
GENCY STOP, must be excluded!
●
Protection for direct and indirect contact must be ensured by the measures
prescribed (connection to protective conductor, isolation, etc.).
All components of the IndraControl L45/L65/L85 are supplied with 24 V voltage
supplies.
The power supply unit must be safety-separated according to DIN EN 50 178,
section 5.2.18.1. Transformers must be designed with safety separation ac‐
cording to DIN EN 60 742.
If these requirements are complied with, the 24 V supply voltage is rated as
safety-separated extra-low voltage according to DIN EN 50 178, section
5.2.8.1. This voltage is designed either as safety extra-low voltage (SELV)
without ground connection of the reference conductor or as protective extra-
low voltage (PELV) with ground connection of the reference conductor.
A three-phase power supply unit with simple full-bridge rectification is sufficient.
The ripple voltage content must not exceed 5 %.
All 24 V voltage supply lines have to
●
be laid such that they are isolated from lines carrying higher voltages, or
●
be insulated to a particularly high degree, with the insulation having to be
designed for the highest voltage present (see EN 60 204-1: 1997, section
14.1.3).
Any peripherals, such as digital sensors/actuators, which are connected to the
interfaces of the IndraControl L45/L65/L85, have to comply also with the criteria
of safety-separated circuits.
The most easiest connection method is the establishment without an electrical
isolation between the internal logic and the peripheral supply.
In this case, a power supply unit is appropriate to supply the IndraControl L45/
L65/L85. It is not permitted to use an autotransformer to ensure compliance
with overvoltage category II.
0 V is grounded in the device!
Bosch Rexroth AG
Installation and Maintenance
Danger of personal injury and material damage
due to wrong installation!
55/81
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