Installation
Electrical installation
4.2.1 Protection of persons
4-20
L
EDSVS9332S-B EN 3.0
4.2.1.2 Isolation
The controllers have an electrical isolation (isolating distance) between the power terminals and the
control terminals as well as to the housing:
z Terminals X1 and X5 have a double basic insulation (double isolating distance, safe electrical
isolation to VDE0160, EN50178). The protection against contact is ensured without any further
measures.
z The control inputs and outputs of all controllers are electrically isolated.
Danger!
z Terminals X3, X4, X6, X7, X8, X9, X10 have a single basic insulation (single isolating distance).
z Protection against contact in the event of fault is ensured only by additional measures.
z If an external voltage supply (24V DC) is used, the insulation level of the controller depends on
the insulation level of the voltage source.
reinforced insulation
single basic insulation
Fig. 4-6 Basic insulation in the controller
4.2.1.3 Replacement of defective fuses
Replace defective fuses with the prescribed type only when no voltage is applied. ( 3-7)
z For single drives, the controller carries a hazardous voltage for up to three minutes after mains
disconnection.
z In a DC-bus connection, all controllers must be inhibited and separated from the mains.
4.2.1.4 Mains disconnection
Make a safety disconnection between the controller and the mains only via a contactor at the input
side.
z Please observe that all drives connected to the DC bus must be inhibited.
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