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Configuration of the connections is displayed on the
housing for Type 6524 and Type 6525 valves.
Information about assignment of the valves can be
written to the reference identification labels of the elec-
tronic base modules.
8.2
Electrical installation
WarnIng
risk of injury due to electric shock.
▶ Before working on the device or system, switch off the
power supply. Secure against reactivation.
▶ Observe applicable accident prevention and safety regula-
tions for electrical equipment.
The electrical connections of the valve block (load voltage,
backplane bus, grounding) are established automatically when
latched to the BaseUnits of SIMATIC ET 200SP. An exception
are the EVS connections of the electronic base modules with
"EVS" (see "8.2.1 "EVS" connection").
The power supply of the valve block occurs via the power bus
of the BaseUnits. The valve block only utilizes the "L+" and "M"
connections; the "AUX" connection is not used.
Preferably install a light-colored BaseUnit (type code BU...D
or BU...D/T) immediately to the left of the valve block (required
in combination with SIMATIC ET 200SP HA!). It can be used to
split the supply for the valve block. This additionally facilitates
adherence to allowable voltage tolerances and permissible
maximum currents.
Type 8647
Connecting
If further BaseUnits of SIMATIC ET 200SP are to be installed
to the right of the valve block (not permissible in combination
with SIMATIC ET 200SP HA!), the first BaseUnit must be a light-
colored BaseUnit (type code BU...D or BU...D/T) to supply the
necessary load voltage.
The required steps for electrical connection can be found in the
Siemens system manual "Distributed I/O system ET 200SP" or
"Distributed I/O system ET 200SP HA".
8.2.1 "EVS" connection
Danger
risk of injury due to unintentional movement.
If the EVS function is required to control safety-critical proce-
dures, a faulty EVS function can cause hazardous movements
of the actuators.
▶ Ensure that the EVS function is functioning correctly before
start-up.
In spite of an activated EVS function, actuators can be moved
through manual overrides of the valves. If the EVS function is
used to control safety-critical procedures:
▶ Take suitable measures to prevent unintentional activation of
the valves (e.g. lockable control cabinet or use valve variants
without manual override).
english
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