Voith 22000106810, Инструкция по установке и эксплуатации

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Instal
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91800271810, Protection
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EN / Pr
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0: Off
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WSR-D80112-S
Design and Functioning
Limitation of maximum value
In case of incorrect connection of the setpoint, e.g. by unintentional connection of 24
VDC to the plus-port of the setpoint input, the setpoint current is limited to an uncritical
value by means of an overload protector integrated in the VRM, thus protecting the
way valve control against damage.
24V Control and 24V Power function
During normal operation, both 24V connections have to be connected to the 24V
supply. To switch off the way valve, both 24V connections can be simultaneously
disconnected from the 24V supply.
However, if only the hydraulic part is to be switched into its preferential position with
the way valve and its actual value remote indication remaining active, it is sufficient to
switch off the 24V power; the 24V control may remain connected with the 24V supply.
Thus, a remote indication is available even in a switched-off condition, e.g. for
observation purposes.
Magnetic force switch-off
At setpoint w < 3 mA (wmin) the magnetic force FMag = 0 N and the control piston of
the slide valve are moved uncontrolled into the appropriate end position by the spring
tension FF. This connects outlet A with T and, for example, a valve that is coupled to
the actuator is kept safely in its closed position.