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Operating and installation instructions
Thrust actuator ARI-PACO
®
2G 1,6D/Y
4.2.2 Y Version
The motor and spindle can be moved up and down in manual mode by means of the
and
switch positions.
The valve final positions and the type of control (3-point or analogue) are automatically determined
by the electronics in an initialization run. An analogue signal must be present at the input during the
initialization run for analogue control.
The desired position can be specified by means of the analogue control input. The input is protected
against polarity reversal. It can be configured for a voltage 0 to 10 V or 2 to 10V signal using a
switch.
Two binary control inputs are provided for the 3-point signal. These inputs are designed for a wide
operating range with voltages from 12 V AC/DC to 250 V AC/DC.
The 3-point control signal takes priority over the analogue input signal, e.g. for fail-safe or anti-
freeze protection. If a signal is present at both inputs (double control), the control mode is
interrupted.
The spindle position is determined by means of non-contacting and non-wearing reflex sensors.
The
ARI-PACO
®
2G is driven by a brushless DC motor (BLDC). Its speed and position are
controlled by the electronics with Hall sensors to protect the gearbox by facilitating soft starting as
well as braking ahead of the desired position. The speed and positioning time can be varied with a
4-step slide switch.
Cable breaks are detected by the electronics also for a 0 to 10 V signal. The fail-safe behaviour in
case of a control signal failure can be set with a 3-step slide switch.
The actual position (position feedback) is output via the analogue output
.
The output is electrically
isolated.
Four unassigned relay outputs can be optionally supplied for alarm signals and connection to 24 V
to 250 V DC/AC voltage. By using gold-plated contacts, it is possible to switch both binary inputs
with a low operational current and switching currents up to 2 A. With 250 V AC operation, the gold
plating can be burned off once without any negative effects on this connection type.
