Koso REXA Electraulic Xpac, Installation And Operation Manual

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REXA
Electraulic Actuators & Drives
Xpac
Installation Manual -- Version 5.1 (5/08)
3
1 THEORY OF OPERATION
Overview
The
REXA Xpac
is a microprocessor controlled, self contained,
Electraulic (electro-hydraulic) actuator or drive designed specifi-
cally for modulating service. Hydraulic, electronic and mechanical
technologies are combined to achieve the state of the art in actuator
design.
The patented Flow Match System is simply described as a highly ef-
ficient method of pumping hydraulic fluid (motor oil Castrol Syntec
SAE 5W-50) from one side of a double acting cylinder to the other.
Once the correct position is reached, the motor shuts off. Power is
not required to maintain actuator position. The hydraulics are con-
trolled by a dedicated microprocessor contained within the control
enclosure. Software designed for the
Xpac
allows the user to set
actuator operation parameters.
The
Xpac
consists of two major components, the actuator (cylinder,
feedback and Electraulic power module) and the control enclosure.
The actuator is installed on the driven device, while the enclosure is
remotely mounted. Connecting them are the module cable and the
feedback cable.
Figure 1.A Xpac
Control Signal
4-20 mA
Other Analog and
Pulse Available
Power
Module
Motor
Programming
Keypad
Feedback
Sensor
Actuator
Electric Power
120 Vac,
220 Vac, 440 Vac,
48 Vdc, 24 Vdc
Control
Enclosure
8 8 8 8 8
E