Koso REXA Electraulic Xpac, Installation And Operation Manual

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Xpac
Installation Manual -- Version 5.1 (5/08)
20
REXA
Electraulic Actuators & Drives
5 ELECTRICAL INSTALLATION
B, C and 2C Power Modules
The Xpac consists of two major components, the Electraulic actuator
(cylinder & power module) and the control enclosure. The actua-
tor is installed on the driven device, while the enclosure is remotely
mounted. Connecting them are the module cable and the feedback
cable. Although these cables may be run within the same conduit or
seal-tite flex hose, it is preferable that power voltages be kept separate
from low level signal lines. User connections of electric power and
control signals are made at the enclosure.
5.1 Module Cable
The standard cable consists of 3 twisted pairs and a twisted triad. A
pair consists of a colored wire and a colored/black striped wire. These
wires are used for the motor (red and green pairs), for the cartridge
heater (black & white of the triad) included in most actuators and for
the optional by-pass solenoid (blue pair). The green/yellow striped
wire of the triad is the actuator ground.
Maximum length of the cable runs is determined by the resistance
loss for a particular gauge. For proper operation, it is recommended
that the following distances not be exceeded:
B size Power Module AWG Maximum Length
16 (Standard) 150 feet
14 225 feet
12 350 feet
C size Power Module AWG Maximum Length
16 (Standard) 300 feet
14 500 feet
12 750 feet
Shock hazard
Hazardous voltage levels are present in the module
cable. Insure that the electrical power to the actua-
tor is off before connecting the module cable.
Electrical installation of ½D, D and
2D Power Modules is contained within
Appendix X.
All color coding refers to the stan-
dard (16 AWG) cable only.
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