Koso REXA Electraulic Xpac, Installation And Operation Manual

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REXA
Electraulic Actuators & Drives
Xpac
Installation Manual -- Version 5.1 (5/09)
C-5
C.2 Manual Override
The Xpac has available three types of manual operators: Declutch-
able Handwheel, Declutchable Drill Drive and Geared Hand Crank.
All of them make use of the actuator’s hydraulic circuit. They will only
function if this system is in working order. For standard actuators,
clockwise rotation of the manual operator will retract the stem on a
linear unit and clockwise rotate the shaft (looking at the feedback
housing) on a rotary unit.
C.2.1 Declutchable Handwheel
The handwheel is mounted at the back of the motor on B & C size
modules. To operate, push the handwheel in and turn. Since the
handwheel must contact a slot on the outboard end of the motor shaft,
up to one-half revolution may be required before proper engagement.
The handwheel will declutch by moving outwards when released.
HANDWHEEL REVOLUTIONS
Power Module
Linear
(to move one inch / 1 000 lb
of rated thrust)
Rotary
(90° of rotation / 1 000 lb·in
of rated torque)
B ~75 ~200
C ~25 ~65
C.2.2 Declutchable Drill Drive
The drill drive is mounted at the back of the motor on B & C size
modules in place of the handwheel. To operate, connect the chuck
of an appropriate drill (electric, battery or pneumatic) to the 5/16”
HEX, push the drive in and turn. Since the drive must contact a slot
on the outboard end of the motor shaft, up to one-half revolution
may be required before proper engagement. The drive will declutch
by moving outwards when released.
DRILL DRIVE REVOLUTIONS
Power
Module
Linear
(to move one inch / 1 000
lb of rated thrust)
Rotary
(90° of rotation / 1 000
lb·in of rated torque)
Recommended
Drill Size
B ~75 ~200 .1 HP @ 500 RPM
C ~25 ~65 .25 HP @ 500 RPM
Operation of the spring failure inhibits
movement by a manual override. De-
press the button on top of the power
module to manually close the solenoid.
The solenoid must be in its normally
open position before returning the
Xpac to automatic operation. See
section 4.2.3.
Before operating any manual
override, make sure that the elec-
tric power is OFF.
On D size Power Modules, a
separate C size Power Module
with a handwheel, drill drive or
geared handcrank is added. See
Appendix X.3.