Parker Compact EHA - Preparation for Use

3
Instruction Manual
Compact EHA
Bulletin HY22-3200B
Parker Hannifin
Oildyne Division
Introduction and Specification
Introduction
This manual provides descriptive operation and maintenance
instructions for the Parker Compact EHA (Electro-Hydraulic
Actuator) manufactured by the Parker Hannin Corporation,
Oildyne Division. Any additional information may be obtained
from Parker by referencing the unit’s part number printed on
the nameplate or by contacting your local authorized Parker
Distributor.
Some of the Information in this manual may not apply to your
EHA. Information about custom units may require service and
application information from other sources.
Warning
This Instruction Manual should be read in its entirety and
understood prior to installing and operating the Parker
Compact EHA.
It is imperative that personnel involved in the installation,
service, and operation of the Oildyne units should be familiar
with how the equipment is to be used. They should be aware
of the limitations of the system and its component parts and
have knowledge of good hydraulic practices in terms of safety,
installation, and maintenance.
Explanation of Warning Labels
The following labels will be used in this Instruction Manual and
on all applicable Oildyne products.
Description
The Parker Compact Electro-Hydraulic Actuator (EHA) is a self-
contained, bi-directional DC motor driven gear or gerotor pump
with an integral hydraulic cylinder.
See Figures 1, 2, 3 and 5 for dimensional drawings.The internal
components are determined by the specications provided by
customers for each specic application.
See Figure 4 for a hydraulic schematic.
The life expectancy of Parker Oildyne units is directly tied to the
frequency of use, the product in which they are incorporated
and the application.
Unit weight will fall into a range from 3.6 kg (8.0 lbs) to 5.5 kg
(11.9 lbs) based on stroke length and motor size. See below:
Base unit by stroke length:
102 mm (4 in) 2.1 kg (4.7 lbs)
152 mm (6 in) 2.8 kg (6.5 lbs)
203 mm (8 in) 3.5 kg (7.6 lbs)
Add for motor:
12 VDC or 24 VDC 245W +1.5 kg (3.3 lb)
12 VDC or 24 VDC 560W +2.0 kg (4.3 lb)
EHA is intended to be used for specic applications requiring
actuation dened by the customer. Listed below are the
acceptable operation parameters:
Maximum forces for actuator extend:
21,350 N (4,800 lbf) with gear pump
Maximum forces for actuator retract:
15,570 N (3,500 lbf)
Note: The maximum forces listed above are the highest forces
available for an EHA unit. The maximum forces listed on
your unit label will match the specic unit congured for your
application.
Power range for intermittent duty:
12 or 24 VDC
.25 kW to .56 kW (.33 to .75 hp)
Operating temperature: -34°C to +65°C (-30°F to +150°F)
Storage temperature: -34°C to +93°C (-30°F to +200°F)
Maximum rate: 84 mm/sec (3.3 in/sec) at no load
EHA is intended for intermittent use only. It is not designed
for continuous operation.
Parker Hannin Corporation takes no responsibility for safety
of any unit if it is not used for the intended purposes detailed in
this Instruction Manual.
Examples of Abnormal Use:
• Use of unit with pressure other than that for which it was
intended
• Use with a higher or more frequent duty cycle other than that
for which it was intended
• Use with higher or lower Voltage than required for optimal
use
• Use in a different mounting orientation other than that for
which it was intended
• Use of uids other than those recommended
Preparation for Use
Unpacking and Checking
All units were carefully packed in boxes, and may or may not
be on skids. In any case, do not remove anything from the
skid or any packaging until it has been carefully checked for
damage that may have occurred in transit. Report all damage
immediately to the carrier and send a copy to the vendor.
Storage
If the unit is not going to be installed immediately, it should be
stored indoors, covered with a waterproof sheet.
There may be hydraulic liquid under
pressure. Do not open unit or break pipe
connections until hydraulic pressure has
been released.
Be careful; take precautions; examine
instructions before operation.
Cylinder
rod
One-piece
housing
Manual
Release
(Optional)
Pump &
Reservoir
Pilot
operated
check
Internal
relief
valves
Permanent
Magnet DC
Motor