Crown Equipment Heavy-Duty Walkie Straddle Stacker SH 5500 Series - Manual (Page 5)

SH 5500 Series Technical Information
Performance
The SH 5500 Series incorporates
the latest generation AC drive
system enhanced with Access
1 2 3 technology. Crown’s
Access 1 2 3 technology
continuously monitors truck
systems and adjusts system
parameters to deliver optimum
performance and control. The
Access Display provides a conve-
nient interface for operators
keeping them informed of any
changes impacting truck perfor-
mance and allowing them to
choose from three performance
profiles when enabled.
Programmable performance
settings enable authorized
personnel to tune the lift truck
to different operator skill levels,
or to meet specific application
requirements. In addition,
up to 25 PIN codes can be
assigned to individual operators
and matched to one of the
pre-programmed performance
profiles if desired.
Electronic power steering allows
the operator to maneuver heavy
loads in tight spaces throughout
the day while minimizing fatigue.
Smooth travel and lift perfor-
mance combine with excellent
controls provided by the X10
handle to increase productivity.
The SH 5500 Series features
ramp hold and speed control
to improve operation on small
inclines or ramps. The ramp hold
feature uses the motor to prevent
truck movement when the brake
is released and no travel com-
mand is present. The ramp speed
control feature insures that actual
travel speed matches requested
travel speed. If the truck encoun-
ters an obstacle, a power boost
feature delivers up to 15 percent
more power than normally avail-
able for a full three seconds to
overcome the obstruction.
Mast
High visibility two and three-stage
mast design with angled cross
bracing and lift cylinders located
behind nested I-beams provides
maximum visibility for load
positioning and placement.
Crown’s staging cushions
coupled with lowering dampers
ensure smooth operation.
Rolled steel outer mast channels
and inner I-beams roll on canted,
steel, anti-friction roller bearings
for minimal current draw and long
life. Mast and chain rollers are
sealed and lubricated for life.
Telescoping mast sections nest
to reduce truck length. Heavier
mast cross bracing design
increases stiffness.
Serviceability / Durability
The Access display simplifies
service for technicians by
providing advanced diagnostics
without the need for separate
handsets. The display allows the
technician to view event service
codes and truck hours when
event occurred, perform system
calibrations or functional tests of
components, and make neces-
sary adjustments. Crown’s
InfoPoint System compliments
Access 1 2 3 diagnostics by
providing a Quick Reference
Guide, on-truck component
maps and information nuggets to
further simplify troubleshooting.
All wiring is color coded.
Removable steel power unit
doors are hinged for ease of
opening providing excellent
accessibility to the distribution
panel and all other components.
Steel covers provide added
protection to critical internal
components.
Removable steel battery covers
and hinged cover allow easy
access to the battery. Battery
removal can be accomplished
from either side. Battery compart-
ment rollers are standard.
The X10 handle incorporates a
vacuum die cast process using
high-grade aluminum and benefits
from structural webbing for maxi-
mum strength and durability.
Electrical System
A heavy-duty 24-volt fused
electrical system utilizes
microprocessor controls for
maximum energy efficiency,
reduced maintenance and infinite
speed control capability.
Access control modules for
travel, lift and steer are sealed
from dirt, dust and moisture
for trouble-free operation. All
contactors have been eliminated
except for the main line contactor.
A 175 amp battery connector with
disconnect handle is standard.
Hydraulic System
Heavy-duty hydraulic motor
(4.8 kw) is transistor controlled
and matched with a gear type
pump selected for optimum lift
performance and low noise.
Single-speed lift with program-
mable acceleration - deceleration
and programmable two-speed
lowering enables customization
to match operator preference or
application requirements.
Cylinder rods are hard-plated
chrome with polyurethane seals.
Relief valve tuned to capacity
protects all components in the
hydraulic system. Reservoir
incorporates an in-tank 10
micron return filter for removing
debris from oil.
Drive Unit / Brake
Heavy-duty gearbox with
helical spur input gear for quiet
operation.
Regenerative motor braking
is activated under a downhill
condition, during plugging or
when the directional control is
returned to neutral. An electro-
magnetic brake, spring applied
and electrically released, is
mounted on top of the drive
motor. The electro-magnetic
brake serves as the parking
brake and applies when the
control handle position moves
from the operating zone to brake
zone during truck operation.
Power Steering
Electronic power steering is pro-
vided by a heavy-duty AC motor
that pivots the drive unit when
steer tiller movement is detected.
Other Options
1. Amber strobe light
2. Travel alarm: reverse, forward
or both
Safety considerations and
dangers associated with audible
travel alarms and strobe lights
include:
• Multiple alarms and/or lights
can cause confusion.
• Workers ignore the alarms
and/or lights after day-in and
day-out exposure.
• Operator may transfer the
responsibility for “looking out”
to the pedestrians.
• Annoys operators and
pedestrians.
Dimensions and performance
data given may vary due to
manufacturing tolerances.
Performance is based on an
average size vehicle and is
affected by weight, condition of
truck, how it is equipped and the
conditions of the operating area.
Crown products and specifica-
tions are subject to change
without notice.