PROLEC EA Heightmaster + Manuale
561383-002 Issue 1.1
Prolec Ltd., 25 Benson Road, Nuffield Industrial Estate, Poole, Dorset, England BH17 0GB
EA Heightmaster +
Operators Guide
561383-002 Issue 1.1
3
This guide describes operation of the
PROLEC EA HEIGHTMASTER+
Model covered : MODEL NAME EA HEIGHTMASTER+
INTRODUCED JANUARY 2009
PART No 002146-000
Prolec supports a nationwide network of fully trained service engineers. Warranty claims, service work, technical
information and spare parts are available by contacting :
Prolec Ltd Telephone +44 (0) 1202 681190
25 Benson Road Fax +44 (0) 1202 677909
Poole Dorset BH17 0GB
Manufacturers original instructions
561383-002 Issue 1.1
4
Section Subject Page
1.0 System Description 6
1.1 RCI 6
1.2 Height Limiting 7
1.3.0 MIN Radius Limiting (Cab Protection) 9
1.3.1 Dual Redundancy Bucket System (Optional) 10
2.0 System Components 11
3.0 System Operation 13
3.1 Power On 13
3.2 Initialisation 13
3.3 Key Switch Positions 13
3.4 Key Switch in RCI Position 14
3.5 Key Switch in VARIABLE ADJUST Position 15
4.0 Key Switch in 3.7m and 4.6m positions - Fixed Height Limits 16
5.0 Functions of the RCI Key Switch Position 17
5.1 Time/ Date Mode 17
5.2 Rated Capacity Indicator Mode 18
5.3 Dig Depth Monitoring Mode 19
5.4 Change Duty Mode 21
561383-002 Issue 1.1
5
Section Subject Page
6.0 Functions of the VARIABLE ADJUST Key Switch Position 22
6.1.0 Setting the height limit at an operator derived equipment position 22
6.1.1 Setting the Height Limit to a Known Height 24
6.1.2 Switching OFF Height Monitoring 26
6.1.3 Variable Height Limit Active Indicators 27
6.2 No Protection Transport Mode 28
6.3.0 MIN Radius Limiting (Cab Protection) 29
6.3.1 Selecting the MIN Radius limits (Bucket or Attachment) (Cab Protection) 29
6.3.2 MIN Radius Limiting (Cab Protection) Dual redundancy Bucket System 30
7.0 Variable Height Limit - Key Switch in Variable Existing Setting Position 31
8.0 Height Alarm Conditions 32
9.0 System Test 33
10.0 Error Conditions 36
561383-002 Issue 1.1
6
1.0 System Description
EA Heightmaster+ provides a Rated Capacity Indicator (RCI), Height Limiting, Cab Protection, Dig Depth Monitoring and a Transpor-
tation mode for use on monoboom and triple articulated machines.
The system will allow the use of telescopic sections along with secondary booms and arms giving real time height measurements
with automatic/ manual duty switching.
A keyswitch is supplied allowing quick access to functions along with locking the system into certain modes.
Motion control is standard on the EA Heightmaster+ allowing motion to be cut to the boom, artic and arm for Height Limiting and Cab
Protection.
1.1 RCI
EA Heightmaster+ RCI mode displays the current maximum
safe working load (SWL) in tonnes. In RCI mode, the top line
of the display shows the current bucket pin radius and the
maximum safe working load at that radius. The bar graph on
the lower line will indicate the proximity of the current load to
the maximum available safe working load. The system
indicates an approach to overload and an overload condition
via internal and external alarms along with visual indicators on
the display.
To calculate the SWL, the radius of the bucket pin (Or Lifting
point) and the pressure within the boom lifting rams are used.
Radius
Pressure
561383-002 Issue 1.1
7
1.2 Height Limiting
The EA Heightmaster+ provides accurate monitoring of height and will alarm and cut motion at a user definable height or by selecting
one of the two predefined height limits of 3.7 and 4.6 m. These are indicated on a lamp bar. EA Heightmaster + uses a COMBI BOX
(see section 2.0) which allows the system to interface with hydraulic solenoid valves on the pilot control circuits to physically prevent
the height limit from being exceeded. The system is suitable for monoboom or triple articulation excavators and those with telescopic
Height Limit
Excavator operates uninhibited under
the set height limit.
When the excavator equipment reaches the
set height limit, the visual and audible alarms
will activate and the corresponding equipment
motion will be cut, halting further movement
into the height limit.
Raising of the Boom, artic or Arm
will be cut depending upon which
section is at the height limit.
The EA Heightmaster+ :
Lamp Bar
1. Allows the machine to work under restricted areas.
2. Can control the machine equipment motion to prevent
access into the restricted area.
3. Provides the user with a clear display of the
equipment height and of alarm conditions.
4. Allows the height limit to be
set from the safety of the cab.
561383-002 Issue 1.1
8
1.2 Height Limiting - Continued
The EA Heightmaster+ system calculates the height of each articulation at it‟s pivot pin and can take into account any part of the
articulation which extends above the pivot pin.
Guide to equipment pin positions used to determine height
Artic = Artic Pin
Arm = Arm Pin
Bucket = Bucket Pin
R = Residual height
Artic
Arm
Bucket
R
R
R
561383-002 Issue 1.1
9
1.3 MIN Radius Limiting (Cab Protection)
The Min Radius Limit limits the bucket pin from entering one of two predefined minimum radii. EA Heightmaster + uses a COMBI BOX
(see section 2.0) which allows the system to interface with hydraulic solenoid valves on the pilot control circuits to physically prevent
the Min Radius Limit from being exceeded. The Min Radii Limits are stored in the memory each time it is set. When the system is
switched on, the last Min Radius Limit selected will become operative. The yellow LED on the display is lit when the bucket radius is
selected and the green LED is lit when the attachment radius is selected. This function cannot be cancelled or adjusted by the opera-
tor. True Height and radius are given with telescopic section equipped machines.
1. Constantly monitors the bucket pivot pin radius
The EA Heightmaster+ :
3. Provides the user with a clear display of alarm conditions.
2. Motion is cut to prevent equipment from entering excluded zones
4. Allows two preset Min Radii Limits (Bucket and Attachment) to be
set from the safety of the cab via a key switch.
Attachment MIN Radius Limit
Bucket MIN Radius Limit
561383-002 Issue 1.1
10
Excavator operates
uninhibited outside
of the set Minimum
Radius Limits.
1.3.1 Dual Redundancy Bucket System (Optional)
As an option, EA Heightmaster + can monitor the position of the bucket / attachment (Bucket shown in example) and automatically ad-
just the current Cab Protection Limit by a preset distance. There are two states, crowded in and crowded out. This allows the bucket
pivot pin to come in closer to the cab if the bucket is crowded out.
When the bucket pivot pin reaches the set radius limit, depending on the attitude of the bucket, it will either cause
the visual and audible alarms will activate and the corresponding equipment motion to be cut at the inner limit or the
outer limit.
Bucket MIN Radius Limit
with the bucket crowded in
Bucket MIN Radius Limit
with the bucket crowded out
Indice
Altri manuali PROLEC Strumento di misura
