PAT America DS 350 User manual

ww.patamerica.com PAT America, Inc.
LOAD MOMENT INDICATOR
DS 350 MODULAR/GRAPHIC
for Lattice Boom Cranes
SERVICE MANUAL
P/N 031-300-190-118 REV. -, 12/18/2000

Service Manual DS 350 Modular
© PAT Rev. – 12/18/00 // CSH. 190118_-.DOC
NOTICE
The information in this document is subject to change without notice.
PAT makes no warranty of any kind with regard to this material, including, but not limited to the implied warranties
of merchantability and fitness for a particular purpose.
PAT shall not be liable for errors contained in this manual or for incidental or consequential damages in
connection with the furnishing, performance, or use of this manual. This document contains proprietary
information, which is protected by copyright. All rights are reserved.
No part of this document may be photocopied, reproduced, or translated to another language without the prior
written consent of PAT.
MANUAL REVISIONS
REV DATE NAME DESCRIPTION
- 12/18/00 CSH Troubleshooting Manual created.
© 2000 PAT America, Chambersburg, PA 17201, USA

Service Manual DS 350 Modular
© PAT Rev. - 12/18/00 // CSH. 190118_-.DOC
TABLE OF CONTENTS
1GENERAL INFORMATION................................................................................................1
2WARNINGS .......................................................................................................................1
3SYSTEM DESCRIPTION...................................................................................................2
4GENERAL FLOW CHARTS...............................................................................................3
5ERROR CODES.................................................................................................................4
5.1 OPERATING ERRORS E01 THROUGH E06......................................................................................4
5.2 LOCKOUT FUNCTION ERRORS 07 AND 08......................................................................................5
5.3 ANALOG INPUT CHANNEL ERRORS................................................................................................5
5.4 ERRORS 31 AND UP.....................................................................................................................6
6FUNCTION LOCKOUT ....................................................................................................10
7NO DISPLAY....................................................................................................................11
8ANTI-TWO BLOCK PROBLEM........................................................................................13
9ANGLE SENSORS...........................................................................................................16
10LOAD READING..............................................................................................................18
11AREA DEFINITION INDICATION PROBLEM..................................................................20
12DATA TRANSFER CENTRAL UNIT <--> CONSOLE ......................................................21
13DRAWINGS .....................................................................................................................23
13.1 ELECTRICAL WIRING (DRAWING 1) PART 1................................................................................23
13.2 CENTRAL UNIT BREAKDOWN / PARTS LIST (DRAWING 2)............................................................25
13.3 CONSOLE DS350/1334 / PARTS LIST (DRAWING 3)...................................................................27
13.4 CENTRAL UNIT MAIN BOARD LAYOUT (DRAWING 4) ...................................................................28
13.5 CENTRAL UNIT ANALOG INPUT MODULE (DRAWING 5)................................................................29
13.6 CONSOLE CONNECTION BOARD (DRAWING 6) ...........................................................................30
13.7 FORCE TRANSDUCER (DRAWING 7)..........................................................................................31
13.8 AREA DEFINITION SWITCH (DRAWING 8) ...................................................................................31
13.9 BOOM JUNCTION BOX (DRAWING 9)..........................................................................................32
13.10 CABLE REEL (DRAWING 10)...................................................................................................33
14PROCEDURES................................................................................................................34
14.1 PROCEDURE 1: EPROM LOCATION AND INSTALLATION..............................................................34
14.2 PROCEDURE 2: MAIN BOARD REPLACEMENT.............................................................................35
14.3 PROCEDURE 3: ANGLE SENSOR ADJUSTMENT/REPLACEMENT....................................................36
14.4 TROUBLESHOOTING MOISTURE.................................................................................................37
14.5 THEORY 1: OPERATION OF ANGLE SENSOR...............................................................................39

General Information
© PAT Rev. - 12/18/00 // CSH. 190118_-.DOC
1
1 GENERAL INFORMATION
The PAT Load Moment Indicator (LMI) DS 350 has been designed to provide the crane operator with the
essential information required to operate the machine within its design parameters.
Using different sensing devices, the Load Moment Indicator monitors various crane functions and provides the
operator with a continuous reading of the crane’s capacity. The readings continuously change as the crane
moves through the motions needed to make the lift.
The LMI provides the operator with information regarding the angle of the boom, working radius, rated load and
the total calculated weight being lifted by the crane.
If non permitted conditions are approached, the DS 350 Load Moment Indicator will warn the operator by
sounding an audible alarm, lighting a warning light and locking out those functions that may aggravate the crane’s
condition.
Refer to operator’s manual 031-300-190-089 for console operating instructions.
2 WARNINGS
The LMI is an operational aid that warns a crane operator of approaching overload conditions and of over hoist
conditions that could cause damage to equipment and personnel.
The device is not, and shall not, be a substitute for good operator judgment, experience and use of accepted safe
crane operating procedures.
The responsibility for the safe crane operation shall remain with the crane operator who shall ensure that all
warnings and instructions supplied are fully understood and observed.
Prior to operating the crane, the operator must carefully and thoroughly read and understand the information in
this manual to ensure that he knows the operation and limitations of indicator and crane.
Proper functioning depends upon proper daily inspection and observance of the operating instructions set forth in
this manual. Refer to Section Pre-Operation Inspection and Calibration Verification of the operator’s manual.
The LMI can only work correctly, if all adjustments have been properly set. For correct adjustment, the
operator has to answer thoroughly and correctly all questions asked during the setup procedure in
accordance with the real rigging state of the crane. To prevent material damage and serious or even
fatal accidents, the correct adjustment of the LMI has to be ensured before starting the crane
operation.

Service Manual DS 350 Modular
© PAT Rev. - 12/18/00 // CSH. 190118_-.DOC
2
3 SYSTEM DESCRIPTION
The PAT Load Moment Indicator DS 350 consists of a central microprocessor unit, operating console, angle
sensor, force transducer, and anti-two block switches.
The system operates on the principle of reference/real comparison. The real value, resulting from the load
measurement is compared with the reference data, stored in the central processor memory and evaluated in the
microprocessor. When limits are reached, an overload warning signal is generated at the operator’s console. At
the same time, the aggravating crane movements, such as hoist up and boom down, will be stopped.
The fixed data regarding the crane, such as capacity charts, boom weights, centers of gravity and dimensions are
stored in memory chips in the central processor unit. This data is the reference information used to calculate the
operating conditions.
The boom angle is measured by the angle sensor, mounted in the boom base. The cable reel cable serves as an
electrical conductor for the anti two-block switches and force transducer signals.
The load on the boom is measured by force transducer mounted on top of the boom, close to the tip.
The interactive user guidance considerably simplifies the input of operating modes as well as the setting of
geometry limit values. Please refer to the PAT DS350 operator’s manual for the operation of the system.
The System consists of the following main components:
1. Central Unit
2. Cable for crane power
3. Cable to cable reel
4. Cable Reel
5. Junction box
6. A2B switch with weight
7. A2B bypass plug
8. Cable to force transducer
9. Force transducer
10. Cable to main boom angle sensor
11. Main boom angle sensor
12. Operator’s console with cable assembly
13. Cable for area definition sensor
14. Area definition sensor
Fig. 1: Components of the LMI system PAT DS 350/Modular

General Flow Charts
© PAT Rev. - 12/18/00 // CSH. 190118_-.DOC
3
4 GENERAL FLOW CHARTS
This section explains how to handle a problem that may arise with the PAT DS 350 Modular System.
The procedures are given in flowchart format for the following sections. Start with the general
flowchart below that will guide you to one of the detailed flowcharts shown in Sections 5 through 12.
The drawings and procedures that are referenced in these sections can be found in Section 13 and
14.
What’s Wrong?
Lever Lockout Activated Go to Section 6
No display
Anti-Two Block Problem
Load Reading Problem
Bad Data Transfer/Interference
Between Central Unit and Console
Area Definition Indication Problem
Go to Section 7
Go to Section 8
Go to Section 9
Go to Section 10
Go to Section 12
Angle Reading Problem
Go to Section 11
Error Code Displayed Go to Section 5

Service Manual DS 350 Modular
© PAT Rev. - 12/18/00 // CSH. 190118_-.DOC
4
5 ERROR CODES
5.1 Operating Errors E01 through E06
These errors are usually caused by operating in a way that is not allowed per the load charts.
Error Code Error Cause Elimination
E01 Fallen below
radius range or
angle range
exceeded
• Fallen below the minimum
radius or gone past the
maximum angle specified in the
respective load chart due to
hoisting up the boom too far
• Hoist the boom down to a
radius or angle specified
in the load chart.
E02 Radius range
exceeded or
fallen below
angle range
• Gone past the maximum radius
or fallen below the minimum
angle specified in the respective
load chart due to hoisting down
the boom too far
• Hoist the boom up to a
radius or angle specified
in the load chart.
E04
Operating
mode not
existing or non
permitted
slewing zone
• A non existing operating mode
has been selected
• Set the correct operating
mode for the crane
configuration in question
• The selected operating mode is
not available in the data
EPROM or blocked.
• Check programming of the
data EPROM
• The boom is in a non-permitted
slewing zone • Slew the crane into a permitted area.
E05
Boom length
not existing
• A non existing boom length has
been selected
• Correctly enter the boom
length according to the
attribution of the
operating state
• The selected boom length is not
available in the data EPROM. • Check programming of the data EPROM
E06 Radius range
exceeded or
fallen below
angle range
with luffing jib
operation
• Maximum radius as specified in
the load chart exceeded or
fallen below minimum angle due
to luffing down the luffing jib too
far
• Luff the jib to a radius or
angle specified in the load
chart.