LSI GS Series Operation and installation manual

English
GS820 Display
& GS Series Sensors
INSTALLER AND USER’S MANUAL
GM820_ENG_rev20130808 www.loadsystems.com
WIRELESS TECHNOLOGY & CRANE INSTRUMENTATION
DIVISIONS
WARNING! The GS820 system is designed as an operator aid and is in no way a
substitute for safe operating practice.
!
WARNING! Carefully read and understand this manual before proceeding.
!

2 The GS820 System2 The GS820 System
Read and understand the following:
For your safety and that of the people that come
into contact with LSI products, understand the
signicance of the instructions included in this
guide, respect all laws and regulations and comply
with applicable standards.
Pay particular attention to items bearing the alert
symbol !and the following words:
Warning: this denotes an instruction that if not
complied with may lead to serious injury or death.
Caution: this denotes an instruction that if not
complied with may lead to product failure or
property damage.
Important: this denotes an instruction that if not
complied with may lead to product performance
issues.
WARNING!
!
IMPORTANT!
!
CAUTION!
!
R
d
d
d
t
d
t
h
t
f
l
l
i
f
BEFORE PROCEEDING
WARNING! Installation must be made
in compliance with LSI instructions and
using LSI supplied components only. Failure
to install all parts, or replacing parts or
components with parts or components not
supplied by LSI, may lead to system failure,
serious injury or death.
!
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

OPERATION 3TABLE OF CONTENTS 3
1. INTRODUCTION ................................5
1.1 OVERVIEW ........................................ 5
1.2 START-UP ......................................... 5
2. INSTALLATION ..................................6
2.1 DISPLAY GS820 ................................ 6
2.1a Mounting Bracket ....................................6
2.1b Antenna Position .....................................7
2.1c Power Supply and Lockout Connection....7
2.1d Lockout Settings .....................................8
2.1e Password Settings ..................................9
2.2 LOAD CELL..................................... 10
2.3 ANGLE SENSORS .......................... 11
2.3a Mounting Procedure ..............................11
2.3b Angle Calibration Procedure No. 1:
Mechanical Set-Up.................................11
2.3c Angle Calibration Procedure No. 2: Correct
with the GS820......................................12
2.4 ANTI-TWO-BLOCK SWITCH.......... 12
2.4a Switch Bracket Installation LB011.................... 13
2.4b GS050 Installation .................................13
2.4c GS075B Installation...............................14
2.4d Chain Length Adjustment.......................14
2.5 LENGTH SENSOR CABLE REEL ..... 15
2.5a Maximum Boom Extension.....................15
2.5b Mounting the Cable Reel .......................15
2.5c Boom Length Calibration Procedure No. 1:
Mechanical Set-Up.................................16
2.5d Boom Length Calibration Procedure No. 2:
Correct with the GS820..........................16
2.6 RADIUS ........................................... 17
2.6a Radius Verification and Adjustment .........17
2.6b Radius Settings.....................................18
2.6c Basic Radius Parameters for a Lattice
Crane ...................................................19
2.6d Basic Radius Parameters for a Telescopic
Boom Crane ..........................................19
2.6e Advanced Radius and Height Parameters .20
2.6f Radius Parameters for a Lattice Crane with
Mast......................................................21
2.7 WIRELESS WIND SPEED SENSOR
GS020 ............................................. 22
2.8 WIRELESS LOAD PINS .................. 23
2.8a LP011, LP015, and LP026 ....................23
2.8b Load Pin Transmitter GS001 ..................23
2.9 LINE RIDING TENSIOMETER......... 24
2.9a Line Riding Tensiometer Installation.........24
2.9b Line Riding Tensiometer Installation on a
Swing Arm .............................................25
2.10 LOAD PINS, LINE RIDING
TENSIOMETERS AND
COMPRESSION CELLS:
CALIBRATION................................. 26
2.11 FOUR POINT LIFT........................ 27
2.11a Sum Load Indication............................ 27
2.11b Imbalance...........................................27
2.11c Slack Rope .........................................28
2.12 LIST AND TRIM ANGLE SENSOR29
2.12a Programming the GS820 for List and Trim
Indication ...............................................29
2.12b Mounting Instructions ..........................29
2.12c List and Trim Angle Calibration Procedure . 30
2.13 ROPE PAYOUT............................. 31
2.13a Rope Payout Calibration Procedure No. 1:
Mechanical Set-Up.................................31
2.13b Rope Payout Calibration Procedure No. 2:
Correct with the GS820..........................31
2.13c Rope Payout Limits..............................32
2.14 SLEW SENSOR INSTALLATION .. 33
2.14a Encoder Gear Verification..................... 33
2.14b Slew Encoder Location........................33
2.14c Slew Encoder Orientation ....................33
2.14d Slew Encoder Installation .....................33
2.14e Slew Transmitter Location .................... 34
2.14f Slew Transmitter Installation...................34
2.14g Cable Length Adjustment ....................34
2.15 SLEW SENSOR CALIBRATION .. 34
2.16 DATA LOGGER............................. 35
2.16a Recording Modes................................35
2.16b Date and Time ....................................35
2.17 SENSOR LIST .............................. 36
2.17a How to Add a Sensor to the GS820......36
2.17b How to Remove a Sensor from the
GS820 ..................................................36
2.18 NETWORK OPTIONS................... 36
2.18a Listen to Sensor Only ..........................36
2.18b Remote Monitoring.............................. 37
2.18c Repeater.............................................37
2.18d Wireless Sensor Update......................38
3. OPERATION.....................................39
3.1 DISPLAY GS820.............................. 39
1
I
NT
RO
DU
CT
IO
N
5
2
9
Li
R
id
i
T
i
t
I
t
l
l
ti
24
TABLE OF CONTENTS
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

4 The GS820 System
3.2 USB PORT ...................................... 39
3.3 KEYPAD .......................................... 39
3.4 DISPLAY LIGHTS............................ 39
3.5 MENU SYSTEM .............................. 40
3.5a Menu Numbers .....................................40
3.5b Menu Navigation ...................................40
3.5c Password Protection ............................. 40
3.5d Menu Layout.........................................40
3.5e Parts of Line..........................................41
3.6 RATED CAPACITY INDICATORS....... 41
3.6a Display Programming.............................41
3.6b Crane Rigging .......................................41
3.6c Chart Wizard ........................................41
3.7 DISPLAY SETTINGS ....................... 42
3.7a Units.....................................................42
3.7b Backlight Mode .....................................42
3.7c Wind speed units ..................................42
3.7d Rounding.............................................. 42
3.8 SYSTEM DIAGNOSTIC................... 42
3.8a System Sensors Diagnostic ...................42
3.8b Radio Network Diagnostic......................43
3.8c Lockout Diagnostic................................43
3.8d Display Diagnostic................................. 43
3.8e Digital Input Diagnostic...........................43
3.8f Current Alarms .......................................43
3.9 SYSTEM LIMITS ............................. 44
3.10 TARE............................................. 44
3.11 INFORMATION ............................. 44
3.12 MAST SETTINGS ......................... 46
3.13 WORK AREA MANAGEMENT .... 46
3.13a Fixed Limits .........................................46
3.13b Dynamic Limits....................................47
3.13c Virtual Wall ..........................................48
3.13d Limit Warning, Alarm and Lockout .......48
3.13e Chart Area Management...................... 48
3.13f How to Delete Work Area Limits ............48
4. USB TOOL .......................................49
4.1 DATA LOGGER TRANSFER FROM
DISPLAY.......................................... 49
4.1a Transfer From Display to USB.................49
4.1b Transfer From USB Device to PC ............... 49
4.1c Troubleshooting..................................... 49
4.2 UPLOAD CAPACITY CHARTS........ 50
4.3 DATA LOGGER VIEWER ................ 50
4.3a Installation on a PC................................ 50
4.3b Quick Start............................................50
4.3c Full Report ............................................50
4.3d Wind Report .........................................51
5. MAINTENANCE ...............................52
5.1 SENSORS ....................................... 52
5.1a Replacing Sensor Battery .............................. 52
5.2 ANTI-TWO-BLOCK SWITCH.......... 53
5.2a Replacing the GS050 Batteries .............. 53
5.2b Replacing the GS075B Battery .............. 53
5.3 REPLACING A SENSOR ANTENNA54
5.4 LOAD CELLS .................................. 55
5.4a Reading Accuracy .................................55
5.4b Load Testing .........................................55
5.4c Care .....................................................55
6. TROUBLESHOOTING......................56
7. CERTIFICATION NOTES .................57
7.1 IMPORTANT NOTES FOR
HAZARDOUS AREA CERTIFIED
COMPONENTS............................... 57
7.1a Specifications........................................57
7.1b Ensuring Safe Operation in Hazardous
Areas.....................................................57
7.1c Product Repair And Servicing ................57
7.2 EQUIPMENT MARKINGS ............... 57
7.3 CLASS 1 DIVISION 1 AND DIVISION
2 CERTIFICATIONS ........................ 58
7.4 ATEX CERTIFICATIONS.................. 59
7.5 FCC AND IC – INSTRUCTIONS TO
THE USER....................................... 59
7.6 EMI / EMC....................................... 60
7.7 ENVIRONMENTAL CONDITIONS... 60
7.8 CE.................................................... 61
7.8a Declaration of Conformity.......................61
7.8b CE Safety .............................................61
8. GS820 MENU OUTLINE..................62
9. LSI PRODUCT LIMITED WARRANTY -
APRIL 1ST, 2013 .............................64
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

INTRODUCTION 5
1.1 Overview
The GS820 system includes the cabin mounted
GS820 radio display and compatible crane
mounted sensors. The GS820 creates a two-way
radio network with the sensors to bring required
lift data to the operator. Hoist load, boom and jib
angles, boom length, wind speed and pending
two-block can be detected and then indicated
to the operator in real time. Working load radius
can be calculated and compared to a rated
capacity chart (if programmed). Furthermore the
GS820 can be programmed to generate warnings,
alarms and lockout commands, all triggered by
adjustable thresholds and limits. All these events
can be recorded by the data logger with a time
and date stamp. The exact operational function
of the GS820 system depends on the sensor
conguration used and the rated capacity charts
programmed (where applicable). The GS820
includes a USB port to facilitate software and
chart updates and data logger downloads using a
USB mass storage device (USB key).
1.2 Start-Up
The GS820 must be correctly programmed for the
system sensors installed. Once a reliable radio
communication network is established, the display
lights will remain lit without ashing. If a sensor
is missing or has a problem, a message will be
displayed on the LCD (liquid crystal display).
This process may take up to one minute. The delay
is created by the battery management function.
Press Bypass/Exit to temporarily bypass crane
function lockout caused by a missing sensor. If
rigging requires a crane conguration outside
of the limits dened by the rated capacity chart
selected, out of chart alarms can be avoided by
placing the display in “rig mode”. If the rig mode
is enabled in the display, press Bypass/Exit for
10 seconds to activate it. If the rig mode is not
available, contact your LSI representative or LSI
technical support representative.
1
1
O
i
1
2
S
t
t
U
1. INTRODUCTION
GS050 Anti-Two-
Block Switch
GS101 Angle and
Length Sensor
GS820 Display
GC Series
Load Cell
GS075B All-In-One
Anti-Two-Block
Switch and weight
Figure: Key components in a typical system installation. Your product may vary. Not to scale.
WARNING! The GS820 system is designed as
an operator aid and is in no way a substitute
for safe operating practice.
W
!
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

6 The GS820 System
2.1 Display GS820
2.1a Mounting Bracket
1. Determine the mounting location; the display
may be installed either inside or outside the cab.
It can be mounted on the dash, on a sidewall,
or on the ceiling of the cab. To ensure reliable
radio communication between sensors
and the GS820, the antenna should not be
in contact with metal and should have a
direct and clear line of sight to the sensor
antenna. The mounting bracket requires a at
surface of at least 2.5 inches in diameter on
both sides and where the back of the surface
is accessible in order to tighten the nuts.
2. Drill 1/4-inch boltholes through the mounting
surface with a 1/4-inch bit following either the
two, three, or the four holes conguration.
3. Install the display with bolts. Add washers and
lock nut behind the mounting surface and tighten
sufciently (bolts, nuts and washers not included).
4. Loosen the wing nut of the bracket arm to
adjust display orientation to facilitate viewing
by the operator and then tighten it back up.
2. INSTALLATION
Cab mounting
surface
Wing
Nut
Figure: Install the display and adjust orientation
10.73
8.75
7.37
7.23
2.44
2.25
Adjustable
Ram-Bracket
with dual ball joints.
Part number:
LB002B
Rugged
aluminium
enclosure
Two way radio
system
Waterproof
design
Field replaceable
antenna
Part number: TA008
5.74
Figure: Display GS820
Figure: Display dimensions (inches). Not to scale.
Figure: Display mounting bracket footprint. Not to scale.
0.750 0.750
0.906
ø0.218
ø2.5 in. min.
flat surface
120° TYP
0.594
0.594
IMPORTANT! Do not crack or puncture
the membrane fascia. The GS820 display is
splash and rain proof. Waterproong depends in
part on the integrity of the membrane.
IMPORTANT! Do not power wash the
display. The GS820 display is not designed to
withstand high-pressure washing devices that
can erode the membrane fascia seal or create
ssures in the membrane fascia. Power washing
the display voids warranty coverage.
!
Note: If the nuts are on the outside of the cab, caulk
with silicone between the washers and the cab to
prevent water entry.
WARNING! Installation must be made
in compliance with LSI instructions and
using LSI supplied components only. Failure
to install all parts, or replacing parts or
components with parts or components not
supplied by LSI, may lead to system failure,
serious injury or death.
!
Note: Refer to the Operation section for detailed menu navigation instructions for all calibration procedures.
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

INSTALLATION 7
2.1b Antenna Position
For optimal performance the antenna should be
positioned on its side such that it is parallel to
the sensor antennas (but not pointing directly to
or directly away from them).
1. Adjust the antenna position with the articulating
base.
2. The antenna should have 5 inches of clear
space all around it.
3. The antenna should have an unobstructed line of
sight to all sensor antennas at all boom angles.
The DC power should not exceed 30 VDC and the
AC should be negligible (<1VAC).
2.1c Power Supply and Lockout
Connection
1. Connect the black wire (ground) to the negative
terminal of the battery or the panel connection;
alternatively bolt the black wire to the body of
the machine with a 1/4-inch or 5/16-inch bolt.
The ground connection must be strong enough
to sustain 3 amperes.
2. Connect the red wire to a fused accessory
source, rated at least 3 amperes, that supplies
+12 or +24 volts when the machine is in use.
The GS820 will automatically detect the voltage
level and adjust itself.
Power Supply
or Battery
+12 V or +24 V
Black
wire
Red wire
White wire
Orange wire
Green wire
Blue wire
Lockout #1
Lockout #2
Lockout #3
Lockout #4
Yellow cable
To GS820 power supply
connector (Step 5)
Figure: Connection without lockout.
3. Lockout number 1 (if required): connect the
white wire to a Bosch relay coil terminal.
Connect the other coil terminal of the relay to
the ground. When operating properly the white
wire will energize at the battery positive level.
Current over 1 ampere on the white wire
triggers an auto re-settable fuse. Current ow
will resume several seconds after the short
circuit is eliminated.
4. Lockouts number 2, 3 and 4 (if required): these
wires function in the same way as the white
wire described in step 3 above. Each lockout
wire can be triggered by a different set of alarm
conditions; see the Lockout Settings sub
section of this manual.
n.c.
n.o.
co
Power Supply
or Battery
+12 V or +24 V
Black
wire
Red wire
White wire
Orange wire
Green wire
Blue wire
Lockout #1
Lockout #2
Lockout #3
Lockout #4
To valve coil if
normally open is
required
Yellow cable
To valve coil if
normally closed
is required
Bosch relay
Figure: Connection with white wire lockout and recommended
Bosch relay.
Troubleshooting: if no voltage is present on the
white wire remove the load connected to the lockout.
CAUTION! Overvoltage will void warranty.
Use this power supply verication procedure.
Check the power from the crane in the DC and AC
modes under the following conditions:
• Engine start-up
• Engine idling
• Engine revving up, during complete
process, not just when it is revved up
• Engine revving down, same process as
above
• Engine shut-down
!
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

8 The GS820 System
5. Connect the yellow cable to the GS820. The
connector is waterproof and well rated for
external environments. Simply connect the
cable to the display and gently tighten the nut.
Do not put a kink in the yellow cable where
it enters the connector; any bend in the cable
at the base of the connector must not be so
severe as to break the internal connections
where the cable meets the connector. The
power cable requires about 4 1/2 in. behind
the display to protect the connector.
2.1d Lockout Settings
Warning, alarm and lockout control is programmed
in this menu. The GS820 can be programmed
to generate alarms and lockouts for almost all
programmed limits and two-block. Furthermore,
warnings are generated when approaching
programmed load limits and rated capacity (when
applicable).
Warning level. When gross load (regardless of
tare value) approaches the maximum limit for a
load sensor, an intermittent warning message is
generated on the LCD. The maximum limit for a
load sensor is the lower of; a) the operator set limit
(Limit Menu), and b) the working load limit (WLL) if
rated capacity charts are used. The proportion of
a limit that must be reached to trigger the overload
warning is the warning level. The default factory
setting for the warning level is 90%.
1. Go to menu 4L) LOCKOUT SETTINGS.
2. Enter the user password (using Back, Next, Up
and Down as described in Password settings
section) and press Enter.
3. Select 1) WARNING LEVEL and press Enter to
modify.
4. Use Up and Down to adjust the warning level
and press Enter to conrm any change.
3. Press Down to select 2) ALARM LEVEL or press
Exit to return to the operation display.
Alarm level. All programmed and rated capacity
limits and two-block will generate an audible
alarm when the alarm level is reached. Alarms will
generate an intermittent alarm message on the
LCD. The proportion of a limit that must be reached
to trigger an alarm is the alarm level. The default
factory setting for the alarm level is 100%.
1. In menu 4L), select 2) ALARM LEVEL and press
Enter to modify.
2. Use Up and Down to adjust the alarm level and
press Enter to conrm any change.
3. Press Down to select 3) LOCKOUT LEVEL or press
Exit to return to the operation display.
Lockout level. All programmed and rated capacity
limits and two-block can generate a lockout signal
when the lockout level is reached. By default the
lockout wires carry crane power supply voltage as
long as the display is in safe condition (to inverse
lockout polarity see menu 4L) 8) LOCKOUT RELAY
INVERTED). When a lockout level is reached voltage
is cut on all lockout wires linked to the lockout
condition (see menu 4L) 4) through 4L) 7)). The
proportion of a limit that must be reached to
trigger lockout is the lockout level. The default
factory setting for the lockout level is 105%.
1. In menu 4L), select 3) LOCKOUT LEVEL and press
Enter to modify.
2. Use Up and Down to adjust the lockout level
and press Enter to conrm any change.
3. Press Down to select 4) WHITE WIRE LOCKOUT
TRIGGER or press Exit to return to the operation
display.
Lockout triggers. Different events can be
programmed to cut voltage on the lockout wires of
the yellow cable. Each lockout wire can be linked to
a different combination of lockout conditions.
1. In menu 4L), select 4) WHITE WIRE LOCKOUT
TRIGGER and press Enter to modify.
2. Select which alarm conditions will trigger
lockout on the white wire (see tables below).
3. Add the lockout codes for the selected alarms
together to nd the lockout trigger number.
4. Use Up and Down to adjust the white wire
lockout trigger number and press Enter to
conrm any change.
5. Press Down to select the next wire trigger line
and repeat steps 1 through 5, or, press Exit to
return to the operation display.
Yellow cable
Black wire: Negative (ground)
Orange wire: Lockout #3
White wire: Lockout #1
Blue wire: Lockout #4
Red wire: Positive 12 or 24 volts
Green wire: Lockout #2
Figure: GS820 power supply connector
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

INSTALLATION 9
Table: Default Triggers
Lockout Wire Default Trigger
White ............................4301
Green..............................34
Orange ..........................32767
Blue ................................0
Table: Lockout Codes
Condition Code
Maximum wind speed ..................1
Minimum angle .......................2
Maximum angle .......................4
Overload ............................8
Work area warning approach............16
Maximum radius .....................32
Maximum length .....................64
Two-block .........................128
Maximum wind gust..................256
Maximum rope payout................512
Slew Left Limit .....................1024
Slew Right Limit ....................2048
Maximum tip height .................4096
Maximum imbalance factor ...........8192
Table: Lockout Codes (Continued)
Condition Code
Minimum slack rope................16384
Minimum list angle.................32768
Maximum list angle ................65536
Minimum trim angle ...............131072
Maximum trim rope ...............262144
Minimum mast radius .............524288
Maximum mast radius ............1048576
Minimum load limit...............2097152
Slew Warning Left ...............4194304
SlewWarningRight ...............8388608
ChartValue ....................16777216
Chart Value Reversed ...........33554432
Table: Example No. 1
Maximum radius .....................32
Minimum angle ..................... +2
Default green wire trigger............ =34
Table: Example No. 2
Maximum wind speed ..................1
Maximum angle .......................4
Overload ............................8
Maximum length .....................64
Two-block .........................128
Maximum tip height ............... +4096
Default white wire trigger .......... =4301
Lockout relay inversion. By default the lockout
wires carry crane power supply voltage as long as
the display is in safe condition. When lockout is
triggered voltage is cut on the lockout wires linked
to the lockout condition.
Exceptionally the lockout relay can be inverted
so that lockout wires carry no voltage in safe
condition and carry crane power supply voltage
when in a triggered lockout condition. In this case
if the display fails, crane functions will not lockout.
1. In menu 4L), select 8) LOCKOUT RELAY INVERTED
and press Enter to modify.
2. Use Up and Down to switch between “YES” and
”NO” and press Enter to conrm any change.
3. Press Exit to return to the operation display.
2.1e Password Settings
Two levels of access are available: administrator
and user. The administrator password is required
to change the user password. In the event both
the administrator and the user passwords are
lost please call LSI technical support. Menus
accessible from the operation display can be
individually protected by the user password.
1. Go to menu 4) INSTALLATION and select 4H)
PASSWORD SETTINGS.
2. Enter the administrator password and press
Enter.
3. Select 1) ADMINISTRATOR PASSWORD and press
Enter to modify.
4. Use Up and Down to adjust the administrator
password. Press Enter to save any changes.
WARNING! Inverting lockout relays will
allow crane operation in the event the GS820
display fails. Operating a crane without a
functioning anti-two-block system and load
and angle indication is dangerous and may be
against the law.
a
!
Lkt
l
i
i
Bdf ltthl k t
WARNING! A hard stop to crane rotation may
cause loss of stability, structural damage to the
machine, property damage, personal injury or
death. The slew warning triggers can be used to
engage a damping system to safely slow down
crane movement before slew limits are reached
within machine tolerances at expected duty cycle
speeds. In all cases the crane manufacturer’s
recommendations should be followed.
!
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

10 The GS820 System
5. In menu 4H), select 2) USER PASSWORD and press
Enter to modify.
6. Use Up and Down to adjust the administrator
password. Press Enter to save any changes.
7. In menu 4H), select 3) TARE PROTECTED and
press Enter to modify.
8. Use Up and Down to switch between “YES” and
“NO” and press Enter to save any changes.
9. Repeat steps 7 and 8 to adjust password
protection for each menu as required. Press
Enter at any time to save changes made.
Press Exit at any time to return to menu 4)
INSTALLATION. If there are any unsaved changes
the display will request conrmation: press
Enter to save before quitting or press Exit to
quit without saving.
2.2 Load Cell
1. Install load cell bushings as supplied by LSI.
Assembly of the load cell and adapter plates
must be congured to the pin size required
by the specic dead end or hook to which it
is to be attached. In all cases, the bushings
supplied by LSI must be used where possible
to adapt the holes in the load cell to the pins.
Bushings must be secured with the two allen
screws provided, one on each side of the load
cell.
2. As required, place a washer between adapter
plate and pin head or nut on each end of the
pin that links the adapter plates to the load
cell. Additional washers should be added
equally to each end of the pin as required to
inhibit excessive lateral movement of load cell
(maximum 1/8” total movement) and adapter
plates along the pin.
3. If the dead end or hook to be connected to
the adapter plates requires a larger opening,
washers may be placed between the load cell
and the adapter plates equally on both sides of
the load cell.
4. In all cases the washers must be placed
symmetrically such that the load cell is
centered on the pins to avoid uneven loading.
5. Secure the pins with the nuts and cotter pins
provided.
6. A qualied (lift supervisor or crane inspector)
person must verify every lift assembly before
rst use and periodically thereafter (one to
twelve months), including before any new,
difcult or otherwise different lift.
Crane dead
end
Plate kit for
loadlink
Loadcell
Wedge socket
to loaded cable
C/C
Figure: Typical load cell and adapter plate assembly installed.
WARNING! Capacity and safety factor for
load cells and adapter plate assemblies are
calculated for load along the intended axis of
load (vertical with the assembly hanging free);
side loading may cause load cell and adapter
plate assembly to fail, causing load to drop.
Lifts must be rigged such that the load cell
and adapter plate assembly hang free and not
be subjected to side loading.
!
IMPORTANT! The load cell antenna should
not be in contact with metal.
IMPORTANT! For optimal performance and
signal reception, the GS820 load cell antenna
should have a clear line of sight to the GS820
display.
IMPORTANT! The load cell antenna should
point to the left or to the right of the boom; it
should not point directly to, or away from, the
GS820 display.
!
CAUTION! The load cell must be centered
on the pins to avoid uneven loading on the
plate kit assembly.
C
!
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

INSTALLATION 11
2.3 Angle Sensors
2.3a Mounting Procedure
The GS010 series angle sensors can be turned on
by starting up the GS820 display to which they are
programmed. The angle sensor can then assist in
levelling itself with the red and green LED.
1. Determine the angle sensor position.
a. The GS010-01 boom angle sensor can
be mounted on either side of the boom.
b. The GS010-02 360° angle sensor must
be mounted on the port side of the jib.
c. The angle sensor must be level with the
boom or jib centerline.
d. The top / bottom axis of the angle sensor
must be within 15 degrees of vertical.
e. The angle sensor should have a clear line
of sight to the cabin mounted display.
f. The angle sensor antenna should not
contact a metal object.
2. Install the welding pads; keep the angle sensor
at least three feet from the weld site and any
connecting metal objects while welding.
3. Mount the angle sensor to the weld pads with
the screws and washers provided.
4. Verify angle indication on the GS820 LCD.
5. If the angle displayed by a GS010-01 boom angle
sensor is a high negative value, then tilt the angle
sensor up over 45 degrees, and then tilt back
down to horizontal. The GS010-01 boom angle
sensor will automatically detect on which side of
the boom it is installed and correct angle indication
accordingly.
2.3b Angle Calibration Procedure
No. 1: Mechanical Set-Up
1. Level the boom such that it is perfectly
horizontal; use a high quality bubble or digital
angle sensor. If the GS820 display indicates
0.0 degrees then angle calibration is complete;
if not then continue to step 2.
Figure: Typical operation page with boom angle indication
IMPORTANT! Keep the angle sensor away
from the boom and any connecting metal
structures when welding the metal lugs to
the boom. Proximity to welding may cause
permanent damage to the angle sensor and
prevent accurate angle indication.
I
!
WARNING! The angle reading may be
affected by vibration and may fluctuate; the
angle sensor should not be installed in close
proximity to a high RPM electric motor or other
source of high frequency vibration.
!
WARNING! Failure to ensure the boom is
levelled will result in false reading of the
crane’s radius hence the risk of structural
failure of the crane or crane tipping over.
!
Cabin
Boom
Angle Sensor
Boom
C
L
Boom
Angle Sensor
Cabin
Boom
Angle Sensor
Cabin
Wedge
Figure: Wedge used to mount the angle sensor with its top/
bottom axis within 15° of vertical (typical installation) - Front View
Figure: Angle sensor level with the boom (typical installation) -
Side View
Figure: Angle sensor top/bottom axis within 15° of vertical
(typical installation) - Front View
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

12 The GS820 System
2. For GS011 angle/length sensors only: Carefully
remove the cover of the GS101 cable reel.
3. Loosen the mounting screw in the slotted hole
of the angle sensor mounting plate.
4. Pivot the angle sensor slightly until angle
indication is correct. Repeat the angle
validation (step 1) as required.
2.3c Angle Calibration Procedure
No. 2: Correct with the GS820
Calibrate angle indication by adjusting the trim (offset)
value in the GS820 display; the GS820 will then
communicate the updated trim value to the sensor.
1. Position the boom at a precisely known angle.
2. Go to menu 4) and select 4B) SENSOR CALIBRATION.
3. Enter the user password and press Enter.
4. Select 4B2) MANUAL PARAMETER ADJUSTMENT.
5. Use Up and Down to select the angle sensor
to be calibrated and press Enter.
6. Select 2) TRIM:and press Enter to modify.
7. Use Up and Down to modify the trim value.
Example: If angle indicated is 0.3° over the actual
angle, adjust the trim value to -0.3.
Example: If angle indicated is 0.9° below the actual
angle, adjust the trim value to 0.9.
8. Press Enter to save changes.
9. Press Exit to return to the operation display.
10.Verify accurate angle indication at both very
high and very low angles.
2.4 Anti-Two-Block Switch
Verify the anti-two-block switch is programmed to
the GS820 display. Switches shipped with displays
are pre-programmed in the factory. Test: if the
switch has been programmed to the display then
the display will go into two-block alarm when the
switch is released. Press Bypass to silence the
alarm until the next two-block event or simulation.
If the switch has not been programmed to the
display, this should be done before proceeding
with installation. See the section How to Add a
Sensor to the GS820.
Figure: Angle Calibration Procedure No. 2
Fig
ure
Ang
le
Cal
ibr
ati
on
Pro
ced
ure
No
2
Note: When the angle sensor is moved very
slowly, it may take several seconds to see an update
at the GS820 display. Instead move the sensor up
a couple of degrees, and then bring it back down
to where it should be. The small light on the angle
sensor flashes when it transmits a new value to
the display. To set the angle sensor to transmit
continuously for 5 min., go to menu 4B1) Automatic
Calibration and select the angle sensor.
WARNING! Keep the anti-two-block switch
away from the boom and any connecting
metal structures when welding mounting
brackets to the boom. Proximity to welding
may cause permanent damage to the anti-
two-block switch and render the anti-two-
block system unsafe.
W
!
IMPORTANT! To ensure reliable radio
communication between the anti-two-block
switch and the GS820 display the following
conditions must be respected:
• The antenna of the anti-two-block switch
should not be in contact with metal.
• The anti-two-block switch antenna should
point to the left or to the right of the boom;
it should not point directly to, or away from,
the display.
• The anti-two-block switch antenna should
have a clear line of sight to the display;
in most cases this means mounting the
sensor on the same side of the boom as the
operator’s cab.
c
!
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

INSTALLATION 13
2.4a Switch Bracket Installation LB011
Position the sensor mounting bracket. To ensure
that the sensor can pivot securely on the mounting
bracket throughout the full range of boom angle, the
mounting bracket must be positioned at a 30° from
horizontal with the boom parallel to the ground and
such that the locking pin of the mounting bracket
points up. Bolt or weld securely.
If the head sheave diameter is between 8 and 16
inches (20-41 centimeters) then two mounting
brackets will be required to permit both live and
dead end mounting.
For live end mounting on multiple sheave blocks with
sheaves greater than 16 inches (41 centimeters) in
diameter consult your service representative.
For fast line weight installation place the anti-two-
block switch mounting bracket directly below the
sheave center as low and as close to the edge
of the sheave as possible. Place the fast line
weight mounting bracket on the opposite side of
the sheave with the chain hole pointing down and
lined up opposite the pivot of the anti-two-block
switch mounting bracket.
2.4b GS050 Installation
1. Mount the GS050 on the bracket and verify
that the GS050 can rotate freely through all
possible boom movements without being able
to come off the bracket.
2 . Install the weight and chain assembly around
the cable and attach the other end of the chain
to the GS050. Tighten all the chain links of the
chain assembly.
3. Adjust chain length as required, see sub-section
Chain length adjustment.
4. Test system function.
ø0.38
Pivot Center
(Anchor shaft)
30°
2.50
2.125
0.375 0.25
2.5
1.9375
0.75
Figure: Bracket footprint and orientation. All dimensions are in
inches. Not to scale.
Up to 8 in. (20 cm)
diameter Boom
base
Mount bracket below
and behind sheave
center.
Figure: Anti-two-block switch placement on a telescopic boom
Boom
base
Mount bracket 4 in.
(10 cm) below sheave
center.
Figure: Jib, rooster or other extension; anti-two-block switch
placement for single part of line operation only
Boom
base
Mount bracket directly
below sheave
center as low as
possible.
Fast line
mounting
bracket
Fast line
weight
Switch bracket
Front View
Chain
hole
Figure: Fast line weight installation
8-16 in. (20-41 cm)
diameter Boom
base
Mount bracket 4 in.
(10 cm) below sheave
center.
Figure: Anti-two-block switch placement for live end mounting
on a lattice boom
8-16 in. (20-41 cm)
diameter Boom
base
Dead
end pin
Mount bracket 4 in.
(10 cm) in front of the
dead end pin.
Figure: Anti-two-block switch placement for dead end
mounting on a lattice boom
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

14 The GS820 System
2.4c GS075B Installation
1. Install the GS075B on the LB011 (switch
bracket) already installed on the crane boom
(step 2.4a), with the antenna pointing away
from the boom.
2. Install a weight and chain assembly to the
eye nut. The weight and chain assembly can
either be supplied by LSI (as an option) or the
original assembly supplied with the crane. If
the original assembly is to be used, its total
weight must not be more than 13lb.
2.4d Chain Length Adjustment
1. Chain length adjustment No. 1 – minimum boom
angle
a. At minimum boom angle, with no
additional weight on the hook block and
one part of line only, lift the boom just
enough to have the hook block suspend
and clear the sensor chain and weight.
b. Hoist slowly until the buzzer sounds.
Note the hoisting distance remaining; this
distance must be great enough to allow
the operator and the lockout system, if
installed, to prevent a two-block event.
If necessary, add chain between the
sensor and weight to increase warning
distance. If still insufcient, contact your
service representative.
2. Chain length adjustment No. 2- maximum
boom angle
a. Raise the boom to the maximum angle.
b. Hoist slowly as described in Step 1.b.
Verify that the warning distance is equal
to or greater than that determined at the
minimum boom angle.
3. Chain length adjustment No. 3 – speed test:
Lower the boom until the weight height becomes
visually clear to the operator. Repeatedly create
two-block, progressively hoisting faster, to
ensure that the warning and lockout work
within acceptable amount of time and distance.
Increase the length of the chain if needed.
B) Hook block stops
rising, two-block
prevented with
safety margin
Boom
base
A) Anti-two-block
switch triggers
two-block alarm
Boom
base
Figure: Chain length test at minimum angle
B) Hook block stops
rising, two-block
prevented with
safety margin
Boom
base
A) Anti-two-block
switch triggers
two-block alarm
Boom
base
Figure: Chain length test at maximum angle
Increase
GS050
weight
Figure: Chain length adjustment
IMPORTANT!
To increase chain length, only use
lightweight chain.
!
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

INSTALLATION 15
2.5 Length Sensor Cable Reel
The GS101 includes the LS101 cable reel and
the GS011 angle/length sensor. The GS011 is
concealed under the cover of the LS101, though
the antenna is visible. Following cable reel
installation and boom length indication calibration,
boom angle indication will have to be veried and
possibly calibrated. Refer to Angle Calibration
Procedure No. 1: Mechanical Set-Up and Angle
Calibration Procedure No. 2: Correct with the
GS820, sections of this manual.
2.5a Maximum Boom Extension
Conrm the maximum extension of the LS101
cable reel is compatible with the maximum boom
length.
Step 1. Note the cable reel maximum extension: 100 feet
(30.5 metres) unless specied otherwise.
T = _____________________________
Step 2. Note the retracted boom length.
A = _____________________________
Step 3. Note the maximum extended boom length, not
including jib.
B = _____________________________
Step 4. Calculate maximum boom extension.
C = B – A = ______________________
Step 5. Compare cable reel maximum extension (T) to
maximum boom extension (C).
D = T – C = ______________________
Maximum cable reel extension must be greater
than maximum boom extension.
2.5b Mounting the Cable Reel
1. Determine placement. Find a clear mounting
position on the left side of the rst (main)
section of the boom. The mounting position
should be close to the base of the boom; at
least ten feet (three metres) from the tip of the
rst section and where the cable reel won’t
obstruct free boom movement at all boom
angles and slew positions. Furthermore, the
reel must be placed such that the cable has a
clear straight line to the end of the last section
at all boom lengths.
2. Mount the welding tabs. They must be placed
parallel to each other, with 16 1/8” inches
between the holes’ centres. Install the tabs
such that they create a level mounting position
in line with the boom at 0 degrees.
3. Attach the reel to the welding tabs with the
bolts provided.
4. Install the rst cable guide (PA111) about 10 feet
(3 metres) from the cable reel. Correct alignment
of the rst guide is critical to ensure orderly
winding of the cable on the reel. Install the other
guides at the end of each of the intermediate
sections and the anchor (PA113) at the end of
the last section. All guides must be aligned so as
to permit unobstructed movement of the cable.
5. Pull out at least 5 feet (1-1/2 metres) of cable,
but not more than half the excess extension
of measurement D. Feed through the cable
guides and attach to the cable anchor on the
tip of the last boom section. If additional cable
GS011 angle/length
sensor antenna
LS011 length sensor
cable reel
Figure: GS101 angle & length sensor
Boom
base
Boom
tip
Welding
pads holes
16 1/8 in. apart,
centre-to-centre
Welding
pad holes
2 1/4 in. apart,
centre-to-centre
Welding
pads
Welding
pad holes
tapped 3/8-16
Welding pads level and
in line with the boom at
0 degrees from horizontal
Figure: Cable reel mounting position
WARNING! Arc welding may damage LSI
sensors, causing immediate failure or greatly
reducing functional life. Arc welding on or near
LSI equipment will void warranty. Keep LSI
equipment well clear of any arc welding.
!
Note: When factory installed the GS011 angle/length
sensor transmitter is integrated to the LS101 cable
reel with the angle sensor zeroed. If the cable reel is
installed perfectly level on the boom at 0 degrees, the
angle sensor of the GS011 will also be zeroed. Minor
adjustments to the angle sensor (within plus or minus
two degrees) are possible after cable reel installation.
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

16 The GS820 System
length is required to reach the cable anchor
point remove winds from the reel without
putting additional tension on the cable reel
spring. There should be minimal tension on
the cable reel spring when the boom is fully
retracted.
6. Verify the boom length indicated on the GS820
LCD. Boom length indicated should equal the
actual total boom length. The actual boom
length is the distance from the boom base pin
to the head sheave centre as measured along
the boom centreline. Depending on the exact
placement of the cable reel and the cable
anchor the displayed length may differ from the
actual length.
2.5c Boom Length Calibration
Procedure No. 1: Mechanical
Set-Up
1. Fully retract the boom
2. Adjust the loose wire rope at the boom tip so
that the displayed boom length matches the
actual boom length.
3. Fully extend the boom.
4. Verify the boom length indicated at full boom
extension matches the actual fully extended
boom length. If not then follow Boom Length
Calibration Procedure No. 2: Correct with the
GS820.
2.5d Boom Length Calibration
Procedure No. 2: Correct with
the GS820
If the displayed boom length does not match the actual
length of the boom retracted or extended and if it is
not possible to easily correct by following 2.6c Boom
Length Calibration Procedure No. 1, then follow
this procedure. This procedure is completed in the
operators cab, it requires fully retracting, and then fully
extending the boom, as prompted by the on screen
instructions.
1. Go to menu 4) INSTALLATION and select 4B)
SENSOR CALIBRATION.
2. Enter the user password, press Enter and go
to menu 4B1) AUTOMATIC CALIBRATION WIZARD.
3. Use Up and Down to select the length sensor,
and then press Enter to conrm communication
with the sensor is possible.
4. Start the wizard.
5. Press Enter to conrm the units that will be
used during the calibration wizard.
Cable
anchor
Cable guide
Cable
reel
Boom length
Boom
base
pin
Figure: The actual boom length. Typical installation.
Figure: Typical operation page with boom length indication
g
Figure: The boom length calibration wizard, confirm minimum
boom length.
CAUTION! Visually monitor remaining length
on the cable reel as the boom is extended
for the first time following installation. This
generally requires a second person (in addition to
the operator).
C
!
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

INSTALLATION 17
6. Fully retract the boom, and use Up and Down
to adjust the length value displayed to equal
the actual fully retracted boom length, and
then press Enter to conrm.
7. Fully extend the boom, and use Up and Down
to adjust the length value displayed to equal
the actual fully extended boom length, and
then press Enter to conrm.
8. Note the new trim and scale values.
9. Press Enter to send the new calibration to the
length sensor.
10.Press Exit to return to the operation display.
2.6 Radius
2.6a Radius Verification and
Adjustment
1. Verify the boom and lufng jib* angles, and the
boom length**, are indicated correctly.
2. Verify the correct rated capacity chart is
selected***.
3. Test No. 1: measure the actual radius and
compare to the radius indicated. Repeat with
the boom at minimum angle, at 45 degrees,
and at maximum angle; repeat at minimum and
maximum boom length**. If radius indication is
not accurate then go to step 4.
4. Measure the basic radius parameters on the
crane.
5. Program the basic radius parameters in the
RADIUS SETTINGS menu.
6. Test No. 2: measure the actual radius and
compare to the radius indicated. Repeat with the
boom at minimum angle, at 45 degrees, and at
maximum boom angle; repeat at minimum and
maximum boom length**. If radius indication is
not accurate then go to the next step.
7. If the crane is rigged with the main boom only,
then go directly to step 11.
8. If the crane is rigged with a rooster, jib, or other
extension then the advanced radius parameters
must be measured on the crane and then
programmed in the RADIUS SETTINGS menu of the
display.
9. Test No. 3: measure the actual radius and
compare to the radius indicated. Repeat with the
boom at minimum angle, at 45 degrees, and at
maximum boom angle; repeat at minimum and
maximum boom length**. If radius indication is
not accurate then go to the next step.
* When the hoist is rigged off of a luffing jib only
** Telescopic boom cranes only
*** Systems with rated capacity charts programmed
in the GS820 only
Figure: The boom length calibration wizard, confirm maximum
boom length.
Figure: The boom length calibration wizard, Trim and Scale
values.
Note: If the difference between the displayed radius
and actual radius remains constant at all boom lengths
and angles, then correct by adjusting the slew offset.
For example: if the radius displayed is always 2.3 feet
longer than the actual radius, then subtract 2.3 from
the slew offset.
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

18 The GS820 System
10.Test for boom deection (telescopic crane only):
is the radius indicated equal to the actual
radius with the boom at 0 degrees and at 90
degrees but smaller than the actual radius with
the boom at 45 degrees? If yes then adjust the
boom deection value to compensate:
a. Raise the boom to 45 degrees with a
known load.
b. Compare the indicated radius with
the actual radius. Change the boom
deection value and again compare the
radius displayed with the actual radius.
Repeat until the radius displayed equals
the actual radius.
11.Test No. 4: measure the actual radius and
compare to the radius indicated. Repeat with the
boom at minimum angle, at 45 degrees, and at
maximum boom angle; repeat at minimum and
maximum boom length**. If radius indication is
not accurate then refer to Radius Settings.
2.6b Radius Settings
1. Go to menu 4) INSTALLATION and select 4C)
RADIUS AND HEIGHT SETTINGS.
2. Enter the user password and press Enter.
3. Use Up and Down to navigate between the
radius settings, press Enter to modify and use
Up and Down to adjust the settings.
4. Press Enter to save any changes and press
Exit to return to the operation display.
4C) RADIUS SETTINGS
* 1) Boom length
* 2) Slew offset
3) Boom foot height offset
4) Tip height tolerance
5) Boom top length
6) Boom top offset
7) Jib offset
8) Lattice extension offset
9) Jib mounting point perpendicular
10) Jib mounting point parallel
11) Reel includes manual
12) Manual boom section length
13) Fully retracted boom length
14) Fully extended boom length
15) Main hoist
15A) Jib length
15B) Lufng jib length
15C) Lattice extension length
* 15D) Sheave head length perpendicular
15E) Sheave head length parallel
*15F) Sheave radius
15G) Deduct
16) Auxiliary hoist
...16A) to 16G): same as 15A) to 15G)
17) Auxiliary hoist 2
...17A) to 17H): same as 15A) to 15G)
18) Auxiliary hoist 3
...18A) to 18H): same as 15A) to 15G)
19) Auxiliary hoist 4
...19A) to 19H): same as 15A) to 15G)
20) Auxiliary hoist 5
...20A) to 20H): same as 15A) to 15G)
** Telescopic boom cranes only
Figure: Radius settings menu
* Basic radius parameters
Fi
Rd
i
t
ti
Note: with the boom at 45° and the maximum load
on the hoist, the boom deflection value should equal
the difference between the actual and the displayed
radius. With the boom at 45° and half the maximum
load on the hoist, the boom deflection value should
equal twice the difference between the actual and the
displayed radius.
IMPORTANT! Radius settings 4C 12) to 4C
17) are specific to the hoist line.
!
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

INSTALLATION 19
2.6c Basic Radius Parameters for a
Lattice Crane
2.6d Basic Radius Parameters for a
Telescopic Boom Crane
Crane center
of rotation
Boom
base pin
Jib mounting
point
Jib offset
angle
Jib
length
Head
sheave
Sheave head
length parallel
Menu 4C) 12E) SHEAVE HEAD LENGTH
PERPENDICULAR
The distance from the head sheave
centre to the boom centerline.
(Your measurement)
Menu 4C) 1) BOOM LENGTH
The distance from the boom base
pin to the head sheave centre.
(Your measurement)
Menu 4C) 12G) SHEAVE RADIUS
(Your measurement)
Menu 4C) 2) SLEW OFFSET
The distance from the boom base pin to
the crane centre of rotation.
If the boom base pin is behind the centre
of rotation this value will be negative.
(Your measurement)
Boom
base pin
Menu 4C) 12E) SHEAVE HEAD LENGTH
PERPENDICULAR
The distance from the head sheave
centre to the boom centerline.
(Your measurement)
Menu 4C) 1) BOOM LENGTH
The distance from the boom base
pin to the head sheave centre.
(Your measurement)
Menu 4C) 12G) SHEAVE RADIUS
(Your measurement)
Menu 4C) 2) SLEW OFFSET
The distance from the boom base pin to
the crane centre of rotation.
If the boom base pin is behind the centre
of rotation this value will be negative.
(Your measurement)
Crane center
of rotation
Figure: Basic radius parameters for a lattice crane. Typical installation. Not to scale.
Figure: Basic radius parameters for a telescopic boom crane. Typical installation. Not to scale.
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126

20 The GS820 System
2.6e Advanced Radius and Height
Parameters
Crane center
of rotation
Boom
heel pin
Boom
angle sensor
Luffing jib
angle sensor
SLEW OFFSET
BOOM TOP LENGTH
BOOM TOP OFFSET
ANGLE
MAIN BOOM
TIP HEIGHT TOLERANCE
BOOM TOP LENGTH
& OFFSET ANGLE
FIXED JIB LENGTH
& OFFSET ANGLE
LUFFING JIB LENGTH
(CENTRE SHEAVE TO
CENTRE SHEAVE)
LATTICE EXTENSION
LENGTH & OFFSET ANGLE
JIB MOUNTING POINT
PARALLEL & PERPENDICULAR
BOOM LENGTH
includes boom top
LATTICE EXTENSION LENGTH
LATTICE EXTENSION OFFSET
ANGLE
Extensions, two possibilities:
1)MANUAL LENGTH: the offset is
always zero degrees.
2)LATTICE EXTENSION LENGTH: the
offset angle must be adjusted.
Typical sheave heads:
• SHEAVE HEAD LENGTH PERPENDICULAR = D1
• SHEAVE HEAD LENGTH PARALLEL = 0 (typical)
Special top sheaves
(example: rooster):
• SHEAVE HEAD LENGTH
PERPENDICULAR = D2
• SHEAVE HEAD LENGTH
PARALLEL = D3 D2 D1
D3
BOOM FOOT
HEIGHT OFFSET
Figure: Advanced radius and height parameters. Typical installation. Not to scale.
SkyAzúl, Equipment Solutions www.skyazul.com 301-371-6126