Technical training seminars are available through Rice Lake Weighing Systems.
Course descriptions and dates can be viewed at www.ricelake.com/training
or obtained by calling 715-234-9171 and asking for the training department.
About This Manual ................................................................................................................................... 1
This manual is intended for use by trained and qualified personnel for installing and servicing the OB-350 digital
weight indicators. This manual applies to indicators using version 4D-02-05 of the OB-350 software.
Manuals can be viewed and downloaded from the Rice Lake Weighing Systems website at
www.ricelake.com/manuals.
1.0Introduction
The OB-350 Onboard indicator is for industrial road going vehicles. It has been designed to be simple to operate,
giving the driver precise weight information where and when it is needed. It incorporates a clear, easy-to-read
OLED (organic light emitting diode) display. This is the clearest display currently available.
The OB
1.1Safety
Safety Symbol Definitions:
-350 digital weighing indicator features:
• Two input channel for separate groups of
load cells
• CANbus (control area network) input & output
• RS-232 output
• ABS injection molded housing
• Organic light emitting diode (OLED) high quality
• Four-button keypad
64 x 264 pixel (picture element) display
Indicates an imminently hazardous situation that, if not avoided, will result in death or serious injury.
Indicates a potentially hazardous situation that, if not avoided
includes hazards that are exposed when guards are removed.
Indicates a potentially hazardous situation
Indicates information about procedures that, if not obser
corruption to and loss of data.
that, if not avoided may result in minor or moderate injury.
General Safety
Do not operate or work on this equipment unless you have read and understand the instructions and
warnings in this manual. Failure to follow the instructions or heed the warnings could result in injury or
death. Contact any Rice Lake Weighing Systems dealer for replacement manuals. Proper care is your
responsibility.
Failure to heed may result in serious injury of death.
Some procedures described in this manual require wo
qualified service personnel only.
Before opening the unit, ensure the power cord
DO NOT allow minors (children) or inexper
DO NOT operate without all shields and guards in place.
DO NOT use for purposes other then weight taking.
DO NOT place fingers into slots or possible pinch points.
DO NOT use any load bearing component that is
DO NOT use this product if any of the
DO NOT exceed the rated load limit of the unit.
DO NOT make alterations or modifications to the unit.
DO NOT remove or obscure warning labels.
DO NOT use near water.
Keep hands, feet and loose clothing away from moving parts.
components are cracked.
is disconnected from the outlet.
ienced persons to operate this unit.
rk inside the indicator. These procedures are to be performed by
worn beyond 5% of the original dimension.
could result in serious injury or death, and
ved, could result in damage to equipment or
Introduction1
2.0Operation
print
13240
lb
zeromenu
A
B
C
D
E
F
net
The OB-350 indicator has a power button, but it can also be p ermanently po wered thro ug h th e ignition 9-30 VDC.
Turn ignition on or press the power button and the software version
welcome screen.
The vehicle’s gross weight will then di splay. Take weight readings when
An empty vehicle may drift from a true zero by a few pounds, press
vehicle is empty. For roll off and dump truck installations, raise body three to four degrees using the inclinometer
screen before zeroing or weighing.
2.1Front Panel
The four symbol keys: square, down arrow, up arrow and circle on the keypad are assigned in both operator and
setup modes, and are used to navigate through the menus as indicated by the text or symbol in the OLED display.
Weight readings are in lb.
Operator Mode
and serial number appear in the 10 second
the vehicle is static and on level ground.
ZERO to return the display to 0 lb when the
Figure 2-1. Operator Mode
KeyDescription
APrint key - prints net, gross, time & dat
Acts as an accumulation button
BWhen the vehicle is completely empty and in th
adjust the display to read ‘00000’, up to 1100 lb.
CMENU key - scrolls through’ NET, GROSS, MENU & any options activated.
DDisplayed weight.
EShows active function or weighing mode.
FPower button.
e in weighing screens when activated.
in load/deliver mode.
e weighing position, the front panel ZERO or TARE can be used to
2OB-350 Indicator Operator’s Manual
Operator Configuration and Technician Setup Menu
M
E
N
U
(OK)
Display
Diagnostics
Alarms
Options
Configuration
Calibration
System
ABCD
E
Note
Figure 2-2. Setup Mode
KeyDescription
AOK key - acts as enter or accept key.
BDown arrow key - scr
CUp arrow key - scrolls up menu.
DBack-up key - goes back a step (in some modes, acts as enter or accept key).
ESelectable MENU options.
Display Changes OLED contrast to high, medium or low. Also shows
Alarms Two alarm set points - PIN code required to mute Alarm - press any key.
Options Activates options and changes settings.
Configuration Selects 1 channel, or 2 channel, air, oil or fifth wheel, split axle systems, etc.
Calibration Weighing system calibration settings, Tare, Zero & Span.
System Accesses password set and resets.
For PUK (PIN unlock code) contact RLWS service to for instructions through your PIN
retrieval.
olls down menu.
software version and serial number.
Operation3
3.0Installation
Panel mount
Roof/under dash mount
Dash mount
Optional Radio DIN mount
145
18
62.5
100.5
59
90 centres
dia holes 2 places
122 centres
4 mm self taper
3.5 deep - 4 places
90
40 ctrs
44
145
Locate the most convenient place for mounting the indicator. When atta ching the u-bracket, ensure there is
adequate headroom. The cables will be wired into the back of the indicator, so make sure to allocate enough space
for them during installation.
3.1Mount Options
Figure 3-1. Mounting Options
3.2Dimensions
Figure 3-2. Dimensions
4OB-350 Operators Manual
3.3Electrical Wiring and Data Connections
1
3
2
4
5
6
12B1D4FB
T
The OB-350 is fitted with one Power and one Input Channel connector as standard. CANbus, Channel 2 and RS-232 are optional.
Full connector options is shown for illustration.
Figure 3-3. Rear Panel Identification and Bulkhead Connectors
PinDescription
1Input Channel 1, Max +/-39.0625 milli-Volts (also known as analog)
2Input Channel 2, Max +/-39.0625 milli-Volts (also known as analog)
3Power Input & Alarm Output
4CANbus digital input & output
5
6
RS-232 output for printers and data captur
receive)
Alpha-numeric unique indicator serial number, also appears on power-on
SIGNAL channel 1 & 2, socket is FEMALE. – CON 2 & 3 on PCB
Pin 1
Pin 2
Pin 3
Pin 4
BROWN+ Excitation 5 Volts DC
WHITE+ Signal milliVolts from the junction box & loadcells
BLUE- Excitation 0 Volts
BLACK- Signal milliVolts from the junction box & loadcells
POWER & ALARM, socket is MALE – CON 1 on PCB
Pin 1
Pin 2
Pin 3
Pin 4
BROWNVehicle voltageSupply 12V (LCV) or 24V (MCV & HGV)
WHITEOutput 112V or 24V
BLUEGroundGround 0 Volts (common)
BLACKOutput 212V or 24V
CANbus input and output, plug is MALE – CON 5 on PCB
Pin 1
Pin 2
Pin 3
Pin 4
BROWN+24V+24 Volts DC Power Input
WHITEGNDCAN bus LOW Output
BLUECANH0 Volts Ground
BLACKCANLCAN bus HIGH Output
Installation5
3.4Cables and Connectors
FEMALE moulded plug
POWER & ALARM
supplied as standard
MALE moulded plug
SIGNAL & CANbus
supplied as standard
MALE rewirable plug
SIGNAL
part no CBL0038
FEMALE rewirable plug
POWER + ALARM
part no CBL0039
Junction boxes
have FEMALE
signal sockets &
MALE indicator
cable socket
LoadRunner connectors have keyways and are gendered and thumb tightened for ease of use. System kits are
supplied with fully molded connectors. Rewirable plugs are available for replacements or repairs. The RS-232
connector is industry standard. This manual also shows interchangeable rewirable plugs.
Figure 3-4. Connectors
RLWS cables and connectors are specially designed to provide maximum signal strength and reliability.
Substitution of cabling other than RL WS supplied cabling may cause inconsistent and erratic readings. Care should
be taken when routing cables to provide protection from sharp edges, drive-line rotation, exha ust pipe, or any o ther
potential damage. Secure in place with cable ties to a snug fit. Locate the junction box mid-chassis at a suitable
accessible position and fix firmly with screws supplied.
6OB-350 Operators Manual
4.0Operating Modes
4.1Printing & Print Tickets
Ensure the RS-232 option is set to PRINTER and a printer is connected with the cable supplied. The printer is
powered through the RS-232 connector and uses a default baud rate of 9600. There are three print tickets available:
4.1.1 Truck Weights
Press print.
Net, gross, time and date is printed
4.1.2 Load Mode
Press print in load mode.
Time & date together with individual and total bin collections from a site and truck information is printed.
This mode can also be used with the additional keyboard to enter an account number for the site.
Figure 4-1. Wiring Schematic
Operating Modes 7
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