SEKO FORKLIFT SCALE
Accurate and Affordable Industrial Truck Scales
RINSTRUM Model R320/323 - K356 - v4.16
DIGITAL SCALE INDICATOR
Precision Static Weighing Lift Truck Scale.
Revised 25 June, 2017
System Technical Specifications
Specification
General Features
User-friendly system available with built-in
troubleshooting diagnostics and our 24-7
technical support line. 307-321-4505
System is designed to work dependably and
accurately in the harshest environments,
Accumulation feature allows operators to either
count up for total or display single load weight.
Accurate and requires less than an hour to install
and calibrate
RS232 Printer accessory available providing
weight, date, time and total weight.
Two Setpoints with Isolated 300mA 50V Outputs
Internal Clock/Calendar
Options and Accessories:
Receipt Printer
Remote Switch for Accumulator Function
Technical Features
Input Power - Voltage: 9 -
Input Power - Current/Amps: Maximum: 500mA Input
Power - Current/Amps: Nominal: 150mA
Excitation Voltage: 5Vdc
Operating Temperature: 14F to 104F (10C to 40C)
Control Panel Key Functions:
Power/Units, ZERO, Tare, Select, Print, Function
Serial Port: Full Duplex RS-232 format
DisplayTechnology: 6 digit LCD 3/4" height
Housing Material: Grey ABS
Weight: 1 lb. 6oz.
Shipping Weight: 2 lb. 4oz.
18Vdc
12Vdc Battery Line Conditioner
Voltage-Converter for 24Volt to 48Volt systems)
The SEKO Forklift Scale Modular Load Cell weighing system determines the load weight by
sensing the weight on the forks.
This signal is transmitted to the In-Cab Indicator, which displays the weight on the forks.
1
Installation
Side View Front View
Rinstrum R320 Scale Indicator Face View
Rinstrum R320 Scale Indicator Rear View
Side View with Boot
Rear View
2
Electrical Installation
Rinstrum R320 Scale Indicator Power: 9Vdc to 18Vdc from Truck Electrical.
Power may be attached via external plug or hardwired to internal Euro
connector.
Connect power via Key Switch or directly to Battery Power.
Installation
Power
Plug
Recommended in-line fuse for truck electrical protection: 2.0A Minimum.
For 24, 36, 48Vdc truck electrical systems, contact Sales for Power
Converter recommendations.
Polarity
Typical Franklin Model
Power Converter
Dimensions
3
Power / SetUp
Standard Rinstrum Rear Panel Wiring Options
9
9
12
12
DTR Connection Optional
Normally Not Connected
Alt: Brown
Alt: Grey
Yellow or Clear
Alt: Brown
Alt: Grey
4
Jumper
From Battery
Power Supply Input
9
From Alarm Accessory
12
Install jumper (provided in Alarm
RED
Cable
Connect
Check to assure spring-clips grip wire, not insulation
R-320 Indicator Rear Panel Wiring with
Remote Alarm Cable and Jumper
PWR (+)
wire
Alarm
PWR (-)
OUT 1
GND
to
OUT
Cable
COM
OUT2
OUT1
DTR
TXD
RXD
GND
1
BLACK
Kit)
Wire
Green
White
Red
Black
from PWR
to GND
Sig (+)
Sig (-)
Exc (+)
Exc (-)
(+)
COM Connect
to
Wire End
Trim
3/8" - 10mm
Alt: Brown
Alt: Grey
Alarm
Yellow or Clear
From
4-Wire
Transducer
Operator
Briefing
Weighing Methods
Operator
SEKO Modular Weighing System with
Prepared by Technical Support
Simple weighing procedure which produces desired weight consistency and accuracy:
Simply "Lift and Weigh":
Load
the forks
Allow the scale to calculate and display the weight of the load.
Weighing liquid, dangling and hanging loads:
Liquid, dangling and hanging loads can be difficult to weigh because the shifting load produces unstable
inertial and gravitational stresses on the lifting mechanics.
Try to operate the truck to avoid sloshing, swinging or bouncing of the load when lifting to weigh.
The Rinstrum Indicator can be set up for "Live Weight" weighing of unstable loads, such as live animals.
See Section 8.4.7 of the Reference Manual for setup and weighing details.
and
lift
Rinstrum Indicator
25 May, 2017
*******************
5
Operator
Operator Briefing
What is "Scale Weighing Accuracy"?
Prepared by Technical Support 25 May, 2017
What does the term "Accurate" mean?
"Accurate" means that the scale displays the actual weight of the load, within the specified +/tolerance of error, plus one display graduation, whichever is larger.
What does the terms "Consistent" and "Reliable" mean?
"Consistent" means that the weights displayed are close in value and not "scattered". We consider
consistent and reliable weights to be those which vary less than +/- one scale display increment.
"Reliable"relates to your level of confidence that the weighing system is producing a consistent and
accurate weight display each time you lift and weigh.
What does the terms "Scale Error" mean?
Scale Error or Accuracy is defined as a percentage of full scale capacity.
SEKO Forklift Scale systems utilize Rinstrum's NTEP certified Scale Indicator producing display errors
of less than +/- 0.03% and NTEP certified S-beam type load cells producing signals with +/- 0.03% error.
The SEKO weigh module low-friction mechanical design allows better than +/- 0.1% displayed weight
error in practice.
Mast tilt can cause weighing errors due to the altered gravitational vector producing strain on the scale
load cells. In normal truck operation, this effect is small and generally not noticed.
However, when +/- 0.1% accuracy is essential, we recommend that the Tilt Compensation scale option be
considered. This option will automatically sense and correct the weight display for the effects of load tilt
up to +/- 10 degrees of truck/mast and carriage tilt.
A Note to you, the Operator - Your operation experience is the basis for
Your feedback, comments and recommendations are very important and can aid other operators as the
information is passed along, such as we have done in these notes. I hope these comments have been useful for
your work. Please feel free to call 307-321-4505 for additional assistance and to share experiences of success
and not so successful. Your input will help improve these notes.
all that is written in these notes.
******************************
6
Passcodes and Operator Lock-Out
The instrument has two levels of passcodes to provide restrict Setup via the keypad.
( Normally NOT USED )
Full Setup Passcode (For calibration and Technician Access)
Setting a passcode for Full Setup restricts any access to Full Setup.
Full Setup passcode can also be used to access Safe Setup.
Safe Setup Passcode
Setting a Passcode for Safe Setup restricts access to Safe Setup functions.
Setup Operator Lock-Out
If an attempt is made to enter Full or Safe Setup using an incorrect Passcode, the instrument will respond
with the message ENTRY DENIED and then the user will be returned to normal operating mode.
A Passcode counter has been set so that only three failed attempts can be made to access Full/Safe
Setup. On the fourth attempt the user will be 'locked out' of Full/Safe setup.
Should this occur the ENTER PASS prompt will not display, but instead the ENTRY DENIED
message displays and returns the user to the normal operating mode. To rectify this issue the instrument
must be turned off. When the instrument is turned back on the Passcode counter is reset to zero
(allowing the user to enter the correct Passcode).
SAFE.PC (Safe Passcode for Operator access.) allows partial access to Digital Setup (ie. only
non-calibration/trade critical settings can be changed).
(May allow limited Operator Access)
Operator
For the Safe Passcode (SAFE.PC) to have any effect, the FULL.PC (Full Passcode) must also be set.
The default Passcode setting is 000000 that allows free access.
Any other number will restrict access.
Range: 000000 to 999999
Default: 000000
FULL.PC (Full Passcode) can be set to restrict access to Full Digital Setup.
This Passcode is used to prevent unauthorized or accidental tampering in the instrument setup.
The default Passcode setting is 000000 allows free access.
Any other number will enable the Passcode functions and restrict access.
Range: 000000 to 999999
Default: 000000
It is important to note that when restricting Full access to Setup the Passcode must not be
forgotten. It is only possible to circumvent the Passcode loss at the factory.
Care must be taken when setting the Full Digital Setup Passcode to ensure that the instrument does not
become permanently locked.
7
Power / SetUp
1. POWER SOURCE
POWER CHECK and Troubleshooting
Check to be
Power
6Vdc using fresh "AA" batteries if utilizing internal battery pack.
2. POWER-UP
Press the small UNITS (Power) button to turn on Indicator.
Indicator should show the Firmware version (A301 v4.16), then count down from
The
9 to 0 and then display READY.
PRIMARY POWER PROBLEMS:
If the system does not turn ON or not
1. If no characters are displayed, if no
connections.
Truck power should be in
If a Voltage Converter is installed, Primary Power to the Indicator should be the labeled
Output Voltage +/- 20%
Check for correct Voltage polarity at the Indicator Connection.
sure the system has primary DC power applied.
should be between 8Vdc and 18Vdc if powered from truck electrical or greater than
stay ON, or if the system turns OFF unexpectedly:
back light is seen, check the Primary Power wiring and
the range of 11 to
13.8Vdc.
Note: Use a Voltmeter, if possible, to verify that the proper Voltage and polarity is present
at all test points.
2. If the wiring to the scale indicator is
Note: The standard LTWS-1 hydraulic weighing systems
Amperes (200 milli-Amp).
The purpose of a in-line fuse is to protect the truck electrical from a catastrophic short in
the weighing system electronics and electrical wiring.
This fuse rating should be in the range of 1.0 Amperes to 10 Amperes.
3. When measuring
than about 0.1 Vbetween when the indicator is turned ON and turned OFF.
Truck
common or negative connection
caused
and the primary power to the indicator.
electrical systems, especially
by
Primary
corrosion or loose fitting of the
Truck Voltage, the indicated Truck Voltage should
to the battery.
equipped with
older trucks, commonly
It is
elements of the chassis between the battery terminal
a fuse, check the fuse.
normally consume less
utilize the
not
unusual to experience high resistance
not vary by more
truck frame as
than 0.200
the
8
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