Salter Brecknell S122 User manual

76104-180 Issue 0 *76104-180* 21.07.2004
ENGLISH
S122
Light Industrial Scale
User / Service Instructions

IMPORTANT
Before using the scale for the first time remove foam
packing from under the shroud.
1. Lift off weigh plate
2. Remove 4 x foam packaging block
s
3. Replace shroud

©Salter Brecknell 2005. All rights reserved.
The information contained herein is the property of Salter Brecknell Limited and is
supplied without liability for errors or omissions. No part may be reproduced or used
except as authorized by contract or other written permission. The copyright and the
foregoing restriction on reproduction and use extend to all media in which the
information may be embodied.

S122 User / Service Instructions 4
Contents
page no.
1Warnings
1.1 Electrical installation 7
1.2 Risk of electric shock 7
1.3 Additional service precautions 7
1.4 Safe handling 8
1.5 ESD handling precautions 8
2 Introduction
2.1 Features 9
2.2 Keys 10
2.3Error messages 12
3 Using the scale
3.1 Zeroing the scale 15
3.2 Data entry keys 15
3.3 Selecting weighing or counting 16
3.4 Using the backlight (option) 16
3.5 Switching between kgs and lbs 16
3.6 Sampling 17
3.7 Counting 18
3.8 Totalizing 19
3.9 Recalling totals 19
3.10 Canceling totals 20
3.11 Checkweighing 21
3.11.1 Setting check-weighing limits
3.11.2 To set the lower limit
3.11.3 To set the higher limit
3.11.4 To set the alarm

5S122 User / Service Instructions
Contents
3.11.5 Limit indicators
3.12 Using tares 25
4 Installation/Maintenance
4.1 Connecting the column 28
4.2 Connecting the indicator 30
4.3 Opening the covers 31
4.4 RS232 PIN assignments 32
4.6 Replacing a load cell 33
5 Configuration Mode
5.1 Entering configuration mode 34
5.1.1 Service mode keys 35
5.2 Configuration menu 36
5.2.1 F6 - exiting configuration mode 37
5.3 F0 - weight calibration 38
5.4 F1 - specification settings 40
5.4.1 Keyboard check 40
5.5 F2 - noise filter setting 44
5.6 F3 - zero display setting 45
5.7 F4 - checkweighing function 46
5.8 F5 - print option 48
5.8.1 Printer outputs
5.8.2 RS232 interface specification
5.8.3 Data format
5.9 F6 - exiting configuration mode 55
5.10 F7 - displaying the internal count 55
5.11 F8 - setting the hold function 56
5.12 F9 - software lock 58

S122 User / Service Instructions 6
Contents
Wiring Diagrams
6.1 Power supply connections 58
6.2 Main board connections 59
6.3 Load cell connections 60
7Parts Lists
7.1 Illustrated part lists 61
7.2 Additional parts 62

1.1 Electrical installation 1 Warnings
7S122 User / Service Instructions
1 Warnings
1.1 Electrical installation
The power cord must be connected to a supply outlet with a
protective earth ground. The electrical supply at the socket
outlet must provide over current protection of an appropriate
rating.
Pluggable equipment must be installed near an easily
accessible socket outlet. Permanently connected equipment
must have a readily accessible disconnect device
incorporated in the fixed wiring.
For your protection all (110V or 230V) equipment used
out of doors or in wet or damp conditions should be supplied
from a correctly fused source and protected by an approved
RCD to BS7071 or BS7288 or BS4293. IF IN DOUBT SEEK
ADVICE FROM A QUALIFIED ELECTRICIAN.
1.2 Risk of electric shock
This equipment ispowered by ACvoltage which presents
an electric shock hazard.
Always completely disconnect the power supply:
●Before removing the scale covers
●Before performing any routine maintenance
●Before cleaning the scale
1.3 Additional service precautions
●When the covers are removed, do not apply power to the
unit unless specifically instructed to do in this handbook.
●When working on live equipment, exercise great care,
use insulated tools and test equipment, and do not work
alone.

8S122 User / Service Instructions
1 Warnings 1.4 Safe handling
●When testing or fault finding, exercise extreme care.
Ensure that any test equipment used is in good condition
and capable of with standing the existing voltages.
●All tools used must have insulated handgrips. Test probes
and jumper leads must be in good condition with
adequate insulation. Test probes with claw ends and
jumper leads must not have insecure parts that may fail
during use.
1.4 Safe handling
When lifting, moving or supporting the scale, take its
weight into consideration.
1.5 ESD handling precautions
When handling printed circuit boards and electronic
components, observe the following ESD handling
precautions:
●Wear an grouned antistatic wrist strap.
●Ensure that all electronic components/boards are stowed
appropriately, by use of conductive/antistatic work
surfaces and packaging.

1 Features 2 Introduction
S122 User / Service Instructions 9
2 Introduction
2.1 Features
1. High performance A/D converter.
●0.3µv/ sensitivity
●Sample speed 16 times / second
●Maximum resolution : 15000
●Non-linearity 0.01 % FS
●-1 mv ~ +5 mv
●Used range -1 mv ~ +14 mv
●Load cell excitation power 5VDC ±5% 100mA.
2. Adjustable noise filter setting for the range of stability
from 01 ~ 15.
3. Depending on the calibration division:
●Standard division (under 10000)
Capacity and weight must be calibrated.
●High precision division (over 10000 to 150000
divisions)
Linearity, capacity and weight must be calibrated.
4. Option with RS232 output .
5. Three options for the HOLD function.
6. AC / DC power supply.
7. LCD display.
8. Auto-power cut off to ensure performance stability.
Power is cut off automatically if the power is below the
low battery warning.
9. Built-in backlight.

10S122 User / Service Instructions
2 Introduction 2.2 Keys
2.2 Keys
Zero key. Remove any weight on the platform before
pressing the key.
Data entry key. Increments the value ofthe selected
digit.
Displays the backlight option.
Data entry key. Go to the next digit.
Resets all values on the current display to zero.
Selects units of measure.
Switches between kgs and lbs.
Selects counting mode.
Sample key. Displays the number of items in the
sample.
Totalize key. Displays the count number and total
weight each time you add a weight to the platform.
Remove the weight from the platform when finished.
Recall totals. Displays the count number and then
the total for a few seconds. To cancel totals press
whilethe count number or total is
displayed.
ZERO
ENTER
CLEAR ENTRY
COUNT
SAMPLE
RECALL
CLEAR ENTRY

2.2 Keys 2 Introduction
S122 User / Service Instructions 11
Sets checkweighing limits and beep option when in
counting mode.
Tares off the displayed weight of a container.
Enables you to enter a tare value when no weight is
on the platform. To view a tare press
followed by the tare key. To cancel a tare remove the
container and press the tare key. To cancel a preset
tare press whilethe tare is displayed.
TARGET
TARE
RECALL
CLEAR ENTRY

2.3Error messages 2 Introduction
S122 User / Service Instructions 12
2.3Error messages
E1 When the scale is switched on, the weight on the
platform is above or greater than the automatic zero
range (greater than 10% of the capacity of the scale).
Make sure that there is no weight on the platform. If the
error persists, re-calibrate the machine.
E2 When the scale is switched on, the weight on the
platform is below or lower than the automatic zero
range (greater than 10% of the capacity of the scale).
Correct service set up procedure has not been
followed. Ensure calibration weight is applied and
removed exactly in accordance with instructions.
E3 Not used.
E4 The weight on the platform is unsteady.
E5 There is a problem with the load cell. Check the wiring
(see page 60). If the error persists, replace the load cell
(see page 33).
E6 The internal zero value is greater than 360,000. The
error may occur in calibration mode.
E7 The internal zero value is less than 240,000. The error
may occur in calibration mode.
E8 This message will only appear for legal for trade scales.
If you are configuring the capacity of the scale, the
number of divisions cannot exceed 10,000.
The weight is greater than the capacity of the scale.
Temporary error. Remove any weight from the platform,
switch off and then on again. If this error persists,
contact your authorized service agent.
--OL-
-
-----
-

Connecting to the AC power supply.
Make sure that there is no weight on the platform before switching
on.
Plug the power supply lead into the scale.
Make sure that the battery switch is set to the internal battery.
When the scale is connected to the AC power supply you will
see a red, yellow or green charging lamp depending on the
condition of the internal battery.
Using batteries
You can either use the internal rechargeable battery or use 6 size
’D’ cell batteries (alkaline batteries are recommended).
Use the battery switch to select either the internal battery or the ’D’
cells.

When this symbol flashes, you should either replace the ‘D’ cell
batteries or recharge the internal battery.
Do not leave discharged batteries in the scale, asthey may leak
and cause serious damage. Do not store the machine with 'D' cell
batteries in the battery compartment.
Recharging the internal battery
While the machine is connected to the AC power supply and
internal battery is being recharged, the power supply light will turn
red, yellow, and then green.
To maintain the rechargeable battery in good condition, it should be
kept fully charged wherever possible. If the battery is to be stored,
the rechargeable battery should be fully charged before storage
and then recharged at 3 month intervals.
Disposing of the scale.
The scale contains a lead-acid battery. When disposing of the
machine, you should take it to an appropriate recycling facility.

3.1 Zeroing the scale 3 Using the scale
S122 User / Service Instructions 15
3 Using the scale
Depending on the option of the machine, some functions
may not be available.
If the ▼icon above the STABLE legend flashes while you are
using the scale, it means that the weight on the platform is
unsteady.
3.1 Zeroing the scale
Remove any weight from the platform.
3.2 Data entry keys
Whenever you need to enter values when setting totalizing,
check weighing or pre-set tares, use the following keys:
Increments the value of the selected digit.
Go to the next digit.
Restore all settings on the current display to zero.
0000
.
ZERO
lb
ENTER
CLEAR ENTRY

16S122 User / Service Instructions
3 Using the scale 3.3 Selecting weighing or counting
3.3 Selecting weighing or counting
If no sample size has been set you will be prompted to sample
some items.
3.4 Using the backlight (option)
Each press of the backlight key shows:
If set to automatic, the backlight comes on automatically when
the indicator is being used. A backlight may not be available
on some scale.
3.5 Switching between lbs and kgs
Weighing mode Counting mode
COUNT
bL. On
bL. OFF
bL.AUtO
Always on
Always off
Automatic backlight

3.6 Sampling 3 Using the scale
S122 User / Service Instructions 17
3.6 Sampling
When selecting the number of items you wish to use as a
sample remember that the larger the sample size, the more
accurate the counting will be.
If you see ▼above the piece weight icon it means that the
unit weight of each item is too small and this may lead to an
inaccurate count.
C 10
C 20
C 50
Display sample number
C 100
Place sample items on the platform
SAMPLE
COUNT
C 10
C 20
C 50
Unit weight too small
C 100
SAMPLE
COUNT
PIECE
WEIGHT

18S122 User / Service Instructions
3 Using the scale 3.7 Counting
If you see ▼above the add to sample icon it means that the
weight of the sample is too small. Unless you increase the
weight of the sample the count may be inaccurate count. You
should select a greater number of samples and add these to
the scale.
3.7 Counting
If you select counting mode and no sample size has been set
you will be prompted to sample some items.
C 10
C 20
C 50
Weight of sample too small
C 100
SAMPLE
COUNT
ADD TO
SAMPLE
Weighing mode
Counting mode
Select either weighing or counting mode: COUNT

3.8 Totalizing 3 Using the scale
S122 User / Service Instructions 19
3.8 Totalizing
Remove the weight from the platform when finished.
3.9 Recalling totals
The count number and then the total will each be displayed for
a few seconds before returning to the current display.
For each weight that you want to add:
The count number and then the total weight will each be displayed
for a few seconds.
ADD
lb
lb
-0004- 2043
RECALL
lb
lb

20S122 User / Service Instructions
3 Using the scale 3.10 Canceling totals
3.10 Canceling totals
Press the clear key whilethe count number or total is displayed.
CLEAR ENTRY
RECALL