Salter Brecknell 7680 User Manual
Model 7600
Family
Postal Weight Classifiers
Model 7620
Model 7680
User’s Manual
CAUTION
Risk of electrical shock. Do not remove cover. No user serviceable
parts inside. Refer servicing to qualified service personnel.
Weigh-Tronix reserves the right to change
specifications at any time.
November 29, 2006 7600_U.P65 PN 7424-15384H e2 Printed in USA
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Model 7600 Family PWC User’s Manual
Table of Contents
Description .......................................................... 4
Specifications...................................................... 4
Initial Setup ......................................................... 9
Operation .......................................................... 10
7600 Menu Structure......................................... 14
7600 Menu Structure - Glossary ....................... 15
Diagnostics Mode.............................................. 18
Configuration Mode........................................... 21
Calibration Mode ............................................... 23
Re-Calibration Mode ......................................... 26
Gravity Mode..................................................... 28
Review Scale Settings....................................... 30
Communications ............................................... 31
Error Codes....................................................... 33
Troubleshooting ................................................ 34
Spare Parts Listing............................................ 37
Model 7600 Family PWC User’s Manual
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Description
Specifications
The NCI 7600 models are digital electronic letter
and parcel bench scales specifically designed for
mail manifest and shipping applications. They are
fast, accurate and reliable. All models use the
Quartzell® transducers for true digital signal
response for increased throughput capabilities
for weighing letters, flats and parcels using one
scale.
Capacity/
Resolution
Default for 100 lb
scale
Now an approved
Weights & Measures
resolution
7620-32 70 lb/30 kg
0-10 lb x 0.05 oz 10-70 lb x 0.2 oz
0-10 lb x 0.002 lb 10-70 lb x 0.02 lb
0-5 kg x 0.001 kg 5-30 kg x 0.005 kg
n1-5000 n2-6000
7620-50 100 lb/50 kg (100L Mode low res)
0-10 lb x 0.1 oz 10-100 lb x 0.5 oz
0-10 lb x 0.01 lb 10-100 lb x 0.05 lb
0-5 kg x .005 kg 5-50 kg x 0.02 kg
n1-1600 n2-5000
7620-50 100 lb/50 kg (100H Mode high res)
0-10 lb x 0.05 oz 10-100 lb x 0.5 oz
0-10 lb x 0.005 lb 10-100 lb x 0.02 lb
0-5 kg x .002 kg 5-50 kg x 0.01 kg
n1-3200 n2-5000
7620-75 150 lb/75 kg
0-10 lb x 0.1 oz 10-150 lb x 0.5 oz
0-10 lb x 0.005 lb 10-150 lb x 0.02 lb
0-5 kg x 0.005 kg 5-75 kg x 0.01 kg
n1-2000 n2-7500
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Model 7600 Family PWC User’s Manual
7680-75 150 lb/75 kg
0-10 lb x 0.1 oz 10-150 lb x 0.5 oz
0-10 lb x 0.005 lb 10-150 lb x 0.02 lb
0-5 kg x 0.005 kg 5-75 kg x 0.01 kg
n1-2000 n2-7500
The 7600 family of bench scales can be used for
general weighing applications when configured
as a scale, or for postal and shipping applications when configured as a weight classifier.
Agency
Certificates of
Conformance
Dimensions
Power Supply
Frequency
Model 7620 is approved as legal for trade:
United States - NTEP COC #95-071
Canada - Ministry of Industry #AM 5074
Europe - EEC (OIML) #UK 2476
For use as a Class III device from +5º to 40ºC
Model 7620:
14" L x 12.5" W x 4.2" H
356 mm L x 318 mm W x 107 mm H
Model 7680:
18" L x 18" W x 4.6" H
457 mm L x 457 mm W x 117 mm H
UL/CSA approved inline power supply with 6'
long standard wire line cord with ground
Input: 120 VAC + 10% - 15%
Output: 15 VDC @ .3 Amps
60 (±3) Hz Standard
Model 7600 Family PWC User’s Manual
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Power Requirements
0.1 amp maximum
Operating Temperature
Construction
Overload Protection
Display
42º F - 104º F
+5º C to + 40º C
10% to 95% RH (non-condensing)
Model 7620:
Die cast aluminum base and load bridge.
Plastic ABS or stainless steel weigh platter.
Aluminum quartz digital load cell
Model 7680:
Painted mild steel base with stainless steel
weigh platter. Aluminum quartz digital load cell
Model 7620:
Adjustable center stop
Fixed corner stops
Model 7680:
Adjustable center stop
Adjustable corner stops
400% static loading
200% dynamic loading
Internally mounted 1/2" high seven-digit LCD
Key panel with ZERO and UNITS function keys
Optional remote display with 7ft cable
Scale Leveling
Zero Window
6
Level bubble under weigh platter
Adjustable feet in each corner
Automatic zero setting is ±10% of maximum
capacity—active at power up. Manual zero
setting range is ± 2% of maximum capacity—
active using the ZERO key.
Model 7600 Family PWC User’s Manual
Under Capacity Limits
Under capacity indication will be given with
dashes appearing on the bottom line of the
display whenever the display is more than 10
division below the initial zero value.
Over Capacity Limits
Sealing
Internal Resolution
Dynamic Response
Communications
Over capacity indication will be given with dashes
appearing in the upper line of the display whenever the weighed item exceeds 9 divisions over
the rated capacity of the unit. The scale will use
the initial zero value for reference for over
capacity determination.
Access to the calibration switch can be secured
with a lead wire or pressure sensitive security
seal. The remote and primary indicators have no
metrological features that require the use of a
security seal.
1 part in 2,000,000
The time interval of weight applied to scale until a
stable weight:
Transmitted Displayed
0 - 1000d 500 msec 1200 msec
1000d+ 750 msec 1400 msec
Maximum mean average
Factory default settings: 9600 baud, 7 data bits,
even parity, 1 stop bit.
Standard 9-pin pass through RS-232 interface
cable included, (not a null modem).
RS-232 bidirectional configurable 1200 to 19.2 K
baud. Transmits weight and scale status whenever ASCII “W” <CR> is sent by a remote device.
Model 7600 Family PWC User’s Manual
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Model 7600 Family PWC User’s Manual
Initial Setup
Unpacking the Scale
Installing the Scale
1. Check container for any obvious evidence of
damage.
2. Remove contents of the shipping container.
3. Inspect the scale for shipping damage.
Immediately report any damage to the
shipper.
1. Mount the scale on a stable, level surface
free from air currents and vibration. Be sure
the scale platter does not touch any adjacent
surfaces.
2. To install the scale surface flush with a
countertop, use these dimensions to guide
construction:
Platform Minimum Cutout
Dimensions Dimensions
7620 14" W 14.75" W
12.5" D 13.25" D
4.2" Min Ht.
7680 18" W 18.75" W
18" D 18.75" D
4.6" Min Ht.
3. Loosen the plastic collars (7620) or jam nut
(7680) on the leveling feet. Level the scale by
using the level bubble under the scale platter
as a guide. Be sure all four feet are in firm
contact with the counter, then tighten all
collars (nuts).
Model 7600 Family PWC User’s Manual
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Operation
4. Make sure all power cords, remote display
cables, etc. are not touching the live weighing
surface.
5. Plug the unit into an appropriate (properly
grounded) voltage outlet.
Power Up
Test Sequence
If RAM or ROM error
is reported, you must
press the UNITS key
to acknowledge the
condition.
Performing a Normal
Weighment
If the scale is outside
the ±10% zero
window, center dashes
are displayed.“
Reapply power to
reset the initial zero
setting.
_ _ _ _
When the unit is first powered on it will perform a
test sequence. During this sequence the display
will show the following:
• The model number and software revision
level
• A numeric counting test of all segments of
the display
• A test of Random Access Memory (RAM)
• A test of Read Only Memory (ROM)
If everything is OK, the display will show zero
weight and the scale is ready for use.
1. With the scale powered on, make sure the
scale platter is empty and the display is at
zero. If it is not, press the ZERO key…
0.000 is displayed.
”
2. Place an item to be weighed on the scale
platter…
The scale will display the gross weight.
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3. Remove the item from the scale platter.
Model 7600 Family PWC User’s Manual
Model 7620 or 7680 Resident Display
Operational Controls
ZERO Key – The ZERO key will zero the scale if
weight is stable, functions as the NO or SCROLL
key in the Menu mode, and as the INCREASE
key in the Gravity mode.
UNITS Key – The UNITS key can be used to
change the scale unit of measure or to recall the
scale configuration information during the initial
power-up test sequence. This key also functions
as YES or ACCEPT in the Menu mode, and as
the DECREASE key in the Gravity mode.
Remote Display
All NCI 7600 bench scales can have an optional
remote display (shown above with no keyboard
function). If a remote display with keyboard is
used, then Switch 3 (shown in Figure 1) determines which display keyboard is functional.
Switch 3 Settings
Closed= internal display keys operational
Open = external display keys operational
The remote display must be connected to the
RJ45 port (“DISPLAY”) on power up to operate
properly.
Model 7600 Family PWC User’s Manual
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Accessing the
Menu Mode
The 7600 family powers up in normal weighing
mode ready for weighing operations. You can
access the Menu mode by setting Switch 1
shown in Figure 1 to the OPEN or Menu mode
position.
Accessing the Gravity
Setting Mode
Figure 1
7620 Switch Location
Bottom View
of Model 7680
Access the Gravity setting mode by setting
Switch 2 shown in Figure 1 to the OPEN or
Gravity mode position.
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Model 7600 Family PWC User’s Manual
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