Rice Lake DIGI DS-520 User manual

73366
DS-520
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DS-520 SERIES OPERATING MANUAL
INDEX
SECTION PAGE
NUMBER
1.0 GENERAL 2-3
1.1. Features 2
1.2. Keyboard & Display Layout 2
1.3. Key Switch Information 3
1.4. Indicator Lamp Information 3
2.0 SPECIFICATIONS 4
2.1 Technical Specifications 4
3.0 INSTALLATION 5-6
3.1 Un-packing 5
3.2 Inspection 5
3.3 Re-packing 5
3.4 Un-locking Procedure 5-6
4.0 DS-520 OPERATIONAL PROCEDURES 7-8
4.1. Power On/Off 7
4.2. Automatic Shut Off 7
4.3. Re-zero 8
4.4. Tare Reduction 8
5.0 MAINTENANCE MODE 9-12
5.1. Spec Entry 9
5.2. Spec Entry and Span Adjustment 9-10
5.3. Internal Count and A/D Count Display 10
5.4. Spec List 11
5.5. Error Messages 11
5.6. Maintenance, Calibration, Test Procedures & Service 12

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1.0. GENERAL
1.1. Features
•Wash down (IP-65) digital weighing scale
•Quick response to weight changes
•Capacity: 60 lb, 150 lb, 300 lb
•Resolution:
A. Display resolution1/1000 (multi range) internal res.1/6000
B. Display resolution1/3000 (single range) internal res. 1/24000
•Low power consumption : 6 x C cell batteries for more than 200 hours of continuous
use
•Fast self test procedure when power on
•Selectable automatic shut off time which prolongs battery life
•Two point low battery detect:
A. When battery is weak, the battery indicator will light
B. When the power from the battery becomes too low to weigh accurately, all displays
will shut off except the battery indicator. The power is shut off after 1 minute.
•Calibration by software
•High contrast LCD display
•3 keys REZERO key, TARE key, ON/OFF key
•Stainless steel platform and indicator housing
1.2. Keyboard & Display Panel Layout

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1.3. Key Functions
•REZERO Key Reset weight display to zero
•TARE Key Set or clear a tare
•ON/OFF Key Turn the power ON or OFF
1.4. Indicators Lamps
•Zero On when zero point is adjusted and when weight is stable
•Net On when tare reduction is performed
•Battery On when battery is weak

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2.0. SPECIFICATIONS
2.1.1. Technical Specifications
This section includes a detailed listing of all pertinent specifications
and parameters for the DS-520 weighing scales. The system weighing
accuracy is 0.03 % . All models meet or exceed the requirements of
OIML, Class III, and NIST Handbook, Number 44.
2.1.2. Operating conditions
•Power source 12VDC w/DC adapter or 9VDC w/6 “C” cell battery
•Operating temperature -10°C ≈+40°C (OIML)
•Operating humidity 15 – 85% RH
•Power consumption 0.07w when 6V, 0.1w when 9V
2.1.3. Analog specification
•Input sensitivity 0.67mV/V- 10kg & 20kg, all other capacities 1mV/V
•Zero adjust range 40% Full Scale
•Zero balance range 10% Full Scale
•L/C applied voltage DC 5V
•Speed of A/D conversion 4 times /sec.
•Internal resolution 16000 or 24000
2.1.4.Display Specification
•Weight display 6 digits with ZERO, TARE, LOW BATTERY indication
•Spec Display 6 digits
•Decimal Point Spec Selectable
2.1.5. Dimensions
•Platter size 16"L x 16"W x 4 _"H
•Overall size 22 _"L x 16"W x 4 _"H
•Tall column 18 _"L x 16"W x 36" Overall height
2.1.6. External connectors
•DC receptacle

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3.0. INSTALLATION
This section provides the information required for installing this weighing system
for operation. The following steps accomplish installation.
1. Unpacking
2. Set-up Procedure
3.1. Unpacking
Each component of the DS-520 system is packed in a specially designed carton.
Remove each component from its carton, separate the component from its
polystyrene shell assembly and set aside. Inspect the carton interior to be sure
that all accessories have been removed from the carton. Inspect the carton inner
panels for accessories.
NOTE: Be sure to repack all materials within the carton set. Store the cartons in a secure area so they
can be available whenever future shipment of the scale is required.
3.2. Inspection
Immediately after unpacking, a visual inspection of the scale should be performed.
If any damage has been incurred during transportation notify the shipper and Rice Lake
Weighing systems immediately. Instructions for assessment of damage and further
procedures will then be determined.
3.3. Repackaging
If, at anytime, the DS-520 weighing scale must be returned for modification,
calibration, or repair, be sure that it is properly packed with sufficient cushioning
materials. Whenever possible, the original carton assembly should be retained for
this purpose. Any damage caused by improper packaging will not be covered by
warranty.
3.4. Unlocking Procedure
The unlocking procedure is included on the next page. The DS-520 should
be properly locked whenever it is being transported. See next page for un-locking
procedure.
NOTES:
•Remove 4 M6 screws and lock bracket as shown on page 6. Also check the overload stop. Ensure
that nut is screwed tightly.
•Locking procedure should include tightening nut until it fully stops.

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Unlocking Procedure (Continued)

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4.0. DS-520 OPERATIONAL PROCEDURES
4.1. Power On/Off
1. Press [ON/OFF] key to turn on the scale.
The display will briefly show all segments, then blank for a second, then go into weighing mode.
2. Press [ON/OFF] key to turn off the scale.
4.2. Automatic Shut Off Timer Setting
1. Begin with the scale turned off.
2. Press and hold the [ON/OFF] key for 3 seconds. This sets the Timer for 3 minutes.
3. Release the [ON/OFF] key when the display shows the number 3. The display will then briefly
show all segments, then blank for a second, then go into weighing mode.
1. Begin with the scale turned off.
2. Press and hold the [ON/OFF] key for 6 seconds. This sets the Timer for 10 minutes.
3. Release the [ON/OFF] key when the display shows the number 6. The display will then briefly
show all segments, then blank for a second, then go into weighing mode.
1. Begin with the scale turned off.
2. Press and hold the [ON/OFF] key for 9 seconds. This sets the Timer for no auto shut off.
3. Release the [ON/OFF] key when the display shows the number 999. The display will then
briefly show all segments, then blank for a second, then go into weighing mode.

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4.3. Rezero
Example 1 Begin in the weighing mode with the scale showing 0.00 Example based on 60 lb
scale.
1. Place 20 lb on the scale.
2. Press the [REZERO] key. The display will show all segments briefly, then go to 0.00
Example 2 Begin in the weighing mode with the scale showing 0.00 Example based on 60 lb
scale.
1. Place 25 lb on the scale.
2. Press the [REZERO] key. The display will show all segments briefly, then go to 25.00.
25lb exceeds the 40% limit of the rezero range.
4.4. Tare
Example : Begin in the weighing mode with the scale showing 0.00 Example based on 60 lb.
scale.
1. Place 20 lb on the scale.
2. Press the [TARE] key. The display will go to 0.00
3. Remove weight from scale. The display will go to -20.00
4. Press the [TARE] key. To clear the tare

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5.0. MAINTENNCE MODE
5.1. Specification Entry
Example : Begin in the weighing mode with the scale showing 0.00
1. Press and hold [REZERO] key, while holding the [REZERO] key, press [TARE] [TARE]
[ON/OFF] then release the [REZERO] key. The display will show all 8’s while holding the
[REZERO] key, when the [REZERO] key is released the scale will be in the Maintenance Mode.
2. Press the [TARE] key. The display will show the software version.
3. Press the [TARE] key. The display will show S0 0 0 0 (spec 0 = 0 0 0)
4. Press the [ON/OFF] key. To change spec data (0 0 0 – 1 1 1)
Ex: Press [ON/OFF] S0 0 0 1, Press [ON/OFF] S0 0 1 0, Press [ON/OFF] S0 0 1 1,
5. Press the [TARE] key. To store spec data and advance to the next spec. S1 0 0 0
6. Press the [REZERO] key. To save specs to memory and return to the weighing mode.
5.2. Specification Entry and Span Adjustment
Example : Begin in the weighing mode with the scale showing 0.00
1. Press and hold [REZERO] key, while holding the [REZERO] key, press [TARE] [TARE]
[ON/OFF] then release the [REZERO] key. The display will show all 8’s while holding the
[REZERO] key, when the [REZERO] key is released the scale will be in the Maintenance Mode. The
display will show d5-671.
2. Press the [TARE] key. The display will show the software version.
3. Press the [TARE] key. The display will show S0 0 0 0 (spec 0 = 0 0 0)
4. Press the [ON/OFF] key. To change spec data (0 0 0 – 1 1 1)
Ex: Press [ON/OFF] S0 0 0 1, Press [ON/OFF] S0 0 1 0, Press [ON/OFF] S0 0 1 1,