Intrinsically Safe Instrument
With Intalogix™ Technology
Document 50647
Manufactured by Fairbanks Scales Inc.
821 Locust
Kansas City, Missouri 64106
AMENDMENT RECORD
Issue #1 09/01 Created and released manual.
Issue #2 11/01 Updated specifications.
Issue #3 03/02 Updated specifications and procedures
Issue #4 08/02 Updated specifications for 4-20mA
Issue #5 01/03 Updated drawings, note, and caution graphics.
Issue #6 11/06 Updated specifications for 4-20mA.
Revision 7 10/07 Updated format, images, and technical specifications.
Revision 8 07/09 Updated Control Drawings, formatting, added down
weighing information
Revision 9 01/12 Updated Battery Charger revision information and FM
Control Drawings in Appendix II.
01/12 3 50647 Rev. 9
Disclaimer
Every effort has been made to provide complete and accurate information in this manual. However,
although this manual may include a specifically identified warranty notice for the product, Fairbanks
Scales makes no representations or warranties with respect to the contents of this manual, and
reserves the right to make changes to this manual without notice when and as improvements are
made.
It is the responsibility of the requesting party to develop, maintain, install, and connect networking
devices and general network connectivity as it applies to the originating party’s network. No warranty
or guarantee, expressed or implied, concerning the network, its design, its installation, or operational
characteristics has been offered by Fairbanks Scales. Fairbanks Scales shall not be liable for any
loss, damage, cost of repairs, incidental or consequential damages of any kind, whether or not based
on express or implied warranty, contract, negligence, or strict liability arising in connection with the
design, development, installation, or use of an intended network.
This document contains proprietary information protected by copyright. All rights are reserved; no part
of this manual may be reproduced, copied, translated or transmitted in any form or by any means
without prior written permission of the manufacturer.
01/12 4 50647 Rev. 9
Table of Contents
SECTION 1: GENERAL INFORMATION .................................................................. 7
The model 2800 series is an Intrinsically Safe instrument utilizing Intalogix™
Technology. It is Factory Mutual (FM) Approved for direct use in hazardous
environments as shown in the FM Approved Control Drawings.
The 2800 series instrument eliminates the need for explosion proof enclosures or
purging systems. Enclosed in a stainless steel, NEMA 4X enclosure, the
instrument is able to withstand both wash down and corrosive environments.
Major features of the Instrument include push-button programming and calibration,
with data storage in nonvolatile ROM for 100% memory retention.
The 2800 series instrument features a large 1.25 inch high LCD weight display
with an additional alphanumeric status display, which can be tilted up or down to
accommodate different lighting conditions. Its microprocessor controlled design
allows the instrument to be rapidly programmed at installation to meet the specific
requirements of the application.
The obtainable accuracy meets Handbook 44 requirements, and the instrument is
approved for commercial applicationup to 10,000 divisions. A maximum of
30,000 divisions can be achieved for non-commercial applications.
This ultra-low power instrument can interface to analog load cells through an
Intalogix™ intrinsically safe controller or can be connected directly to analog load
cells using an available optional accessory.
The instrument provides fiber optic interfaces from the hazardous area to the
optional accessories located in a safe area. The optional accessories provide
communications to various types of peripheral devices in selectable formats for
RS232, and 20mA data outputs. Other available options include analog interfaces
through programmable setpoints and 4-20 ma analog outputs. The instrument may
be powered by a battery or a continuous power accessory.
01/12 7 50647 Rev. 9
1.2. SPECIFICATIONS
Section 1: General Information
Instrument Approvals
FM Approvals
NTEP: CoC 01-009
CWM: Pending
Class I, II, and III
Division 1
Groups A, B, C, D, E, F, and G
* For more detailed information, see FM Control Drawing 21943.
Appendix II.
see
Physical Dimensions Approximately 13"W x 9"H x 3"D
Material Stainless Steel
Enclosure Rating
Capacities Service programmable up to 999,950 lb, kg, oz, g, tons, lb-oz, or gallons
Division Sizes
Resolution
Sensitivity
Load Cells Up to 16 - 350 or 1000 ohm impedance
Load Cell Cable
Length/Wire Gauge
NEMA 4X
IP65
Service programmable for .0002 to 50
Fixed at one (1) oz. in the lb/oz mode
Commercial - Up to 10,000 divisions maximum
Noncommercial - Up to 30,000 divisions maximum
1µv/d (microvolt/division)
75' maximum
20 AWG maximum
Display Weight Display
1.25" height
7 segment LCD
Status Display
.38" x 3.73" Alphanumeric LCD
16 characters - .38" x .191" character size
Zero Range Service programmable - Disabled, 2, or 100%
Auto-Zero-Tracking Service programmable - Disabled, .5, 1, or 3 divisions
Motion Detection Service programmable - Disabled, .5, 1, or 3 divisions
Digital Filter Service programmable from disabled up to heavy
Display Update Rate Service programmable settings from .1 to .8 seconds.
Environment
Chemical Resistance Resistant to all petroleum derivatives and salts.
This accessory allows a direct connection of the Model 2800 Series
Instrument.
It is located in the hazardous area to the Accessories 2850 and 2860, in the non-hazardous, safe area for I/O operation. Maximum fiber optic cable distance is 200
feet. Do not place the fiber optic cable within conduits.
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1.4. TYPICAL SYSTEM LAYOUT #1
Section 1: General Information
SEE CONTROL DRAWINGS
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1.5. TYPICAL SYSTEM LAYOUT #2
Section 1: General Information
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Section 2: OPERATION
2.1. CUSTOMER/ OWNER RESPONSIBILITIES
It is the customer/ owners' responsibility to maintain, the platform,
instrument, and peripheral accessories in good order, and to
protect the equipment from accidental or malicious damage.
The installation shall be in accord with the manufacturer's instructions and with the
National Electric Code (ANSI-NFPA 70).
─ Refer to ANSI/ ISA-RP12.6, Installation of Intrinsically Safe Systems for
Hazardous (Classified) Locations for guidance on the installation of
intrinsically safe apparatus and systems.
Please follow these guidelines .
Do not break the seals on the instrument or attempt any internal
adjustments.
Absolutely no physical, electrical, or program modifications other than the
selection of standard options and accessories are to be made to this
equipment.
Electrical connections other than those specified may not be performed,
and no physical alterations (mounting holes and etc.)
are allowed.
No service, repairs, or adjustments, other than those
outlined in this manual, may be performed by untrained
service personnel.
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Section 2: Operation
2.2. SAFETY
As is in the case with any material handling equipment, certain safety precautions
must be observed during operation.
Never load the scale platform beyond its rated capacity.
─ Refer to the rating on the serial number plate to be certain.
Ensure that any structure which supports the platform is capable
of withstanding the weight of the platform plus its rated capacity
load.
Do not load the scale platform if there is any evidence of damage
to the platform or supporting structure.
Use safety chains or other suitable restraining devices if there is
any possibility of the load shifting, falling, or rolling from its
position on the load receiver.
01/12 18 50647 Rev. 9
2.3. FRONT PANEL KEY FUNCTIONS
Section 2: Operation
The function of the front panel keys varies depending on the mode in which the
instrument is operated. This Subsection defines the operation of each front panel key
when in the weighing mode.
ZERO KEY
When in the Gross mode, this key sets the Gross Weight to Zero.
─ If motion exists, the ZERO command will not be executed.
─ If the weight on the platform exceeds the zero limit, and the
pressed, the Zero command will not be executed.
ZERO key is
PRINT KEY
Used to transmit weight data to an external device.
GROSS/NET KEY
Toggles between the Gross and Net Weight modes.
─ It is also used to exit programming.
01/12 19 50647 Rev. 9
Section 2: Operation
2.3. FRONT PANEL KEY FUNCTIONS, CONTINUED
AUTO TARE
In the Gross or Net mode, this key sets Tare Memory equal to the Gross
Weight on the platform.
─ The instrument displays "0" weight and enters the Net Weigh
mode.
─ The NET Legend displays.
─ Auto Tare only operates if the Gross Weight is positive.
ID KEY
Enters numeric ID for printer or computer printout.
─ A maximum of six digits is available, 0 thru 999999.
TARE KEY
Displays the currently entered Tare Value.
UNITS KEY
Toggles the displayed weight between the units selected in the
Configuration Program (i.e. lb to kg or kg to lb.)
SCROLL KEYS
Moves through the Programming Menu Tree in an UPWARD or
DOWNWARD direction.
PROGRAM KEY
Enters into the instrument's Programming mode.
ON/OFF KEY
Turns instrument ON or OFF.
If the Sleep Function is selected, this key either disables or
enables the Sleep mode.
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2.3. FRONT PANEL KEY FUNCTIONS, CONTINUED
START/PEAK KEY
Initiates a Setpoint Operation.
Also enables Peak Net Tracking (PNT).
TRIM KEY
Overrides the Setpoint Cycle.
Adds weight in touch-controlled increments.
STOP/CLEAR
Terminates a Setpoint Cycle.
Resets the memory of the Peak Net Capture to a null value until
a new Peak Net Weight is captured.
Section 2: Operation
ENTER
Inputs commands to the Setpoint Operation.
NUMERIC KEYS (0 THRU 9)
Used for numeric entries, such as Tare, ID,
Setpoint Values, etc.
LCD DISPLAY
Displays weight on the load receiver and applicable prompts.
01/12 21 50647 Rev. 9
2.3. FRONT PANEL KEY FUNCTIONS, CONTINUED
Section 2: Operation
2497
2.3.1. LEGENDS
Several different legends display on the LED screen.
While most are self explanatory, the following items are defined.
CZ (Center of Zero).
RECHARGE
Battery power is low and will require recharging soon.
The RECHARGE legend displays when the input voltage from the Battery
Accessory 2830 falls below a threshold of approximately 5.4VDC when using
Accessory 2802, or 5.32VDC when using Accessory 2880.
01/12 22 50647 Rev. 9
CAUTION
Battery surfaces get very HOT during recharging.
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