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LARGE DIGITAL DISPLAY PROCESS INPUT GAC 057-280 1
INSTRUCTION MANUAL
LARGE DIGITAL DISPLAY
PROCESS INPUT
GAC 057-280
MAGAC057-280/E 2
NOTES 3
CONTENTS.
SECTION
PAGE
INTRODUCTION
..................................................................................................
4
1.0
UNPACKING AND INSPECTION
..............................................................
5
2.0
GENERAL INFORMATION
.......................................................................
5
2.1 Datasheet........................................................................................................
6,7
3.0
INTERNAL CABLES
...................................................................................
8
3.1 Signal cables....................................................................................................
8
3.2 Power cables..................................................................................................
8
DETAILED OPERATING INFORMATION
4.0 Analogue I/P Selection.....................................................................................
9
4.1 Jumper Functions and Positions................................................................. ......
9
4.2 Analogue Input connections..............................................................................
10
4.3 RS485 output notes.........................................................................................
10
4.4 Contact Closure Remote Programmer connections............................................
11
4.5 Programming your display................................................................................
11
4.6 The Programming Menu ...................................................................................
12
4.7 Programming Flow Chart..................................................................................
13
4.8 The Configuration Number and what it does......................................................
14
4.9 1st Config. Number Digit ... Behavior................................................................
14
4.10 2nd & 3rd Config. Number Digit ... Filtering...................................................
14
4.11 4th Config. Number Digit ... Data O/P Baud Rate............................................
14
4.12 5th Config. Number Digit ... Response Number...............................................
15
4.13 6th 'INVISIBLE' Config. Number Digit ... Brightness setting............................
15
5.0
INSTALLATION
...........................................................................................
15
5.1 Mounting positions............................................................................................
16
5.2 Panel mounting.................................................................................................
16
5.3 Wall mounting...................................................................................................
16
5.4 Suspension mounting.........................................................................................
16
5.5 Multiple display mounting..................................................................................
17
6.0
TROUBLE SHOOTING AND MAINTENANCE, Error messages
..........
17
7.0
SAFETY CONSIDERATIONS
..
............................................................
17
8.0
WARRANTY.
.................................................................................................
18
9.0
DIMENSIONS
...............................................................................................
19 4
THE PROCESS INPUT MODEL - GAC 057-280
INTRODUCTION
This model is intended for large measurement display use. It accepts the most commonly encountered
process signals of 0-10mA, 0-20mA, 4-20ma, 1-5VDC and 0-10VDC, and is fully scaleable to read in
engineering units. Scaling can be carried out remotely, whilst the display is in-situ, and because no
potentiometers are used, the display stability is superb.
An excitation supply is available to power 2 wire transmitters, or to boost loop drive if required. The
decimal point can be placed as required, and the least significant digit can be made to count in units, 2's, 5's
or 10's.
The right hand digit can be blanked, effectively 'centralising' the display if less than 5 digit resolution is
required.
If specifically ordered , we can supply the displays with a silk screened legend identifying the measurement
being displayed, for example, Kg., Deg. C. etc..
An RS485 output is provided, useful for feeding remote mimic displays.
The configuration settings and calibration constants of the display are stored in non-volatile E
2
PROM
memory, which is retained for at least 10 years. Change to the settings is achieved by way of remote
contact closure inputs, allowing alteration of the units configuration menu, calibration and brightness.
The case is sealed to IP65/NEMA4, and the lens is 4mm thick polycarbonate, making it ideal for use in
food industry washdown applications. 5
1.0 UNPACKING AND INSPECTION
PLEASE check the cartons contents as soon as possible after receipt, to detect any transit damage or
losses.Unpack the contents and check each item in the box against the check list below to make sure you
have all items.
Check List :
Handbook
Display
Mounting kit ( where appropriate )
Programming Unit ( If Ordered )
In the event of damage, please contact the carrier and advise our sales office of the fault.
Please retain the carton packing material, for future possible use.
2.0 GENERAL INFORMATION
This display is part of a family of units for broadcasting process values and data on easy to read large 7
segment displays. Character heights of 57 - 102 - 144 - 200 - 280 mm are standard, and displays have
5 digits. Extra-large and Daylight viewing displays are available to special order.
The enclosures for the displays are of welded UPVC material with tough lenses, providing certified
protection to NEMA4 for the internal electronics.
Case colors are white or black.
The units incorporate a 95 to 265VAC power supply ( Which can be used on DC in the range 100 to
300 VDC ) for operation off any power source without the need to re-configure.
Display brightness is settable to 4 levels to accommodate differing ambient light conditions and the
3 standard character heights provide a choice of viewing distances of up to 20, 40 and 60 metres.
Other character heights and brightnesses are available to special order.
The large displays are based around a common power and control card which is linked to display
units of different sizes.
Instrument behaviour is set by way of remote contact closure pushbuttons, which provide access to
and alteration of the instruments menu, and the settings are stored in 10 year non-volatile memory. 6
GAC 057-280
Data Sheet
GAC 057 - 280 Series
Large Digital Displays
FEATURES
Suspension-Mounted Large LED Displays
Digit Sizes: 57, 102, 144, 203 and 288 mm
Sealed IP65 for Models 057,102,144:
IP54 for models 203 and 280
Fully Corrosion Resistant
Adjustable Brightness
Power Supply: 95 to 265 VAC,
optional 11 to 30 VDC or 48 VAC
Input: 0to 10V, 0-20mA or 4 to 20mA
Fully Scalable in kg, tonne(t), kN and Other
Engineering Units
Auto Tare Facility
Optional RS422 Serial Output
DESCRIPTION
For use with Magtrol Load monitoring Units (LMUs) and
Load Conditioners (AN Series), these high quality, large
character digital displays are used for crane weight display,
process weight display and all remote weighing applications.
They use microprocessor based technology for high reliability
and have nonvolatile memory for all calibration data.
Model GAC 102/0/1/0
Large Digital Display
LOAD-FORCE-WEIGHT SYSTEMS
Magtrol Large Digital Displays are used with our Load
Monitoring Units (LMUs) or Signal Conditioners (AN Series)
as part of a complete measurement system. Magtrol Load
Measuring Pins, which measure load and force and provide
overload protection, are offered along with a wide range of
Load-Force-Weight Transducers in various executions and
accuracy classes. Combined, these products constitute an ideal
safe measurement system which continuously checks for
overloads and short circuits.
SYSTEM CONFIGURATION
543.58
LMU 11x
Load Monitoring Unit
LB 2xx
Load Measuring Pin
GAC 057 - GAC 280 LARGE DIGITAL DISPLAY
DIMENSIONS
GAC 057
GAC 102
GAC 144
GAC 200
GAC 280
MODEL
Digit Height
Viewing
Distance
Unit Width
Unit Height
Unit Depth*
Weight
mm in m ft mm in mm in mm in kg lb
57
102
144
203
280
2.2
4.0
5.7
8.0
11.0
20
40
60
80
110
65
131
196
262
360
288
480
624
824
1172
11.3
18.9
24.6
32.4
43.1
120
168
192
248
336
4.7
6.6
7.6
9.8
13.2
90
90
90
90
90
3.54
3.54
3.54
3.54
3.54
2.5
4.5
5.5
7.0
12.0
5.5
9.9
12.1
15.4
26.4
* Unit depth does not include stuffing gland, which is approximately 20 mm (0.79 inches) in length.
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