Montalvo A4 User manual

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EST . 1947
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TECHNICAL MANUAL
A4 Digital Amplier
Hardware Version 3.0
Firmware Version 1.3 (starts w/SN 306179)
Publication Date: 01/28/2020
FIRMWARE
VERSION
1. 3

EST . 1947
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A4 Digital Amplier
__ ___________________________________________________________________________________
Technical Manual
INDEX
Specications
Dimensions ...............................................................................................3
Technical Data...........................................................................................3
Installation
Mounting A4 .............................................................................................4
Connecting Power Supply.........................................................................5
Connecting Signal Output .........................................................................5
Connecting Load Cells
Dual Half Bridge Semiconductor Strain Gauge Load Cells.........................6
Single Full Bridge Semiconductor Strain Gauge Load Cells .......................7
Single Half Bridge Semiconductor Strain Gauge Load Cells ......................8
Dual Full Bridge Foil Gauge Load Cells......................................................9
Calibration (rmware v1.3 - starts w/ SN 306179)
Zero Point ...............................................................................................10
Calibration ..............................................................................................10
Keypad Lockout (rmware v1.3 - starts w/ SN 306179)
Introduction.............................................................................................11
Locking the Keypad ................................................................................11
Unlocking the Keypad .............................................................................11
Blinking Codes (rmware v1.3 - starts w/ SN 306179)
Introduction.............................................................................................12
Descriptions............................................................................................12
Digital Amplier Utility
Overview.................................................................................................14
Downloading / Installation .......................................................................15
Screen Descriptions ................................................................................16
Calibration...............................................................................................26
Password................................................................................................26
Filtering ...................................................................................................26
Troubleshooting
Software .................................................................................................27
Hardware ................................................................................................27

EST . 1947
A4 Digital Amplier
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Technical Manual
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SPECIFICATIONS
1234567891011121314
CAL ZERO
A4
Digital Amplier
1 : +Ex
2 : Sig
3 : -Ex
4 : +Ex
5 : Sig
6 : -Ex
7 : TOTAL 4-20mA
8 : TOTAL 0-10V
9 : LEFT 0-10V
10 : RIGHT 0-10V
11 : GND
12 : +24 VDC
13 : GND
14 : GND
}
Left Load Cell
}
Right Load Cell
}
Input
SN:
2.78
(70.6)
3.23
(82)
14 pin connector
screw terminal
0.97
(24.5)
0.30
(7.5)
DIN RAIL mount
EN-50035
1.31
(33.4)
USB type B
}
Output
Proportional
To Tension
Dimensions
Supply Voltage 24VDC
Overvoltage Category III (IEC 66-4)
Load Cell Input Range ±50mV / ±250 mV
Load Cell Supply 5 VDC ±1%
Gain Adjustment 11 to 510
Maximum Power Consumption 3.5VA
Maximum Power Supply Fuse 10A
Connector 14 pin / screw
Communications Connector USB Type B
Mounting Type DIN Rail EN-50035
Mounting Orientation Not Critical
Temperature-Operating +14 to +122ºF (-10 to +50ºC)
Temperature-Storage +14 to +176ºF (-10 to +80ºC)
Humidity <95% Non-Condensing
Degree of Protection IP20 (IEC 529)
A4 #11000601 Semiconductor Strain Gauge Type
A4 #11000859 Foil Gauge Type
Technical Data
Load Cell Compatibility

EST . 1947
p. 4
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A4 Digital Amplier
__ ___________________________________________________________________________________
Technical Manual
INSTALLATION
Mounting A4
1The A4 should be mounted in a suitable cabinet for maximum protection,
however it may be installed just about anywhere for convenience. Avoid
dusty or wet locations.
2Mount the A4 to a standard 35mm DIN rail section (EN-50035).
3Ground the A4 using either terminal 11 or 14.
4If the A4 is to be used in conjunction with PC for setup and monitoring,
make sure to provide cable/plug access to the USB port which is located
on the top.
1234567891011121314
CAL ZERO
A4
Digital Amplier
SN:
35mm
DIN RAIL mount
EN-50035
USB type B

EST . 1947
A4 Digital Amplier
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Technical Manual
p. 5
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INSTALLATION
Connecting Power Supply
1Connect 24VDC 3 wire power supply to terminals 12 (+24V), 13 (0V) using
either 11 or 14 as GND.
2Make sure to provide current overload protection.
Connecting Signal Output
1Connect meters such as Montalvo’s analog M4, digital meters or a PLC to
OUTPUT terminals 7 thru 10 as desired. Note: Depending on the load cells
` used, the Left (terminal 9) and the Right (terminal 10) outputs may not be
available.
1234567891011121314
CAL ZERO
A4
Digital Amplier
(14) GND
(13) OV
(12) +
24V
(11) GND
(10) Right 0 to 10V
(9) Left 0 to 10V
(8) Total 0 to 10V
(7) Total 4 to 20mA
Power Supply INPUT
Signal OUTPUT

EST . 1947
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A4 Digital Amplier
__ ___________________________________________________________________________________
Technical Manual
CONNECTING LOAD CELLS
1234567891011121314
CAL ZERO
A4
Digital Amplier
+
Excitation (1)
Left Signal (2)
-
Excitation (3)
-
Excitation (4)
Right Signal (5)
+
Excitation (6)
BN or RD
WH
BK
BN or RD
WH
BK
(14) GND
(13) OV
(12) +
24V
(11) GND
(10) Right 0 to 10V
(9) Left 0 to 10V
(8) Total 0 to 10V
(7) Total 4 to 20mA
RIGHT Load Cell
LEFT Load Cell
Standard conductor colors for Montalvo load cell cables
4 pin connector 6 pin connector 3 pin connector
Brown (BN) Red (RD) Red (RD)
White (WH) White (WH) White (WH)
Black (BK) Black (BK) Black (BK)
Blue (BU) Green (GN) -
Wiring for Montalvo ES / U/ DRD / DRC*Series Load Cells
• Dual Half Bridge Semiconductor Strain Gauge load cells
• Requires A4 Amplier #11000601
* DRC load cells are standard as Full bridge with Half bridge as an option.

EST . 1947
A4 Digital Amplier
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Technical Manual
p. 7
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CONNECTING LOAD CELLS
1234567891011121314
CAL ZERO
A4
Digital Amplier
+
Excitation (1)
+
Signal (2)
-
Excitation (3)
-
Signal (5)
BN or RD
WH
BK
BU or GN
(14) GND
(13) OV
(12) +
24V
(11) GND
(8) Total 0 to 10V
(
7
)
Total 4 to 20mA
LEFT Load Cell
Standard conductor colors for Montalvo load cell cables
4 pin connector 6 pin connector 3 pin connector
Brown (BN) Red (RD) NA
White (WH) White (WH) NA
Black (BK) Black (BK) NA
Blue (BU) Green (GN) NA
Wiring for Montalvo N/ X/ TSR / N-Micro Series Load Cells
• Single Full Bridge Semiconductor Strain Gauge load cells
• Requires A4 Amplier #11000601

EST . 1947
p. 8
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A4 Digital Amplier
__ ___________________________________________________________________________________
Technical Manual
CONNECTING LOAD CELLS
1234567891011121314
CAL ZERO
A4
Digital Amplier
+
Excitation (1)
Left Signal (2)
-
Excitation (3)
BN or RD
WH
BK
(14) GND
(13) OV
(12) +
24V
(11) GND
(8) Total 0-10V
(7) Total 4 TO 20mA
LEFT Load Cell
100Ω resistor (4)
(5)
100Ω resistor (6)
Standard conductor colors for Montalvo load cell cables
4 pin connector 6 pin connector 3 pin connector
Brown (BN) Red (RD) Red (RD)
White (WH) White (WH) White (WH)
Black (BK) Black (BK) Black (BK)
Blue (BU) Green (GN) -
Wiring for Montalvo ES / U/ DRD / DRC*Series Load Cells
• Single Half Bridge Semiconductor Strain Gauge load cell
• Requires A4 Amplier #11000601
* DRC load cells are standard as Full bridge with Half bridge as an option.

EST . 1947
A4 Digital Amplier
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Technical Manual
p. 9
www.montalvo.com / Technical details subject to change without notice. A4-technical manual-US © Montalvo
Standard conductor colors for Montalvo load cell cables
4 pin connector 6 pin connector 3 pin connector
Brown (BN) Red (RD) Red (RD)
White (WH) White (WH) White (WH)
Black (BK) Black (BK) Black (BK)
Blue (BU) Green (GN) -
CONNECTING LOAD CELLS
Wiring for Montalvo LP Series Load Cells
• Dual Full Bridge Foil Gauge load cells
• Montalvo LP Full Bridge Foil Gauge load cells require A4 Amplier #11000859
• A4 is not compatible with Dual Full Bridge Semiconductor Stain Gauge load cells
* Montalvo LP load cells may require swapping excitation connections to
terminals 4& 6to generate a positive signal, depending on connector position
and/or load cell mounting position/orientation.
Dual Montalvo LP Load Cells using
Standard Montalvo Cables:
Conductor Color to A4 Terminal #s
WH both to terminal 2
BU both to terminal 5
BN left to terminal 1 and right to 4*
BK left to terminal 3 and right to 6*
1234567891011121314
CAL ZERO
A4
Digital Amplier
+
Excitation (1)
Left Signal (2)
-
Excitation (3)
+
Excitation (4*)
Right Signal (5)
-
Excitation (6*)
(14) GND
(13) OV
(12) +
24V
(11) GND
(10) Not Available
(9) Not Available
(8) Total 0-10V
(7) Total 4 to 20mA
RIGHT Load Cell
LEFT Load Cell
T
T
C
C
T
T
C
C
(5)
(4*)
(6*)
(3)
(5)
(1)
(2)
(2)

EST . 1947
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A4 Digital Amplier
__ ___________________________________________________________________________________
Technical Manual
CALIBRATION
Zero Point
1Connect the load cells to the A4 as described in the WIRING section.
2Apply power to the A4 and let it warm up for at least 10 minutes.
3With web removed and no tension on the load cell roller, press the ZERO
button on the A4 and hold it until the LED above the button ashes green.
When the zero point on the A4 is calibrated, it will automatically adjust the full
scale value to keep the measurement range the same as it was prior to the new
calibration.
Calibration
1Select a weight that is 20% of the maximum load expected to be present
on the load cells. If desired, the Windows application can be used to pick
a different percentage of total weight. This is particularly useful in
applications where a 20% weight is much too large to be practical.
2Suspend the chosen weight from a rope that has been fed through the
rollers of the machine exactly as the feed material will be in the application.
It is important that the rope match the wrap angles on the roller that will be
used when the machine is running.
3Spin all of the rollers the rope wraps around in the direction of the weight.
This is done to counteract friction forces on the rope from the rollers, which
will cause inaccurate readings.
4Press and hold the CAL button on the A4 until the LED above it ashes
green. Alternatively, the windows app can be used to set the full scale.
Resetting the A4 to factory default settings
See TROUBLESHOOTING page 27.
Known
Weight
Rope fastened
to this roller
Load Cell
Roller