Montalvo M Series User manual

www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
EST . 1947
207-856-2501 / 800-226-8710
[phone]
[phone]
[phone]
Need help installing?
www.montalvo.com
TECHNICAL MANUAL
M Series AmplierModules
For Models M3200 / M3224 / M3200LTR / M3300 / M3324
Publication Date: 10/21/2019

EST . 1947
p. 2
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
NOTES

EST . 1947
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
p. 3
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
INDEX
Conguration
DIP Switches ............................................................................................4
Fuses........................................................................................................4
DIP Switch / Fuse Location .......................................................................4
Dimensions ...............................................................................................5
Wiring
M3200 ......................................................................................................6
M3224 ......................................................................................................8
M3200LTR ..............................................................................................10
M3300 ....................................................................................................12
M3324 ....................................................................................................14
Calibration
Zero Point ...............................................................................................16
Calibration...............................................................................................16
Alarm Level Adjustment...........................................................................17
Specications
Technical Data.........................................................................................18

p. 4
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
CONFIGURATION
Model DIP Switch Settings Output Terminal
Affected
1**2**3456
3200
3224
3200LTR
M3300
M3324
--ON* ---
Total
0-10V* 13
- - OFF - - - 0-100A
---OFF* ON* OFF* 4-20mA*
14- - - ON OFF OFF 0-20mA
- - - ON OFF ON 0-10V
3200LTR
-ON* ----
Left 0-10V* 7
-OFF---- 0-100A
ON* -----
Right 0-10V* 8
OFF----- 0-100A
DIP Switches
Fuses
The M3200, M3200LTR and M3300 ship from the factory with fuses NOT
installed. Install the appropriate supplied fuse to match the voltage being used.
The M3224 and M3324 have resettable fuses to match the required 24V
power supply.
DIP Switch / Fuse Location
*Indicates factory setting.
** DIP switches 1and 2affact the M3200LTR only.
This module must be set up for the actual supply voltage.
If power supply is 115V
Step 1 Set power selector in position 115V
Step 2 Mount fuse 80mA T
If power supply is 230V
Step 1 Set power selector in position 230V
Step 2 Mount fuse 50mA T
Note: Power selector and fuses are
found under cover on top of module.
Caution
Failure to follow instructions
may result in equipment
damage or personal injury.
Montalvo
M3200/M3200LTR/M3300
Amplier Modules
230
DIP Switches
(1 thru 6)
POWER Switch (AC units only)
(115V or 230V - factory set to 230V)
Cover
(Fuse NOT installed on new units -
must be installed before operation)
FUSES (AC units only)
(115V or 230V - ships with both)

EST . 1947
p. 5
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
CONFIGURATION
M
3200
1 : Line L 2 : 3 : Line N 4 : 5 : Ground PE 6 : Ground 7 : NC. 8 : NC. 9 : +2.5V Supply 10 : + input +/- 250 mV 11 : - input +/- 250 mV 12 : -2.5V Supply 13 : Total output 0-10V / 0-100µA 14 : Total output 4-20mA / 0-20mA / 0-10V 15 : Ground (0VDC) 16 : Alarm output
2.95 (75)
4.13
(105)
1.77
(45)
1.42 (36)
0.16 (4)
Load Cell Ampliers
M
Dimensions

EST . 1947
p. 6
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
Line L (1)
Line N (3)
Total Output 0-10V / 0-100µA (13)
Total Output 4-20mA / 0-20mA / 0-10V (14)
Ground (0V DC) (15)
Alarm Output (16)
(8) No Connection
(7) No Connection
(6) Ground
(5) Ground PE
(12) - 2.5V Supply (excitation)
(11) - Input ± 250mV
(10) + Input ± 250mV
(9) + 2.5V Supply (excitation)
16 15 14 13 12 11 10 9
135678
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
WIRING
M3200 Overview
M3200 Block Diagram
Standard conductor colors for
Montalvo load cell cables
4 pin 6 pin 3 pin
# Color # Color # Color
1 Brown (BN) 1 White (WH) a White (WH)
2 White (WH) 2 Black (BK) b Black (BK)
3 Blue (BU) 3 Red (RD) c Red (RD)
4 Black (BK) 4 Green (GN) NA
123456
y
ON
See Conguration section
(p.4) for optional settings.
Dip Switch Factory Settings
GND 15
5
GND/PE
6
GND
UI14
500Ω
Total Output (process)
4-20mA/0-20mA/
0-10V
4
5
6
13
16
Total Output (meter)
0 to 10V/
0 to 100μA
Alarm Output
24VDC ±15%
Load > 650Ω
Load Cell
+Signal
± 250mV
Load Cell
- Signal
± 250mV
3
Alarm
Level
+100%
Gain
x1-60
Gain
x10
+100%
- 100%
Zero
CAL.
10
11
100kΩ
PSU
Voltage Switch
V+
V
-
+24V
Power
9 1
5
3
12
Load Cell
Supply
+2.5VDC
Load Cell
Supply
- 2.5VDC
L (supply)
N (supply)
GND

EST . 1947
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
p. 7
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
(15) Ground (0V DC)
(12) - 2.5V Supply (excitation)
(11) - Input ± 250mV (signal)
(10) + Input ± 250mV (signal)
(9) + 2.5V Supply (excitation)
BK WH BN
or
RD
16 15 14 13 12 11 10 9
BK WH BN
or
RD
Left
Load Cell
Right
Load Cell
(15) Ground (0V DC)
(12) - 2.5V Supply (excitation)
(11) - Input ± 250mV (signal)
(10) + Input ± 250mV (signal)
(9) + 2.5V Supply (excitation)
BK WH BN
or
RD
BL
or
GN
16 15 14 13 12 11 10 9
Left
Load Cell
BK WH BN
or
RD
BL
or
GN
Right
Load Cell
(15) Ground (0V DC)
(12) - 2.5V Supply (excitation)
(11) - Input ± 250mV (signal)
(10) + Input ± 250mV (signal)
(9) + 2.5V Supply (excitation)
16 15 14 13 12 11 10 9
BK WH BN
or
RD
BL
or
GN
Load Cell
WIRING
M3200 Wiring for Montalvo DRC** Series Load Cells
(Dual Full Bridge Semiconductor Strain Gauge Load Cells)
M3200 Wiring for Montalvo N/ X/ TSR / N-Micro Series Load Cells
(Single Full Bridge Semiconductor Strain Gauge Load Cells)
M3200 Wiring for Montalvo ES / U/ DRD / DRC** Series Load Cells
(Dual*Half Bridge Semiconductor Strain Gauge Load Cells)
*If using only a single Half bridge load cell, connect as Right load cell.
** DRC load cells are standard as Full bridge with Half bridge as an option.

EST . 1947
p. 8
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
WIRING
M3224 Overview
M3224 Block Diagram
No Connection (1)
+24V DC Supply (2)
No Connection (3)
Ground Supply (0V DC) (4)
Total Output 0-10V / 0-100µA (13)
Total Output 4-20mA / 0-20mA / 0-10V (14)
Ground (0V DC) (15)
Alarm Output (16)
(8) No Connection
(7) No Connection
(6) Ground (0V DC)
(5) Ground PE
(12) - 2.5V Load Cell Supply
(11) - Input ± 250mV (signa
(10) + Input ± 250mV (sign
a
(9) + 2.5V Load Cell Supply
16 15 14 13 12 11 10 9
1 24V
24V 0V
0V
3PE 678
M
3224
123456
y
ON
See Conguration section
(p.4) for optional settings.
Dip Switch Factory Settings
Standard conductor colors for
Montalvo load cell cables
4 pin 6 pin 3 pin
# Color # Color # Color
1 Brown (BN) 1 White (WH) a White (WH)
2 White (WH) 2 Black (BK) b Black (BK)
3 Blue (BU) 3 Red (RD) c Red (RD)
4 Black (BK) 4 Green (GN) NA
GND 15
PE
GND/PE
6
GND
UI14
500Ω
Total Output (process)
4-20mA/0-20mA
0-10V
4
5
6
13
16
Total Output (meter)
0 to 10V/0 to 100μA
Alarm Output
24VDC ±15%
Load > 650Ω
Load Cell
+Signal
± 250mV
Load Cell
- Signal
± 250mV
3
Alarm
Level
+100%
Gain
x1-60
Gain
x10
+100%
- 100%
Zero
CAL.
10
11
100kΩ
DC
DC
+15V
- 15V
Power
Load Cell
Supply
+2.5VDC
Load Cell
Supply
- 2.5VDC
9
12
24V
24VDC ±15% (supply)
0V
0VDC (supply)

EST . 1947
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
p. 9
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
(15) Ground (0V DC)
(12) - 2.5V Supply (excitation)
(11) - Input ± 250mV (signal)
(10) + Input ± 250mV (signal)
(9) + 2.5V Supply (excitation)
BK WH BN
or
RD
16 15 14 13 12 11 10 9
BK WH BN
or
RD
Left
Load Cell
Right
Load Cell
(15) Ground (0V DC)
(12) - 2.5V Supply (excitation)
(11) - Input ± 250mV (signal)
(10) + Input ± 250mV (signal)
(9) + 2.5V Supply (excitation)
BK WH BN
or
RD
BL
or
GN
16 15 14 13 12 11 10 9
Left
Load Cell
BK WH BN
or
RD
BL
or
GN
Right
Load Cell
(15) Ground (0V DC)
(12) - 2.5V Supply (excitation)
(11) - Input ± 250mV (signal)
(10) + Input ± 250mV (signal)
(9) + 2.5V Supply (excitation)
16 15 14 13 12 11 10 9
BK WH BN
or
RD
BL
or
GN
Load Cell
WIRING
M3224 Wiring for Montalvo ES / U/ DRD / DRC** Series Load Cells
(Dual*Half Bridge Semiconductor Strain Gauge Load Cells)
M3224 Wiring for Montalvo DRC** Series Load Cells
(Dual Full Bridge Semiconductor Strain Gauge Load Cells)
M3224 Wiring for Montalvo N/ X/ TSR / N-Micro Series Load Cells
(Single Full Bridge Semiconductor Strain Gauge Load Cells)
*If using only a single Half bridge load cell, connect as Right load cell.
** DRC load cells are standard as Full bridge with Half bridge as an option.

EST . 1947
p. 10
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
WIRING
M3200LTR Overview
M3200LTR Block Diagram
Line L (1)
Line N (3)
Total Output 0-10V / 0-100µA (13)
Total Output 4-20mA / 0-20mA / 0-10V (14)
Ground (0V DC) (15)
Alarm Output (16)
(8) Right Output 0-10V / 0-100µA
(7) Left Output 0-10V / 0-100µA
(6) Ground
(5) Ground PE
(12) - 2.5V Supply (excitation)
(11) Left - Input ± 250mV (signal)
(10) Right + Input ± 250mV (signal)
(9) + 2.5V Supply (excitation)
16 15 14 13 12 11 10 9
135678
CAL. R
ZERO R
CAL. L
ZERO L
ALARM
ALARM
POWER
Load Cell Ampliers
M
3200
LTR
0
0
123456
y
ON
See Conguration section
(p.4) for optional settings.
Dip Switch Factory Settings
Standard conductor colors for
Montalvo load cell cables
4 pin 6 pin 3 pin
# Color # Color # Color
1 Brown (BN) 1 White (WH) a White (WH)
2 White (WH) 2 Black (BK) b Black (BK)
3 Blue (BU) 3 Red (RD) c Red (RD)
4 Black (BK) 4 Green (GN) NA
GND 15
5
GND/PE
6
GND
UI14
500Ω
Total Output (process)
4-20mA/0-20mA/
0-10V
4
5
6
13
16
Total Output (meter)
0 to 10V/
0 to 100μA
Alarm Output
24VDC ±15%
Load > 650Ω
8
7
Gain
x1
Gain
x1-60
Gain
x10
Gain
x1-60
Gain
x10
Load Cell Right
+Signal
± 250mV
Load Cell Left
- Signal
± 250mV
Right Output
0 to 10V/
0 to 100μA
Left Output
0 to 10V/
0 to 100μA
1
3
2
Alarm
Level
+100%
+100%
- 100%
+100%
- 100%
Zero
Zero
CAL. R
CAL. L
10
11
100kΩ
100kΩ
100kΩ
PSU
Voltage Switch
V+
V
-
+24V
Power
9 1
5
3
12
Load Cell
Supply
+2.5VDC
Load Cell
Supply
- 2.5VDC
L (supply)
N (supply)
GND

EST . 1947
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
p. 11
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
WIRING
(15) Ground (0V DC)
(12) - 2.5V Supply (excitation)
(11) Left - Input ± 250mV (signal)
(10) Right + Input ± 250mV (signal)
(9) + 2.5V Supply (excitation)
BK WH BN
or
RD
16 15 14 13 12 11 10 9
BK WH BN
or
RD
Left
Load Cell
Right
Load Cell
(15) Ground (0V DC)
(12) - 2.5V Supply (excitation)
(11) Left - Input ± 250mV (signal)
(10) Right + Input ± 250mV (signal)
(9) + 2.5V Supply (excitation)
BK WH BN
or
RD
BL
or
GN
16 15 14 13 12 11 10 9
Left
Load Cell
BK WH BN
or
RD
BL
or
GN
Right
Load Cell
(15) Ground (0V DC)
(12) - 2.5V Supply (excitation)
(11) Left - Input ± 250mV (signal)
(10) Right + Input ± 250mV (signal)
(9) + 2.5V Supply (excitation)
16 15 14 13 12 11 10 9
BK WH BN
or
RD
BL
or
GN
Load Cell
M3200LTR Wiring for Montalvo ES / U/ DRD / DRC** Series Load Cells
(Dual Half Bridge Semiconductor Strain Gauge Load Cells)
M3200LTR Wiring for Montalvo DRC** Series Load Cells
(Dual Full Bridge Semiconductor Strain Gauge Load Cells)
M3200LTR Wiring for Montalvo N/ X/ TSR / N-Micro Series Load Cells
(Single Full Bridge Semiconductor Strain Gauge Load Cells)
** DRC load cells are standard as Full bridge with Half bridge as an option.

EST . 1947
p. 12
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
WIRING
M3300 Overview
M3300 Block Diagram
Line L (1)
Line N (3)
Total Output 0-10V / 0-100µA (13)
Total Output 4-20mA / 0-20mA / 0-10V (14)
Ground (0V DC) (15)
Alarm Output (16)
(8) No Connection
(7) No Connection
(6) Ground
(5) Ground PE
(12) - 5VDC Supply (excitation)
(11) - Input ± 30mVDC
(10) + Input ± 30mVDC
(9) + 5VDC Supply (excitation)
16 15 14 13 12 11 10 9
135678
123456
y
ON
See Conguration section
(p.4) for optional settings.
Dip Switch Factory Settings
Standard conductor colors for
Montalvo load cell cables
4 pin 6 pin 3 pin
# Color # Color # Color
1 Brown (BN) 1 White (WH) a White (WH)
2 White (WH) 2 Black (BK) b Black (BK)
3 Blue (BU) 3 Red (RD) c Red (RD)
4 Black (BK) 4 Green (GN) NA
GND 15
5
GND/PE
6
GND
UI14
500Ω
Total Output (process)
4-20mA/0-20mA/
0-10V
4
5
6
13
16
Total Output (meter)
0 to 10V/
0 to 100μA
Alarm Output
24VDC ±15%
Load > 650Ω
Load Cell
+Signal
± 30mV
Load Cell
- Signal
± 30mV
3
Alarm
Level
+100%
Gain
x1-60
Gain
x80
+200%
- 200%
Zero
CAL.
10
11
100kΩ
PSU
Voltage Switch
V+
V
-
+24V
Power
9 1
5
3
12
Load Cell
Supply
+5VDC
Load Cell
Supply
- 5VDC
L (supply)
N (supply)
GND

EST . 1947
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
p. 13
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
(15) Ground (0V DC)
(12) - 5V Supply (excitation)
(11) - Input ± 30mV (signal)
(10) + Input ± 30mV (signal)
(9) + 5V Supply (excitation)
BK WH BN
or
RD
BL
or
GN
16 15 14 13 12 11 10 9
Left
Load Cell
BK WH BN
or
RD
BL
or
GN
Right
Load Cell
(15) Ground (0V DC)
(12) - 5V Supply (excitation)
(11) - Input ± 30mV (signal)
(10) + Input ± 30mV (signal)
(9) + 5V Supply (excitation)
16 15 14 13 12 11 10 9
BK WH BN
or
RD
BL
or
GN
Load Cell
(15) Ground (0V DC)
(12) - 5V Supply (excitation)
(11) - Input ± 30mV (signal)
(10) + Input ± 30mV (signal)
(9) + 5V Supply (excitation)
BK WH BN
or
RD
BL
or
GN
16 15 14 13 12 11 10 9
Left
Load Cell
BK WH BN
or
RD
BL
or
GN
Right
Load Cell
WIRING
M3300 Wiring for Montalvo LP Series Load Cells (6-12 o’clock connectors)
(Dual Full Bridge Foil Gauge Load Cells)
M3300 Wiring for Montalvo LP Series Load Cells (3-9 o’clock connectors)
(Dual Full Bridge Foil Gauge Load Cells)
M3300 Single Full Bridge Foil Gauge Load Cell

EST . 1947
p. 14
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
WIRING
M3324 Overview
M3324 Block Diagram
No Connection (1)
+24V DC Supply (2)
No Connection (3)
Ground Supply (0V DC) (4)
Total Output 0-10V / 0-100µA (13)
Total Output 4-20mA / 0-20mA / 0-10V (14)
Ground (0V DC) (15)
Alarm Output (16)
(8) No Connection
(7) No Connection
(6) Ground (0V DC)
(5) Ground PE
(12) - 5VDC Supply (excitation)
(11) - Input ± 30mVDC
(10) + Input ± 30mVDC
(9) + 5VDC Supply (excitation)
16 15 14 13 12 11 10 9
124V 0V
3PE 678
3324
24V 0V
123456
y
ON
See Conguration section
(p.4) for optional settings.
Dip Switch Factory Settings
Standard conductor colors for
Montalvo load cell cables
4 pin 6 pin 3 pin
# Color # Color # Color
1 Brown (BN) 1 White (WH) a White (WH)
2 White (WH) 2 Black (BK) b Black (BK)
3 Blue (BU) 3 Red (RD) c Red (RD)
4 Black (BK) 4 Green (GN) NA
GND 15
PE
GND/PE
6
GND
UI14
500Ω
Total Output (process)
4-20mA/0-20mA/
0-10V
4
5
6
13
16
Total Output (meter)
0 to 10V/
0 to 100μA
Alarm Output
24VDC ±15%
Load > 650Ω
Load Cell
+Signal
± 30mV
Load Cell
- Signal
± 30mV
3
Alarm
Level
+100%
Gain
x1-60
Gain
x80
+200%
- 200%
Zero
CAL.
10
11
100kΩ
DC
DC
+15V
- 15V
Power
Load Cell
Supply
+5VDC
Load Cell
Supply
- 5VDC
9
12
24V
24VDC ±15% (supply)
0V
0VDC (supply)

EST . 1947
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
p. 15
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
WIRING
M3324 Wiring for Montalvo LP Series Load Cells (6-12 o’clock connectors)
(Dual Full Bridge Foil Gauge Load Cells)
(15) Ground (0V DC)
(12) - 5V Supply (excitation)
(11) - Input ± 30mV (signal)
(10) + Input ± 30mV (signal)
(9) + 5V Supply (excitation)
BK WH BN
or
RD
BL
or
GN
16 15 14 13 12 11 10 9
Left
Load Cell
BK WH BN
or
RD
BL
or
GN
Right
Load Cell
(15) Ground (0V DC)
(12) - 5V Supply (excitation)
(11) - Input ± 30mV (signal)
(10) + Input ± 30mV (signal)
(9) + 5V Supply (excitation)
16 15 14 13 12 11 10 9
BK WH BN
or
RD
BL
or
GN
Load Cell
(15) Ground (0V DC)
(12) - 5V Supply (excitation)
(11) - Input ± 30mV (signal)
(10) + Input ± 30mV (signal)
(9) + 5V Supply (excitation)
BK WH BN
or
RD
BL
or
GN
16 15 14 13 12 11 10 9
Left
Load Cell
BK WH BN
or
RD
BL
or
GN
Right
Load Cell
M3324 Wiring for Montalvo LP Series Load Cells (3-9 o’clock connectors)
(Dual Full Bridge Foil Gauge Load Cells)
M3324 Single Full Bridge Foil Gauge Load Cell

EST . 1947
p. 16
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
CALIBRATION
Zero Point
1Connect power and load cells to M Series Amplier as described in
WIRING section.
2With web removed and no tension on load cell roller, adjust ZERO
potentiometer using a voltmeter:
Note: A remote meter can be used to zero the M series. Connect
meter (see WIRING section) and adjust ZERO potentiometer until
meter reads 0.
Calibration
3Select a weight that is at least 25% of the full scale tension range expected
to be present on the load cells.
4Suspend the weight from a non-elastic rope or strap 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
tension sensing roller that will be used when the machine is running.
Known
Weight
Rope fastened
to this roller
Load Cell
Roller
Model Output Potentiometer Connections Reading
3200/3224
3300/3324 Total ZERO 13 (+) 15 (-) 0V
3200LTR Left ZERO L 7 (+) 6 (-) 0V
Right ZERO R 8 (+) 6 (-) 0V

EST . 1947
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
p. 17
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
CALIBRATION
5Rotate all of the rollers the rope wraps around in the direction of the weight.
This is done to counteract friction forces on the rope to the rollers, which
may cause inaccurate readings.
6Adjust potentiometer(s) using a voltmeter:
*
Output voltage value = V. Calculated by the following formula:
V = (calibration weight/CAL. full-scale value) x 10 volts
Note: A remote meter can be used to calibrate the M Series.
Connect meter (see WIRING section) and adjust CAL. potentiometer
until meter displays calibration weight.
7Remove weight. Output should return to 0. If not, repeat steps 2, 5 and
` 6 while verifying calibration weight. Repeat as necessary until 0 and
calibrated weights are accurate.
Alarm Level Adjustment
Model Output Potentiometer Connections Reading
3200/3224
3300/3324 Total CAL. 13 (+) 15 (-)
*
3200LTR Left CAL. L 7 (+) 6 (-)
*
Right CAL. R 8 (+) 6 (-)
*
Apply a weight to the tension sensing roller equal to the value that
should activate the alarm. Adjust the ALARM potentiometer until the
ALARM LED lights up. Alarm output will be high (+24 V) whenever
tension drops below the alarm level.

EST . 1947
p. 18
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
SPECIFICATIONS
Supply Voltage M3200 / M3200LTR / M3300 Selectable 115V/230V AC ± 10% (IEC 204-1)
Supply Voltage M3224 / M3324 24VDC±15% (IEC60204-1)
Supply Frequency 48-62 Hz
Overvoltage Category II (IEC 664)
Maximum Internal Fuse Size 5x20mm 115V/80mA(T) / 230V/50mA(T)
Material Degree of Inammability UL94V0
Maximum Power Consumption 3.5 VA
Maximum Supply Fuse Size 10 A
Testing Voltage - Primary to Secondary 3.75 kV for 1 Minute
EMC-Immunity EN 50082-2, Industry
EMC-Emission EN 50081-1, Trade and Light Industry
Degree of Protection IP20 (IEC 529)
Installation Environment (Pollution Degree) 2
Connections Removable Terminal Blocks
Weight 0.14 lb (0.3 kg)
Dimension (L x W x H) 2.95 x 1.77 x 4.21 (75 x 45 x 107 mm)
Mounting DIN Rail 35 mm
Mounting Orientation Not Critical
Ambient Temperature Range: Operating 14°F to 122°F (-10°C to 50°C)
Ambient Temperature Range: Storing 14°F to 176°F (-10°C to 80°C)
Humidity < 95% Non-Condensing
Load Cell Input M3200 / M2300LTR / M3224 ±250mVDC
Load Cell Input M3300 / M3324 ±30mVDC
Input Impedance 100 K
Load Cell Supply M3200 / M2300LTR / M3224 ±2.5 VDC ±2%
Load Cell Supply M3300 / M3324 ±5 VDC ±2%
Meter Output, Selectable 0 to 100A / 0 to 10V, Max. Load 5 mA
Process Output, Selectable 0 to 20 mA / 4 to 20 mA / 0 to 10V
Process Output Load (Current) ≤ 500 
Process Output Load (Voltage) > 5000 
Zero Range Adj. M3200 / M2300LTR / M3224 50% of Load Cell Rating [Max. 250 mVDC (±125 mV)]
Zero Range Adjustment M3300 / M3324 300% of Load Cell Rating [Max. 60 mVDC (±30 mV)]
Gain Adjustment M3200 / M2300LTR / M3224 11 to 510
Gain Adjustment M3300 / M3324 90 to 4400
Accuracy Better Than 1%
Alarm Output Voltage 24 VDC ±15%
Alarm Output Load > 650 

EST . 1947
M Series Amplier
__ ___________________________________________________________________________________
Technical Manual
p. 19
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
NOTES

EST . 1947
p. 20
www.montalvo.com / Technical details subject to change without notice. Mamp-technical manual-US-09 © Montalvo
__ ___________________________________________________________________________________M Series Amplier
Technical Manual
Montalvo USA
(Corporate Headquarters)
Gorham, Maine 04038 USA
Tel: [phone]
Tel: [phone]
[email protected]
Montalvo Europe ApS
Horsens, Denmark
Tel: [phone]
[email protected]
Montalvo Deutschland
Hannover, Germany
Tel: [phone]
[email protected]
Montalvo (Shanghai) Trading Co., Ltd.
Shanghai, China
Tel: [phone]
[email protected]