montwill M2 Series User manual

Technical features:
• red display of -19999…99999 Digits (optional: green, orange or blue display)
• minimal installation depth: 70 mm without plug-in screw terminal
• min/max-memory
• 30 additional adjustable supporting points
• display flashing at threshold value exceedance / threshold value undercut
• zero-key for triggering of hold, Tara or sensor alignment
• digital input for triggering of hold, Tara or sensor alignment
• permanent min/max-value recording
• sensor alignment with integrated switching output
• mathematic functions like reciprocal value, square root, squaring or rounding
• sliding average determination
• brightness control
• programming interlock via access code
• protection class IP65 at the front side
• plug-in screw terminal
• optional: 2 relay outputs
• accessories: PC-based configuration-kit PM-TOOL with CD & USB-adapter for devices
without keypad and for a simple adjustment of standard devices
User manual M2
Strain gauge amplifier with a calibration for 350 Ω melt pressure sensors
96x48
M2_1MGB.pdf update: 28.05.2020

Identification
STANDARD TYPES ORDER NUMBER
Weighing technology – strain gauges
Housing size: 96x48 mm
M2-1MR5B.020X.570xD
M2-1MR5B.020X.670xD
Please state physical unit by order, e.g. m/min.
Options – breakdown product key:
M 2- 1 M R 5 B. 0 2 0 X. 6 7 2 x D
Standard type M-line Dimension
D physical unit
Installation depth
89 mm, 2Version
incl.plug-in terminal x internal version
Housing size Switching points
96x48x70 mm (BxHxD) 1 0 no switching points
2 2 relay outputs
Display type
Strain gauge MProtection class
1 without keypad,
Display colour operation via PM-TOOL
Blue B 7 IP65 / plug-in terminal
Green G
Red RSupply voltage
Yellow Y 4 115 VAC
5 230 VAC
Number of digits 6 10-30 VDC galv. isolated
5-digit 5
Measuring input
Digit height X Strain gauges 1 - 3,3 mV
14 mm B
Analog output
Digital input 0 without
Standard 0
Bridge feeding
2 10 VDC / 20-40 mA
incl. digital input

Contents
1. Brief description 1
2. Assembly 2
3. Electrical connection 3
4. Functions and operation description 4
4.1. Programming software PM-TOOL 5
5. Setting up the device 6
5.1. Switching on 6
5.2. Standard parameterisation (flat operation level) 6
Value assigment for triggering of the singal input
5.3. Programming interlock 10
Activation/Deactivation of the programming interlock or change into the professional
level respectively back into the flat operation level
5.4. Extended parameterisation (professional operation level) 11
5.4.1. Signal input parameter „ “ 11
Value assigment for triggering of the singal input incl. linearisation
5.4.2. General device parameter „ “ 14
Higher device functions like Hold, Tara, min/max permanent, average determination,
brightness control, as well as the control of the digital input and the keyboard
configuration
5.4.3. Safety parameter „ “ 18
Assignment of user and master code for locking or access to certain parameters
like e.g. analog output and alarms, etc.
5.4.4. Relay functions „ “ 19
Parameter for the definition of the setpoints
5.4.5. Alarm parameter „ “ 22
Activator and dependencies of the alarms
6. Reset to factory settings 24
Reset of the parameter to the factory default settings
7. Alarms / Relays 25
Function principle of the switching outputs
8. Sensor alignment 27
Function diagram for sensors with existing trimming resistor
9. Technical data 28
10. Safety advices 30
11. Error elimination 31

1. Brief description
1
1. Brief description
The panel meter M2-1M is a 5-digit device for the connection to a 4-wire-measuring bridge
with calibration contact (80% alignment) and a visual threshold value monitoring via the
display. The configuration happens via four front keys or via the optional PC software PM-
TOOL. An integrated programming interlock prevents unrequested changes of the
parameters and can be unlocked again by an individual code. Optional the following
functions are available: a 10 V bridge feeding, a digital input for the triggering of Hold (Tara)
or the 80%-alignment and two optional galvanic isolated setpoints, by which free adjustable
threshold values can be controlled and reported to a superior master display.
The electrical connection is carried out on the back side via plug-in terminals.
Selectable functions like e.g. the request of the min/max-value, an average determination of
the measuring signals, a nominal preset respectively setpoint preset, a direct change of
threshold value in operation mode and additional measuring supporting points for
linearisation complete the modern device concept.

2. Assembly
2
2. Assembly
Please read the Safety advices on page 30 before installation and keep this user manual for
future reference.
Sealing
48,0
3,0
M2
Gap for physical unit
89,0
1. After removing the fixing elements, insert the device.
2. Check the seal to make sure it fits securely.
3. Click the fixing elements back into place and tighten the clamping screws by hand. Then
use a screwdriver to tighten them another half a turn.
CAUTION! The torque should not exceed 0.1 Nm!
The dimension symbols can be exchanged before installation via a channel on the side!

3. Electrical connection
3
3. Electrical connection
Type M2-1MR5B.020X.470xD supply of 115 VAC
Type M2-1MR5B.020X.570xD supply of 230 VAC
Type M2-1MR5B.020X.670xD supply of 10-30 VDC
+ + _ _
Shield
Cal
350
21 22 23 24 25 26
S1 S2
Relay 1 Relay 2
1 2 3 10 119
4 5 6 7 8
10-30 VDC
or
115 VAC
or
230 VAC
NL
_+
supply
supply
sense
sense
+
Digital
input
_
Options:

4. Function and operation description
4
4. Function and operation description
Level Key Description
Menu level
Change to parameterisation level and deposited values.
Keys for up and down navigation in the menu level.
Change into operation mode.
Parameter-
isation level
To confirm the changes made at the parameterization level.
Adjustment of the value / the setting.
Change into menu level or break-off in value input.
Menu group
level
Change to menu level.
Keys for up and down navigation in the menu group level.
Change into operation mode or back into menu level.
Operation
The operation is divided into three different levels.
Menu level (delivery status)
This level is for the standard settings of the device. Only menu items which are sufficent to
set the device into operation are displayed. To get into the professional level, run through the
menu level and parameterise under menu item .
Menu group level (complete function volume)
Suited for complex applications as e.g. linkage of alarms, setpoint treatment, totaliser function
etc. In this level, function groups which allow an extended parameterisation of the standard
settings are availabe. To leave the menu group level, run through this level and parameterise
under menu item .
Parameterisation level:
Parameter deposited in the menu item can here be parameterised. Functions, that can be
changed or adjusted, are always signalised by a flashing of the display. Settings that are
made in the parameterisation level are confirmed with [P] and thus saved. By pressing the
[O]-key (zero-key) it leads to a break-off of the value input and to a change into the menu
level. All adjustments are saved automatically by the device and it changes into operating
mode, if no further key operation is done within the next 10 seconds.

5
4. Function and operation description
4.1 Parameterisation software PM-TOOL:
Part of the PM-TOOL are the software on CD and one USB-cable with device adapter. The
connection happens via a 4-pole micromatch-plug on the back side of the device, to the PC-
side the connection happens via an USB plug.
System requirements: PC incl. USB interface
Software: Windows XP, Windows VISTA
With this tool the device configuration can be generated, omitted and safed on the PC. The
parameters can be changed via the easy to handle program surface, whereat the operating
mode and the possible selection options can be preset by the program.
CAUTION!
During parameterisation with connected measuring signal, make sure that the measuring
signal has no mass supply to the programming plug. The programming adapter is galvanic
not isolated and directly connected with the PC. Via polarity of the input signal, a current can
discharge via the adapter and destroy the device as well as other connected components!
Function chart:

6
5. Setting up the device
5. Setting up the device
5.1. Switching-on
Once the installation is complete, start the device by applying the voltage supply. First, check
once again that all electrical connections are correct.
Starting sequence
For 1 second during the switching-on process, the segment test ( ) is displayed
followed by an indication of the software type and, after that, also for 1 second the software
version. After the starting sequence, the device switches to operation/display mode.
5.2. Standard parameterisation: (Flat operation level)
To parameterise the display, press the [P]-key in operating mode for 1 second. The display
then changes to the menu level with the first menu item .
Menu level Parameterisation level
Selection of the input signal, :
Default:
There are 3 measuring input options available for known sensor sensibilities:
for 1mV/V, for 2mV/V and for 3.3mV/V. Each sensor is measured and
calibrated up to 4mV/V via . Confirm the selection with [P] and the display
switches back to menu level.
Setting the measuring range end value, :
Default:
Set the end value from the smallest to the highest digit with [▲] [▼] and confirm
each digit with [P]. A minus sign can only be parameterized on the highest value
digit. After the last digit, the display switches back to the menu level. If was
selected as input option, one can only select between and With , only
the previously set display value is taken over, and with , the device takes over
both the display value and the analogue input value.
Setting up the measuring range start/offset value, :
Default:
Enter the start/offset value from the smallest to the highest digit with [▲] [▼] and
confirm each digit with [P]. After the last digit the display switches back to the
menu level. If was selected as input option, one can only select between
and With , only the previously set display value is taken over, and with ,
the device takes over both the display value and the analogue input value.

7
5. Setting up the device
Menu level Parameterisation level
Setting the comma, decimal point,
Default:
The decimal point on the display can be moved with [▲] [▼] and confirmed with
[P]. The display then switches back to the menu level again.
Setting up the display time,
Default:
The display time is set with [▲] [▼]. The display moves up in increments of 0.1 up
to 1 second and in increments of 1.0 up to 10.0 seconds. Confirm the selection by
pressing the [P] button. The display then switches back to the menu level again.
Special function [O]-key,
Default:
For the operation mode, special functions can be deposited on the [O]-key.
Activate this function by pressing the key. With the display is tared to zero
und safed permanently as offset. The device acknowledges the correct taring with
in the display. switches into the offset value and can thus be changed
via the navigation keys [▲] [▼]. deletes the min/max memory. shows
the measurand, then the display changes onto the parameterised display value.
The same goes for , here the sliding average value is displayed. If has
been selected, the moment can be hold constant by pressing the [O]-key, and is
updated by releasing the key. Advice: is activated only, if was selected
under parameter . If (absolute value) was selected, the display shows
the values that have been measured since the voltage has been connected,
without consideration of a previous taring. With (temporarily Tara) the offset
is determined by rising shoulder of the digital input and kept only for the period of
the signal. Via a sensor calibration is done by pushing the zero-key, the flow
diagram is shown in chapter 4.4. At an output can be set and therewith
e.g. a switch of the metering point can be done. If is selected, the [O]-key is
without any function in the operation mode.
then
…

8
5. Setting up the device
Menu level Parameterisation level
Special function digital input,
Default:
The above shown parameters can be set for the operation mode onto the optional
digital input aswell. See function description .
Threshold values / limit values,
Default:
This limit value defines the threshold, that leads to an activation / deactivation of
the alarm.
Hysteresis for limit values,
Default:
The difference to the threshold value that causes the delay of the actuation of the
alarm, is defined by the hysteresis.
Function if display falls below / exceeds limit value,
Default:
The limit value undercut can be selected with (LOW = lower limit value) and
limit value exceedance can be selected with (HIGH = upper limit value). If e.g.
limit value 1 is on a switching threshold of 100 and occupied with function , the
alarm will be activated by reaching the threshold. If the limit value is allocated to
, an alarm will be activated by undercut of the threshold.
…

9
5. Setting up the device
Menu level Parameterisation level
Threshold values / limit values,
Default:
This limit value defines the threshold, that leads to an activation / deactivation of
the alarm.
Hysteresis for threshold values,
Default:
The difference to the threshold value that causes the delay of the actuation of the
alarm, is defined by the hysteresis.
Function if display falls below / exceeds limit value,
Default:
The limit value undercut can be selected with (LOW = lower limit value) and
limit value exceedance can be selected with (HIGH = upper limit value). If e.g.
limit value 1 is on a switching threshold of 100 and occupied with function , the
alarm will be activated by reaching the threshold. If the limit value is allocated to
, an alarm will be activated by undercut of the threshold.
User code (4-digit number-combination, free available), :
Default:
If this code is set (> ), all parameters are locked for the user, if has been
selected under menu item . By pressing [P] for approx. 3 seconds in operation
mode, the message is shown in the display. Enter the preset to get
access to the set of parameters which are unlocked for the user. The code needs
to be entered bevor each try of parameterisation, as long as (Master code)
all parameters are unlocked again.

10
5. Setting up the device
Menu level Parameterisation level
Master code (4-digit number-combination free available), :
Default:
After has been activated under menu item , this code can be used for
unlocking all parameters. By pressing [P] for approx. 3 seconds in operation
mode, the message is shown in the display and offer the user access to all
parameters by entering . While leaving this parameterisation it can be
unlocked permanently under by selecting or . So, at an anew
pressing of [P] in operating mode, an anew entering of the code is not needed.
5.3. Programming interlock
Activation / Deactivation of the programming interlock or completion of the
standard parameterisation with change into menu group level (complete
function volume),
Default:
Choose between the deactivated key lock (works setting), the activated key
lock , or the menu group level with the navigation keys [▲] [▼]. Confirm
the selection with [P]. After this, the display confirms the settings with " ", and
automatically switches to operating mode. If was selected, the keyboard is
locked. To get back into the menu level, press [P] for 3 seconds in operating
mode. Now enter the (works setting ) that appears using [▲] [▼] plus [P]
to unlock the keyboard. appears if the input is wrong.
To parameterise further functions, needs to be set. The device confirms this
setting with „ „ and changes automatically into operation mode. By pressing
[P] for approx. 3 seconds in operation mode, the first menu group is shown in
the display and thus confirms the change into the extended parameterisation. It
stays as long activated as is entered in menu group , thus the display is
set back in standard parameterisation again.

5. Setting up the device
11
5.4. Extended parameterisation (Professional operation level)
5.4.1. Signal input parameters
Menu group level
Menu level
Menu level Parameterisation level
Selection of the input signal, :
Default:
There are 3 measuring input options available for known sensor sensibilities:
for 1mV/V, for 2mV/V and for 3,3mV/V. Each sensor is measured and
calibrated up to 4mV/V via . Confirm the selection with [P] and the display
switches back to menu level.
Setting the measuring range end value, :
Default:
Set the end value from the smallest to the highest digit with [▲] [▼] and confirm
each digit with [P]. A minus sign can only be parameterized on the highest value
digit. After the last digit, the display switches back to the menu level. If was
selected as input option, one can only select between and
With , only the previously set display value is taken over, and with , the
device takes over both the display value and the analogue input value.
Setting up the measuring range start/offset value, :
Default:
Enter the start/offset value from the smallest to the highest digit with [▲] [▼] and
confirm each digit with [P]. After the last digit the display switches back to the
menu level. If was selected as input option, one can only select between
and With , only the previously set display value is taken over, and with ,
the device takes over both the display value and the analogue input value.

5. Setting up the device
12
Menu level Parameterisation level
Setting up the display time, :
Default:
The display time is set with [▲] [▼]. The display moves up in increments of 0.1
sec up to 1 sec and in increments of 1.0 sec up to 10.0 sec. Confirm the selection
by pressing the [P] button. The display then switches back to the menu level
again.
Rescaling the measuring input values, :
Default:
With this function, you can rescale the input value of e.g. 1.1 mV (works setting)
without applying a measuring signal.
Rescaling the measuring input values, :
Default:
With this function, you can rescale the input value of e.g. 0.1 mV (works setting)
without applying a measuring signal.
Setting up the tare/offset value, :
Default:
The given value is added to the linearized value. In this way, the characteristic line
can be shifted by the selected amount.
Setting up the balance point,
Default:
The balance point is preset to 80%. Assume an 80% detuning while switching the
alignment relay during an automatic sensor alignment. This value can be freely
adjusted.
then

13
5. Setting up the device
Menu level Parameterisation level
Number of additional setpoints,
Default:
30 additional setpoints can be defined to the initial value and final value, so linear
sensor values are not linearised. Only activated setpoint parameters are
displayed.
Display values for setpoints,
Here, setpoints are defined according to their value. At the sensor calibration, like
at final value/offset, one is asked at the end if a calibration shall be activated.
Analog values for setpoints,
The setpoints are always preset according to the selected input signal mA/V. The
demanded analog values can be freely adjusted in ascending order.
Device undercut,
Default:
With this function the device undercut ( ) can be defined on a definite
value. Exception is input type 4-20 mA, it already shows undercut at a signal <1
mA, so a sensor failure is marked.
Display overflow,
Default:
With this function the display overflow ( ) can be defined on a definite value.
Back to menu group level,
With [P] the selection is confirmed and the device changes into menu group level
.

5. Setting up the device
14
5.4.2. General device parameters
Menu level Parameterisation level
Display time,
Default:
The display time is set up with [▲] [▼]. Thereby you switch up to 1 second in
increments of 0.1 and up to 10.0 seconds in increments of 1.0. With [P] the
selection is confirmed and the device changes into menu level.
Rounding of display values,
Default:
This function is for instable display values, where the display value is changed in
steps of 1, 5, 10 or 50. This does not affect the resolution of the optional outputs.
With [P] the selection is confirmed and the device changes into menu level.
Arithmetics,
Default:
With this function the calculated value, not the measuring value, is shown in the
display. Calculation types
rEZIP = (Final value*Final value)/Display value
rAdiC = Root(Display value*Final value)
SqUAr = (Display value)²/Final value
Advice: The denominator of fractions should not be 0 because a division by 0 is
not possible. It creates an undefined state and the display goes into the overflow.
With , no calculation is deposited. With [P] the selection is confirmed and the
device changes into menu level.
Menu group level
Menu level
then
Reciprocal Root extraction Square

5. Setting up the device
15
Menu level Parameterisation level
Sliding average determination,
Default:
Under this menu item, the number of measurements that need to be averaged are
preset. The averaging time results from the product of measuring time and the
averaged measurements . With selection of in menu level the result is
shown in the display and evaluated when entered in the alarm .
Zero point slowdown,
Default:
At the zero point slowdown, a value range around the zero point can be preset, so
the display shows a zero. If e.g.10 is set, the display would show a zero in the
value range from -10 to +10; below continue with -11 and beyond with +11. The
maximum adjustable range of value is 99.
Display,
Default:
With this function the current measuring value, the min/max-value, the totaliser,
the process-controlled hold-value, the sliding average value, the constant value or
the difference between constant value and current value can be allocated to the
display. With [P] the selection is confirmed and the device changes into menu
level.
Brightness control, :
Default:
The brightness of the display can be adjusted in 16 levels from 00 = very dark to
15 = very bright via this parameter or alternatively via the navigation keys from the
outside. During the start of the device the level that is deposited under this
parameter will always be used, even though the brightness has been changed via
the navigation keys in the meantime.

5. Setting up the device
16
Menu level Parameterisation level
Display flashing,
Default:
A display flashing can be added as additional alarm function either to single or to a
combination of off-limit condition. With , no flashing is allocated.
Assignment (deposit) of key functions,
Default:
For the operation mode, special functions can be deposited on the navigation keys
[▲] [▼], in particular this function is made for devices in housing size 48x24mm
which do not have a 4th key ([O]-key). If the min/max-memory is activated with
, all measured min/max-values are saved during operation and can be
recalled via the navigation keys. The values get lost by restart of the device. If the
threshold value correction or is choosen, the values of the threshold can
be changed during operation without disturbing the operating procedure. With
the device is tared to zero and saved permanently as Offset. The device confirms
the correct taring by showing in the display. changes into the offset
value and can be changed via the navigation keys [▲] [▼]. The configuration of
deletes the min/max-memory. Under the measurand is shown, after
this the display returns to the parametrised display value. If (absolute value)
was selected, the display shows the value that has been measured since voltage
connection, without consideration of a previous taring. The adjustment of the
brightness of display is done via ; this adjustment is not saved and gets lost
by restart of the device. If is selected, the navigation keys are without any
function in the operation mode.

5. Setting up the device
17
Menu level Parameterisation level
Special function [O]-key,
Default:
For the operation mode, special functions can laid be on the [O]-key. Activate this
function by pushing the key. With the display is tared to zero and is saved
permanently as offset. The display confirms the correct taring by showing in
the display. switches into the offset value and can be change via the
navigation keys [▲] [▼]. deletes the min/max-memory. shows the
measuring value. Then the display switches to the parameterised display value.
The same goes for , here the sliding average value is displayed. At selected
the instant value is held by pushing the [O]-key and updated by releasing the
key. Advice: can only be activated if was selected under parameter
. If (absolute value) was selected, the display shows the values that
have been measured since the voltage has been connected, without consideration
of a previous taring. With (temporarily Tara) the offset is determined by
rising shoulder of the digital input and kept only for the period of the signal. Via
a sensor calibration is done by pushing the zero-key, the flow diagram is
shown in chapter 8. At an output can be set and therewith e.g. a switch of
the metering point can be done. If is selected, the [O]-key has no function in the
operation mode.
Special function digital input,
Default:
For the operation mode, the above shown parameters can be laid on the optional
digital input, too. Functions description see .
…
…