montwill M3 Series User manual

Technical features:
• red display from -19999…99999 digits (optional green, orange or blue display)
• minimal installation depth: 90 mm without plug-in terminal
• adjustment via factory default or directly on the sensor signal
• min/max-value recording
• display flashing at threshold exceedance / undercut
• Hold-function
• permanent min/max-value recording
•volume measuring (totaliser)
• mathematical functions like reciprocal value, square root, square, rounding
• programming interlock via access code
• protection class IP65 at the front
• plug-in screw terminal
• optional: 2 PhotoMos outputs
• optional: sensor supply or analog output
• optional: digital output
• accessories: pc-based configuration kit PM-TOOL incl. CD & USB adapter for devices
without keypad, for a simple adjustment of standard devices
User manual M3
Thermocouple type K, B, S, N, E, T, R, L, J
48x24
M3_7TGB.pdf update: 28.05.2020

Identification
STANDARD-TYPES ORDER NUMBER
Thermocouple
Housing size: 48x24 mm
M3-7TR5A.040X.S70xD
M3-7TR5A.040X.770xD
Please state physical unit by order.
Options – breakdown of order code:
M 3- 7 T R 5 B. 0 4 0 X. 7 7 2 x D
Standard type M line Dimension
D physical unit
Installation depth
109 mm, 3 Version
incl. plug-in terminal
x internal version
Housing size
48x24x90 mm (BxHxD) 7 Switching points
0 no switching point
Display type 22 PhotoMos-outputs
Temperature T
Protection class
Display colour 1 without keypad,
Blue B operation via PM-TOOL
Green G 7 IP65 / plug-in terminal
Red R
Orange Y Supply voltage
7 24 VDC galv. isolated
Number of digits S 85-265 VAC
5-digit 5
Measuring input
Digit height X Type K, B, S, N, E, T, R, L, J
10 mm A
Analog output
Digital input 0 without
without 0 X 0-10 VDC, 0/4-20 mA
1 digital input I
Temperature devices
4Thermocouple

1
Contents
1. Brief description 2
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 signal input
5.3. Programming interlock 9
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) 10
5.4.1. Signal input parameter „ “ 10
Value assigment for triggering of the signal input
5.4.2. General device parameter „ “ 12
Superior device functions like min/max permanent, brightness control, as well as the control of the
keyboard configuration
5.4.3. Safety parameter „ “ 14
Assignment of user and master code for locking or access to certain
parameters like e.g. analog output and alarms, etc.
5.4.4. Analog output parameter „ “ 15
Analog output functions
5.4.5. Relay functions „ “ 17
Parameter for the definition of the setpoints
5.4.6. Alarm parameter „ “ 19
Activator and dependencies of the alarms
6. Reset to factory settings 21
Reset of the parameter to the factory default settings
7. Alarms / Relays 22
Function principle of the switching outputs
8. Technical data 23
9. Safety advices 25
10. Error elimination 26

1. Brief description
2
1. Brief description
The panel meter instrument M3-3T is a 5-digit device for Thermocouple and a visual threshold value
monitoring via the display. The configuration happens via four keys at the front or by the optional PC
software PM-TOOL. The integrated programming interlock prevents unrequested chnages of parameters
and can be unlocked again with an individual code. Optional available is one analog output for further
evaluating in the unit.
With help of the two galvanic isolated setpoints (optional), free adjustable limit values can be controlled and
reported to a superior master display.
The electrical connection is done via plug-in terminals on the back side.
Selcetable functions like e.g. the recall of the min/max-value, a direct threshold value regulation during
operation mode, complete the modern device concept.
2. Assembly
Change signs of the physical unit before assembly via a channel at the side of the front!
The change can only be done from the outside before assembly!
Sealing
48,0
24,0
3,0
Gap for physical unit
101 to 109 mm
Installation depth incl. plug-in terminal
for standard devices 109 mm
(with extended functional range 101 mm)
Please read the Safety advices on page 25 before installation and keep this user manual for future reference.
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!
2. Assembly

3. Electrical connection
3
3. Electrical connection
Type M3-7TR5A.040X.S70xD
supply of 100-240 VAC
Type M3-7TR5A.040X.770xD
supply of 24 VDC

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 by pushing both navigation keys
at the same time.
Parameterisation
level
To confirm the changes made at the parameterization level.
Adjustment of the value / the setting.
Change into menu level or stop of the value input, by pushing
both navigation keys at the same time.
Menu group level
Change to menu level
Keys for up and down navigation in the menu group level.
Change into operation mode or return into menu level, by
pushing both navigation keys at the same time.
4. Function and operation description
Operation
The operation is divided into three different levels.
Menu level (delivery status)
The menu level is for the standard settings of the device. Only menu items which are sufficient 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. Pressing the [O]-key („zero-key“) 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
Function chart:
4.1 Parameterisation software PM-TOOL:
Included in the delivery of the PM-TOOL are the software on CD and an 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 saved 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!

6
5. Setting up the device
Menu level Parameterisation level
Selection of the input signal,
Default:
Available are 9 types of thermocouple as input options (L, J, K, B, S, N, E, T, R).
Confirm the selection with [P] and the display switches back to menu level.
Type of temperature metering,
Default:
The temperature can be displayed in °C or in °F. Confirm the selection with [P] and the
display switches back to menu level.
Setting the decimal point, :
Default:
The decimal point on the display and the physical unit can be changed with [▲] [▼]. If
e.g. temperature measurement in °C is selected, then select between 0°C and 0.0°C in
the parameterisation level. Confirm with [P], the display then switches back to the
menu level again.
Setting the measuring range start/offset value, :
Default:
The value for the sensor calibration is selectable from the smallest to the highest digit
with [▲][▼] and confirmed with [P]. After the last digit the display switches back to the
menu level again. The value calibration for a temperature measurement in °C can be
adjusted between -20.0 and +20.0 and in °F between -36.0 and +36.0. If the type of
the measurement is changed later, then the value is rounded.
5.1. Switching on
Once the installation is complete, start the device by applying the voltage supply. Before, 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 .
5. Setting up the device

7
5. Setting up the device
Menu level Parameterisation level
Setting 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 to 10.0 seconds. Confirm the selection by pressing
the [P] button. The display then switches back to the menu level again.
Selection of analog output,
Default:
Available are 3 output signals: 0-10 VDC, 0-20 mA and 4-20 mA. With this function,
the demanded signal is selected.
Setting up the final value of the analog output,
Default:
The final value is adjusted from the smallest digit to the highest digit with [▲] [▼] and
digit by digit confirmed with [P]. A minus sign can only be parameterised on the
leftmost digit. After the last digit, the device changes back into menu level.
Setting up the initial value of the analog output,
Default:
The initial value is adjusted from the smallest digit to the highest digit with [▲] [▼]
and digit by digit confirmed with [P]. A minus sign can only be parameterised on the
leftmost digit. After the last digit, the device changes back into menu level.
Threshold values / limits,
Default:
This value defines the threshold, that activates/deactivates an alarm.
Hysteresis for limit values,
Default:
The delayed reaction of the alarm is the difference to the threshold value, which is
defined by the hysteresis.
then

8
5. Setting up the device
Menu level Parameterisation level
Function for threshold value undercut / exceedance,
Default:
A limit value undercut is selected with (for LOW = lower limit value), a limit value
exceedance with (for HIGH = higher limit value). If e.g. limit value 1 is on a
threshold level of 100 and allocated with function , an alarm is activated by
reaching the threshold level. If the threshold value was allocated to an alarm will
be activated by undercutting the threshold value, as long as the hysteresis is zero.
Threshold values / limits,
Default:
This value defines the threshold, that activates/deactivates an alarm.
Hysteresis for threshold values,
Default:
The delayed reaction of the alarm is the difference to the threshold value, which is
defined by the hysteresis.
Function if display falls below / exceeds limit value,
Default:
A limit value undercut is selected with (for LOW = lower limit value), a limit value
exceedance with (for HIGH = higher limit value). If e.g. limit value 1 is on a
threshold level of 100 and allocated with function , an alarm is activated by
reaching the threshold level. If the threshold value was allocated to an alarm will
be activated by undercutting the threshold value, as long as the hysteresis is zero.
User code (4-digit number-combination, free available), :
Default:
If this code was set (>0000), all parameters are locked for the user, if has been
selected before under menu item . By pressing [P] for 3 seconds in operation
mode, the display shows . The needs to be entered to get to the reduced
number of parameter sets. The code has to be entered befor each parameterisation,
until the (Master code) unlocks all parameters again.

9
5. Setting up the device
Menu level Parameterisation level
Master code (4-digit number-combination, free available), :
Default:
All parameters can be released with this code, after has been activated under
menu item . By pressing [P] for 3 seconds in operation mode, the display shows
and enables the user to reach all parametes by entering the . Under the
parametrisation can be activated permanently by selecting or , thus at an
anew pushing of [P] in operation mode, the code needs not to be entered again.
5.3. Programming interlock „ “
Activation / deactivation of the programming lock or completion of the standard
parameterization with change into menu group level (complete function range),
Default:
Choose between the deactivated key lock (works setting) and the activated key
lock , or the change into 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 parameterize
further functions needs to be set. The device confirms this setting with „ „
and changes automatically in 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 activated as long as or
is entered in menu group .

5. Setting up the device
10
5.4. Extended parametersation (Professional operation level)
Menu group level
Menu level
5.4.1. Signal input parameters
Menu level Parameterisation level
Selection of the input signal,
Default:
Available are 9 types of thermocouple as input options (L, J, K, B, S, N, E, T, R).
Confirm the selection with [P] and the display switches back to menu level.
Type of temperature metering
Default:
The temperature can be displayed in °C or in °F. Confirm the selection with [P] and the
display switches back to menu level.
Setting the decimal point, :
Default:
The decimal point on the display and the physical unit can be changed with [▲] [▼]. If
e.g. temperature measurement in °C is selected, then select between 0°C and 0.0°C in
the parameterisation level. Confirm with [P], the display then switches back to the
menu level again.
Setting the measuring range start/offset value, :
Default:
The value for the sensor calibration is selectable from the smallest to the highest digit
with [▲][▼] and confirmed with [P]. After the last digit the display switches back to the
menu level again. The value calibration for a temperature measurement in °C can be
adjusted between -20.0 and +20.0 and in °F between -36.0 and +36.0. If the type of
the measurement is changed later, then the value is rounded.

5. Setting up the device
11
Menu level Parameterisation level
Setting 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 to 10.0 seconds. Confirm the selection by pressing
the [P] button. The display then switches back to the menu level again.
Display underflow,
Default:
With this function the device undercut ( ) can be defined on a definite value.
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 .
then

5. Setting up the device
12
5.4.2. General device parameters
Menu level Parameterisation level
Display time,
Default:
The display is set up with [▲] [▼]. Thereby it switches until 1 second in increments of
0.1 seconds and until 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
increments 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.
Display,
Default:
With this function the current measurand, min/max-value or the process-controlled
Hold-value can be allocated to the display. With [P] the selection is confirmed and the
device changes into menu 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.
Menu group level
Menu level
then

5. Setting up the device
13
Menu level Parameterisation level
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 safed 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. If is selected, the navigation
keys are without function in the operation mode.
Special function digital input,
Default:
For operating mode, special functions can be realised via the digital input. This
function is actuated by a voltage signal on the terminal of the digital input. With
the device is tared to zero and saved permanently as offset. The display
acknowledges this with in the display. switches into the offset value and
can be changed via the navigation keys. Via the current value of the totaliser can
be displayed for approx. 7 seconds, after this the device switches back on the
parameterised display value. If is deposited, the totaliser can be set back by
switching on the digital input, the device acknowledges this with in the display.
deletes the min/max-memory. 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 .
shows the measurand for approx. 7 seconds, after this the device switches back on
the parameterised display value. At , an output can be set and therewith e.g.
a setpoint adjustment can be done. If is selected, the [O]-key is without any
function in the operation mode.
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
Menu level Parameterisation level
User code
Default:
Via this code, reduced sets of parameters can be released. A change of the can
be done via the correct input of the (master code).
Master code, :
Default:
By entering the device will be unlocked and all parameters are released.
Release/lock analog output parameters,
Default:
Analog output parameters can be locked or released for the user:
- the initial or final value can be changed in operation mode
- the output signal can be changed from e.g. 0-20 mA to 4-20 mA or 0-10 VDC
- analog output parameters are released
- all analog output parameters are locked
Release/lock alarm parameters,
Default:
This parameter describes the user release/user lock of the alarm:
: here only the range of value of the threshold values 1-4 can be changed
- : here the range of value and the alarm trigger can be changed
- all alarm parameters are released
- all alarm parameters are locked
Menu group level
5.4.3. Safety parameters
Menu level

5. Setting up the device
15
Menu level Parameterisation level
Back to menu group level, :
With [P] the selection is confirmed and the device changes into menu group
level .
Menu group level
5.4.4. Analog output parameters for analog output
Menu level
Menu level Parameterisation level
Selection reference of analog output,
Default:
The analog output signal can refer to different functions, in detail this are the current
measuring value, min-value or max-value. If is selected the signal of the analog
output will be hold and processed just after deactivation of . With [P] the
selection is confirmed and the device changes into menu level.
Selection analog output, :
Default:
Available are 3 output signals: 0-10 VDC, 0-20 mA and 4-20 mA. With this function
the demanded signal can be selected.
Setting up the final value of the analog output, :
Default:
The final value can be adjusted from the smallest to the highest digit with [▲] [▼].
Confirm each digit with [P]. A minus sign can only be parameterized on the leftmost
digit. After the last digit, the display switches back to the menu level.

5. Setting up the device
16
Menu level Parameterisation level
Setting up the initial value of the analog output, :
Default:
The initial value can be adjusted from the smallest to the highest digit with [▲] [▼].
Confirm each digit with [P]. A minus sign can only be parameterized on the leftmost
digit. After the last digit, the display switches back to the menu level.
Overflow behaviour, :
Default:
To recognise and evaluate faulty signals, e.g. by a controller, the overflow behaviour
of the analog output can be defined. As overflow can be seen either , that means
the analog output runs on the set limits e.g. 4 and 20 mA, or (input value smaller
than initial value, analog output switches on e.g. 4 mA), (higher than final value,
analog output switches on e.g. 20 mA). If or is set, the analog output
switches on the least significant or leftmost possible binary value. This means that
values of e.g. 0 mA, 0 VDC or values higher than 20 mA or 10 VDC can be reached.
With [P] the selection is confirmed and the device changes into menu level.
Back to menu group level, :
With [P] the selection is confirmed and the device changes into menu group
level .

5. Setting up the device
17
Menu group level
5.4.5. Relay functions
Menu level
Menu level Parameterisation level
Alarm relay 1,
Default:
Each setpoint (optional) can be linked up via 4 alarms (by default). This can either be
inserted at activated alarms or deactivated alarms If was selected,
logical links are available in the menu level and . Access to these two menu
levels is via , at all other selected functions, these two parameters are over-
leaped. Via the setpoints can be activated/deactivated, in this case the output
and the setpoint display are set/not set on the front of the device. With [P] the
selection is confirmed and the device changes into menu level.
Logic relay 1,
Default:
The switching behaviour of the relay is defined via a logic link, the following schema
describes these functions with inclusion of and :
A1 vA2 As soon as a selected alarm is activated, the
relay operates. Equates to operating current
principle.
A1 vA2 = A1 ΛA2 The relay operates only, if no selected alarm is
active. Equates to quiescent current principle.
A1 Λa2 The relay operates only, if all selected alarms
are active.
A1 ΛA2 = A1 vA2 As soon as a selected alarm is not activated, the
relay operates.
With [P] the selection is confirmed and the device changes into menu level.
____ _ _
____ _ _
…. ….

5. Setting up the device
18
Menu level Parameterisation level
Alarms for relay 1,
Default:
The allocation of the alarms to relay 1 happens via this parameter, one alarm or a
group of alarms can be chosen. With [P] the selection is confirmed and the device
changes into menu level.
Alarm relay 2,
Default:
Each setpoint (optional) can be linked up via 4 alarms (by default). This can either be
inserted at activated alarms or deactivated alarms If was selected,
logical links are available in the menu level and . Access to these two menu
levels is via , at all other selected functions, these two parameters are over-
leaped. Via the setpoints can be activated/deactivated, in this case the output
and the setpoint display are set/not set on the front of the device. With [P] the
selection is confirmed and the device changes into menu level.
Logic relay 2,
Default:
The switching behaviour of the relay is defined via a logic link, the following schema
describes these functions with inclusion of and :
A1 vA2 As soon as a selected alarm is activated, the
relay operates. Equates to operating current
principle.
A1 vA2 = A1 ΛA2 The relay operates only, if no selected alarm is
active. Equates to quiescent current principle.
A1 Λa2 The relay operates only, if all selected alarms
are active.
A1 ΛA2 = A1 vA2 As soon as a selected alarm is not activated, the
relay operates.
With [P] the selection is confirmed and the device changes into menu level.
____ _ _
____ _ _
….
…. ….