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.