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User manual M3
Pt100 3-/4-wire -200.0°C…850.0°C / -328.0°C…1562.0°F
Technical features:
• red display from -19999…99999 digits (optional green, orange, blue or tricolour display)
• installation depth: 120 mm without plug-in screw terminal
• multi voltage power supply unit 100-240 VAC, alternatively 10-40 VDC galv. isolated
• adjustment via factory setting or directly on the sensor signal
• min/max-memory with adjustable permanent display
• display flashing at threshold value exceedance / undercut
• flexible alarm system with adjustable delay times
• brightness control via parameter or front keys
• programming interlock via access code
• protection class IP65 at the front
• plug-in screw terminal
• optional: 1 or 2 relay outputs
• optional: 1 independently scalable analog output
• optional: interface RS232 or RS485
• accessories: pc-based configuration-kit PM-TOOL with CD & USB adapter
• on demand: devices for working temperatures of -25°C…60°C
M3_3CGB.pdf update: 30.03.2015
96x24
Identification
STANDARD TYPES
Pt100 3-/4-wire
Housing size: 96x24 mm
ORDER NUMBER
M3-3TR5B.010C.S70BD
M3-3TR5B.010C.W70BD
Options – breakdown of order code:
M 3- 3 T R 5 B. 0 1 0 C. W 7 2 B D
Standard type M-line
Installation depth mm
144 mm (154 mm),
incl. plug-in terminal
Dimension
D physical unit
3
Housing size
B96xH24xD120 mm
1
Type of display
Temperature
T
Switching points
0 without
1 1 relay output
2 2 relay outputs
Protection class
1 without keypad, operation via
Display colours
Blue
Green
Red
Orange
B
G
R
Y
Number of digits
5-digit
5
programming plug on the back side
7 IP65 / plug-in terminal
Voltage supply
S 100-240 VAC
W 10-40 VDC galv. insulated
Measuring input
C Pt100
Digit height
14 mm
Version
B B
B
Analog output
0 without
Digital input
without
Interface RS232
0
3
X 0-10 VDC, 0/4-20 mA
Interface RS485
4
Temperature devices
1 P t100 3‐/4‐wire
Please state physical unit by order, e.g. °C
Contents
1.
Brief descirption
2
2.
Assembly
2
3.
Electrical connection
3
4.
Function description and operation
4
4.1. Programming software PM-TOOL
5
Setting up the device
6
5.1. Switching on
6
5.2. Standard parameterisation (flat operation level)
6
5.
Value assignment for the triggering of the signal input
5.3. Programming interlock „RUN“
8
Activation/Deactivation of the programming interlock or change into professional
or flat operation level
5.4. Extended parametersation (professional operation level)
5.4.1. Signal input parameters „INP“
9
9
Value assignment for the triggering of the signal input
5.4.2. General device parameters „FCT“
11
Superior device functions like min/max permanent, brightness control, as well as the control of the
keyboard layout
5.4.3. Safety parameters „COD“
13
Assignment of user and master code to lock or to receive access to defined parameter such as
analog output and alarms, etc.
5.4.4. Serial parameters „ser“
14
Parameter for interface definition
5.4.5. Analog parameters „Out“
15
Analog outpur functions
5.4.6. Relay functions „rel“
17
Parameter for setpoint definition
5.4.7. Alarm parameters „AL1…AL4“
18
Actuator and dependencies of the alarms
6.
Reset to factory settings
20
Reset parameters onto the delivery state
7.
Alarms / Relays
21
Functional principle of the switching outputs
8.
Interfaces
22
Connection RS232 and RS485
9.
Technical data
23
10.
Safety advices
25
11.
Error elimination
26
1
2. Assembly
1. Brief description
1. Brief description
The panel meter instrument M3-3C is a 5-digit device for Pt100 sensors 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.
Selectable 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
Please read the Safety advices on page 25 before installation and keep this user manual for future reference.
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1.
2.
3.
After removing the fixing elements, insert the device.
Check the seal to make sure it fits securely.
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!
2
3. Electrical connection
3. Electrical connection
Type M3-3VT5B.010C.S70BD supply 100-240 VAC 50/60Hz, DC ±10%
Type M3-3VC5B.010C.W70BD supply 10-40 VDC galv. isolated, 18-30 VAC 50/60Hz
3
4. Function description and operation
4. Function description and operation
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 “prof“ under menu item RUN.
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 „uloc„ under menu item RUN.
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“ 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
changes into operating mode, if no further key operation is done within the next 10 seconds.
Level
Key
Description
Change to parameterisation level and deposited values.
Menu-level
Keys for up and down navigation in the menu level.
Change into operation mode.
To confirm the changes made at the parameterization level.
Parameterisationlevel
Adjustment of the value / the setting.
Change into menu level or break-off in value input.
Change to menu level.
Menu-group-level
Keys for up and down navigation in the menu group level.
Change into operation mode or back into menu level.
4
4. Function description and operation
Function chart:
4.1 Parameterisation software PM-TOOL:
Part 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.
5
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. Before, check once again
that all electrical connections are correct.
Starting sequence
For 1 second during the switching-on process, the segment test (8 8 8 8 8) 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 TYPE.
Menu level
Parameterisation level
Selection of the input signal, tYPE:
Default: 4l
Available as measuring input types are 3- and 4-wire-Pt100 signals. Confirm the selection with
[P] and the display switches back to menu level.
Type of temperature metering UNIT:
Default: °c
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, DOt:
Default: 0.0
The decimal point on the display and the physical unit can be changed with [▲] [▼]. If e.g.
temperature measurement in °C is selected, then choose between 0°C and 0.0°C in the
parameterisation level. Confirm with [P], the display then switches back to the menu level
again.
Impedance matching, offs:
Default: 0.0
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.
6
5. Setting up the device
Menu level
Parameterisation level
Setting up the display time, SEC:
Default: 1.0
then
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.
Selection of analog output, Out.rA:
Default: 4-20
Three output signals are available: 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, Out.En:
Default: 850.0
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 highest digit. After the
last digit, the device changes back into menu level.
Setting up the initial value of the analog output, Out.OF:
Default: -200.0
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 highest digit. After the
last digit, the device changes back into menu level.
Threshold values / Limits, LI-1:
Default: 200.0
This value defines the threshold, that activates/deactivates an alarm.
Hysteresis for limit values, HY-1:
Default: 0.0
The delayed reaction of the alarm is the difference to the threshold value, which is defined by
the hysteresis.
7
5. Setting up the device
Menu level
Parameterisation level
Function for threshold value undercut / exceedance, Fu-1:
Default: high
A limit value undercut is selected with Louu (for LOW = lower limit value), a limit value
exceedance with High (for HIGH = higher limit value). If e.g. limit value 1 is on a threshold level
of 100 and allocated with function High, an alarm is activated by reaching of the threshold level.
If the threshold value was allocated to Low, an alarm will be activated by undercutting the
threshold value, as long as the hysteresis is zero.
The same applies to LI-2 !
User code (4-digit number-combination, free available), U.CodE:
Default: 0000
If this code was set (>0000), all parameters are locked for the user, if LOC has been selected
before under menu item run. By pressing [P] for 3 seconds in operation mode, the display
shows COde. The U.Code needs to be entered to get to the reduced number of parameter sets.
The code has to be entered befor each parameterisation, until the A.Code (Master code) unlocks
all parameters again.
Master code (4-digit number-combination, free available), A.CodE:
Default: 1234
All parameters can be unlocked with this code, after LOC has been activated under menu item
run. By pressing [P] for 3 seconds in operation mode, the display shows COde and enables the
user to reach all parameters by entering the A.codE. Under run the parameterisation can be
activated permanently by selecting ULOC or ProF, thus at an anew pushing of [P] in operation
mode, the code needs not to be entered again.
5.3. Programming interlock „RUN“
Activation / deactivation of the programming lock or completion of the standard
parameterisation with change into menu group level (complete function range), run:
Default: uloc
With the navigation keys [▲] [▼], choose between the deactivated key lock Uloc (works
setting) and the activated key lock Loc, or the change into the menu group level ProF. Confirm
the selection with [P]. After this, the display confirms the settings with "- - - - -", and
automatically switches to operating mode. If Loc was selected, the keyboard is locked. To get
back into the menu level, press [P] for 3 seconds in operating mode. Now enter the CODE (works
setting 1 2 3 4) that appears using [▲] [▼] plus [P] to unlock the keyboard. FAIL appears if the
input is wrong. To parameterise further functions ProF 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 InP is shown in the display and thus confirms
the change into the extended parameterisation. It stays activated as long as ULOC or LOC is
entered in menu group RUN.
8
5. Setting up the device
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, tYPE:
Default: 4l
Available as measuring input types are 3- and 4-wire-Pt100 signals. Confirm the selection with
[P] and the display switches back to menu level.
Type of temperature metering, UNIT:
Default: °c
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, DOt:
Default: 0.0
The decimal point on the display and the physical unit can be changed with [▲] [▼]. If e.g.
temperature measurement in °C is selected, then choose between 0°C and 0.0°C in the
parameterisation level. Confirm with [P], the display then switches back to the menu level
again.
Impedance matching, offs:
Default: 0.0
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.
9
5. Setting up the device
Menu level
Parameterisation level
Setting up the display time, SEC:
Default: 1.0
then
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.
Device undercut, dI.Und:
Default: -i9999
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, dI.OUE:
Default: 99999
With this function the display overflow (
_____
) can be defined on a definite value.
Input variable of process value, SIG.in:
Default: a.meas
With this parameter, the device can be controlled via the analog input signals a.meas = 0-20 mA,
4-20 mA or 0-10 VDC or via the digital signals of the interface M.bus = RS232/RS485 (Modbus
protocol). With [P] the selection is confirmed and the device changes into menu level.
Back to menu group level, rEt:
With [P] the selection is confirmed and the device changes into menu group level „–INP–“.
10
5. Setting up the device
5.4.2. General device parameters
Menu group level
Menu level
Menu level
Parameterisation level
Display time, DISEC:
Default: 01.0
then
The display is set up with [▲] [▼]. Thereby it switches up to 1 second in increments of 0.1
seconds 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, round:
Default: 00001
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, dISPL:
Default: actua
With this function the current measuring value or the min/max-value can be allocated to the
display. With [P] the selection is confirmed and the device changes into menu level.
Brightness control, Light:
Default: 15
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.
11
5. Setting up the device
Menu level
Parameterisation level
Display flashing, FLASH:
Default: no
A display flashing can be added as additional alarm function either to single or to a combination
of off-limit condition. With no, no flashing is allocated.
Assignment (deposit) of key functions, tASt:
Default: no
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 was activated with EHtr, 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 LI.12 or LI.34 is choosen, the values of the
threshold can be changed during operation without disturbing the operating procedure. Under
Light the brightness can be changed during operation. If no is selected, the navigation keys are
without any function in the operation mode.
Back to menu group level, rEt:
With [P] the selection is confirmed and the device changes into menu group level „–fct–“.
12
5. Setting up the device
5.4.3. Safety parameters
Menu group level
Menu level
Menu level
Parameterisation level
User code U.Code:
Default: 0000
Via this code reduced sets of parameters can be set free. A change of the U.CodE can be done
via the correct input of the A.CodE (master code).
Master code, A.Code:
Default: 1234
By entering A.CodE the device will be unlocked and all parameters are released.
Release/lock analog output parameter, Out.LE:
Default: all
Analog output parameter can be locked or released for the user:
- En-oF: the initial or final value can be changed in operation mode
- Out.EO: the output signal can be changed from e.g. 0-20 mA to 4-20 mA or 0-10 VDC
- ALL: analog output parameters are release
- no: all analog output parameters are locked
Release/lock alarm parameters, AL.LEU:
Default: all
This parameter describes the user release/user lock of the alarm:
- LIMIt: here only the range of value of the threshold values 1-4 can be changed
- ALrM.L: here the range of value and the alarm trigger can be changed
- ALL: all alarm parameters are released
- no: all alarm parameters are locked
13
5. Setting up the device
Menu level
Parameterisation level
Back to menu group level, rEt:
With [P] the selection is confirmed and the device changes into menu group level „–COD–“.
5.4.4. Serial parameters
Menu group level
Menu level
Menu level
Parameterisation level
Device address, ADDR:
Default: 001
The device address is adjusted from the smallest to the largest digit with the navigation keys
[▲] [▼] and confirmed digit per digit with [P]. A device address up to max. 250 is available.
Interface data: Baudrate 9600 bit/s, 8 databyte, 1 stopbit, no parity (8n1).
ModBus operating modes, b.mode:
Default: ascii
There are two different types of operating modes: ASCII and rtu. Modbus transfers no binary
cycle, but the ASCII-Code. Thus it is directly readable, however the data throughput is smaller
in comparison to the RTU. Modbus RTU (RTU = Remote Terminal Unit) transfers the data in
binary-coded. This leads to a good data troughput, even though the data cannot be evaluated
directly, as they first need to be transfered into a readable format.
Timeout, tIout:
Default: 000
The monitoring of the data transfer is parameterised in seconds up to max. 100 seconds; there
is no monitoring with an input of 000. The timeout is adjusted from the smallest to the largest
digit with the navigation keys [▲] [▼] and confirmed digit per digit with [P]. After the last digit
the device changes back into menu level.
Back to menu group level, rEt:
With [P] the selection is confirmed and the device changes into menu group level „–SER–“.
14
5. Setting up the device
5.4.5. Analog output parameters
Menu group level
Menu level
Menu level
Parameterisation level
Selection reference of analog output, OutPt:
Default: actua
The analog output signal can refer to different functions, in detail these are the current
measurand, the min-value or the max-value. With [P] the selection is confirmed and the device
changes into menu level.
Selection analog output, Out.rA:
Default: 4-20
Three output signals are available 0-10 VDC, 0-20 mA and 4-20 mA. Select the desired signal
with this function.
Setting the final value of the analog output, Out.En:
Default: 850.0
The final value is adjusted from the smallest to the highest digit with [▲] [▼] and confirmed
digit per digit with [P]. A minus sign can only be parameterised on the highest digit. After the
last digit the device changes back into menu level.
Setting the initial value of the analog output, Out.OF:
Default: -200.0
The initial value is adjusted from the smallest to the highest digit with [▲] [▼] and confirmed
digit per digit with [P]. A minus sign can only be parameterised on the highest digit. After the
last digit the device changes back into menu level.
15
5. Setting up the device
Menu level
Parameterisation level
Overflow behaviour, O.FLoU:
Default: edge
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 EdGE, that means the analog
output runs on the set limits e.g. 4 and 20 mA, or to.OFF (input value smaller than initial value,
analog output switches on e.g. 4 mA), to.End (higher than final value, analog output switches on
e.g. 20 mA). If to.MIn or to.MAX is set, the analog output switches on the smallest or highest
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, rEt:
With [P] the selection is confirmed and the device changes into menu group level „–out–“.
16
5. Setting up the device
5.4.6. Relay functions
Menu group level
Menu level
Menu level
Parameterisation level
Alarm relay 1, rEL-1:
The same applies for relays 2
Default: al-1
….
….
Each setpoint (optional) can be linked up via 4 alarms (by default). This can either be inserted
at activated alarms Al-1/4 or deactivated alarms Aln1/4. If LOGIC is selected, logical links are
available in the menu level Log-1 and Com-1. Access to these two menu levels is via LOGic, at all
other selected functions, these two parameters are overleaped. Via On/OFF 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, Log-1
Default: or
Here, the switching behaviour of the relay is defined via a logic link, the following schema
describes these functions with inclusion of AL-1 and AL-2. This parameter is only possible if LOgic
was selected under REl-1.
A1 v A2
As soon as a selected alarm is activated, the relay
operates. Equates to operating current principle.
A1 v A2 = A1 Λ A2
The relay operates only, if no selected alarm is
active. Equates to quiescent current principle.
A1 Λ a2
The relay operates only, if all selected alarms are
active.
A1 Λ A2 = A1 v A2
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.
Alarms for relay 1, CoM-1:
Default: a.i
….
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.
17
5. Setting up the device
Menu level
Parameterisation level
Back to menu group level, rEt:
With [P] the selection is confirmed and the device changes into menu group level „–rel–“.
5.4.7. Alarm parameters
Menu group level
Menu level
Menu level
Parameterisation level
Dependency alarm 1, ALrM.1:
Default: actua
The dependency of alarm 1 can be related to special functions, in detail these are the current
measuring value, the min-value, the max-value. With [P] the selection is confirmed and the
device changes into menu level.
Example:
By using the maximum value Alarm.1 = Max.va in combination with a threshold monitoring Fu-1 =
High, an alarm confirmation can be realised. Use the navigationkeys, the fourth key or the digital
input for confirmation.
Threshold values / limit values, LI-1:
Default: 200.0
The limit value defines the threshold, that activates/deactivates an alarm.
Hysteresis for threshold values, HY-1:
Default: 0.0
The delayed reaction of the alarm is the difference to the threshold value, which is defined by
the hysteresis.
18
5. Setting up the device
Menu level
Parameterisation level
Function for threshold value undercut / exceedance, Fu-1:
Default: high
A limit value undercut is selected with Louu (for LOW = lower limit value), a limit value
exceedance with High (for HIGH = higher limit value). If e.g. limit value 1 is on a threshold level
of 100 and allocated with function High, an alarm is activated by reaching of the threshold level.
If the threshold value was allocated to Low, an alarm will be activated by undercutting the
threshold value, as long as the hysteresis is zero.
Switching-on delay, ton-1:
Default: 000
For limit value 1 one can preset a delayed switching-on of 0-100 seconds.
Switching-off delay, toF-1:
Default: 000
For limit value 1 one can preset a delayed switching-off of 0-100 seconds.
Back to menu group level, rEt:
With [P] the selection is confirmed and the device changes into menu group level „–Al1–“.
The same applies for Al2 to al8.
19
6. Reset to factory settings
Programming interlock, run:
Menu group level
Description see page 8, menu level run
6. Reset to default values
To return the unit to a defined basic state, a reset can be carried out to the default values.
The following procedure should be used:
• Switch off the power supply
• Press button [P]
• Switch on voltage supply and press [P]-button until „- - - - -“ is shown in the display.
With reset, the default values of the program table are loaded and used for subsequent operation. This sets
the unit back to the state in which it was supplied.
Caution! All application-related data are lost.
20
7. Alarms / Relays
7. Alarms / Relays
This device has 8 virtual alarms that can monitor one limit value in regard of an undercut or exceedance.
Each alarm can be allocated to an optional relay output S1-S2; furthermore alarms can be controlled by
events like e.g. min/max-value.
Function principle of alarms / relays
Alarm / Relay x
deactivated, instantaneous value or an allocation via the min/max-value
Switching threshold
Threshold / limit value of the change-over
Hysteresis
Broadness of the window between the switching thresholds
Working principle
Operating current / quiescent current
Operating current
By operating current the alarm S1-S2 is
off below the threshold and on on
reaching the threshold.
Quiescent current
By quiescent current the alarm S1-S2 is
on below the threshold and switched off
on reaching the threshold.
Switching-on delay
The switching-on delay is activated via
an alarm and e.g. switched 10 seconds
after reaching the switching threshold, a
short-term exceedance of the switching
value does not cause an alarm,
respectively does not cause a switching
operation of the relay. The switching-off
delay operates in the same way, keeps
the alarm / the relay switched longer for
the parameterised time.
21
8. Interfaces
8. Interfaces
The interface RS485 is connected via a screened data line with twisted wires (Twisted-Pair). On each end
of the bus segment a termination of the bus lines needs to be connected. This is neccessary to ensure a
secure data transfer to the bus. For this a resistance (120 Ohm) is interposed between the lines Data B (+)
and Data A (–).
22
9. Technical data
9. Technical data
Housing
Dimensions
96x24x120 mm (BxHxD)
96x24x144 (154) mm (BxHxD) incl. plug-in terminal
Panel cut-out
92.0+0.8 x 22.2+0.3 mm
Wall thickness
up to 10 mm
Fixing
screw elements
Material
PC polycarbonate, black, UL94V-0
Sealing material
EPDM, 65 Shore, black
Protection class
standard IP65 (front), IP00 (back side)
Weight
approx. 200 g
Connection
plug-in terminal; wire cross-section up to 2.5 mm2
Display
Digit height
14 mm
Segment colour
red (optional green, orange or blue)
Range of display
-19999 to 99999
Setpoint
one LED per setpoint
Overflow
horizontal bars at the top
Underflow
horizontal bars at the bottom
Display time
0.1 to 10.0 seconds
Input
Measuring range
Measuring error
Digit
Pt100 3-/4-wire
-200.0°C…850.0°C
0.1 % of measuring range
±1
Pt100 3-/4-wire
-328.0°F…1562.0°F
0.1 % of measuring range
±1
Accuracy
Drift of temperature
100 ppm / K
Measuring time
0.1…10.0 seconds
Measuring principle
U/F-conversion
Resolution
0.1°C or 0.1°F
23
9. Technical data
Output
Analog output
0/4-20 mA / burden ≤500 Ohm, 0-10 VDC / burden ≥10 kOhm, 16 bit
Switching outputs
Relay with change-over contact
Switching cycles
250 VAC / 5 AAC; 30 VDC / 5 ADC
0.5 x 105 at contact load
0.5 x 106 mechanically
Division according to DIN EN 50178 /
Characteristics according to DIN EN 60255
Interface
Protocol
Modbus with ASCII or RTU-protocol
RS232
9.600 Baud, no parity, 8 Databit, 1 Stopbit,
cable length max. 3 m
RS485
9.600 Baud, no parity, 8 Databit, 1 Stopbit,
cable length max. 1000 m
Power supply
100-240 VAC 50/60 Hz / DC ±10% (max. 10 VA)
10-40 VDC galv. isolated, 18-30 VAC 50/60 Hz (max. 10 VA)
Memory
EEPROM
Data life
≥ 100 years / 25°C
Ambient conditions
Working temperature
0°C…50°C
Storing temperature
-20°C…80°C
Wheatering resistance
relative humidity 0-80% on years average without dew
EMV
EN 61326
CE-sign
Conformity according to directive 2004/108/EG
Safety standard
According to low voltage directive 2006/95/EG
EN 61010; EN 60664-1
24
10. Safety advices
10. Safety advices
Please read the following safety advices and the assembly chapter 2 before installation and keep
it for future reference.
Proper use
The M3-3C-device is designed for the evaluation and display of sensor signals.
Danger!
Careless use or improper operation can result in
personal injury and/or cause damage to the equipment.
Control of the device
The panel meters are checked before dispatch and sent out in perfect condition. Should there be
any visible damage, we recommend close examination of the packaging. Please inform the
supplier immediately of any damage.
Installation
The M3-3C-device must be installed by a suitably qualified specialist (e.g. with a qualification in
industrial electronics).
Notes on installation
• There must be no magnetic or electric fields in the vicinity of the device, e.g. due to
transformers, mobile phones or electrostatic discharge.
• The fuse rating of the supply voltage should not exceed a value of 6A N.B. fuse.
• Do not install inductive consumers (relays, solenoid valves etc.) near the device and
suppress any interference with the aid of RC spark extinguishing combinations or free-wheeling
diodes.
• Keep input, output and supply lines separate from one another and do not lay them parallel with
each other. Position “go” and “return lines” next to one another. Where possible use twisted pair.
So, you receive best measuring results.
• Screen off and twist sensor lines. Do not lay current-carrying lines in the vicinity. Connect the
screening on one side on a suitable potential equaliser (normally signal ground).
• The device is not suitable for installation in areas where there is a risk of explosion.
• Any electrical connection deviating from the connection diagram can endanger human life
and/or can destroy the equipment.
• The terminal area of the devices is part of the service. Here electrostatic discharge needs to be
avoided. Attention! High voltages can cause dangerous body currents.
• Galvanic isolated potentials within one complex need to be placed on an appropriate point
(normally earth or machines ground). So, a lower disturbance sensibility against impacted
energy can be reached and dangerous potentials, that can occur on long lines or due to faulty
wiring, can be avoided.
25
11. Error elimination
11. Error elimination
Error description
Measures
1.
The unit permanently indicates
overflow.
• The input has a very high measurement, check
the measuring circuit.
• The input is open
2.
The unit permanently shows
underflow.
• The input has a very low measurement, check
the measuring circuit.
• The input is open
3.
The word "HELP " lights up in the
7-segment display.
• The unit has found an error in the configuration
memory. Perform a reset on the default values
and reconfigure the unit according to your
application.
4.
Program numbers for parameterising
of the input are not accessible.
• Programming lock is activated
• Enter correct code
5.
"Err1" lights up in the 7-segment
display
• Please contact the manufacturer if errors of
this kind occur.
6.
The device does not react as
expected.
• If you are not sure that the device has been
parameterised before, then follow the steps as
written in chapter 6 and set it back to its
delivery status.
M3_3CGB.pdf
26
update: 30.03.2015
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