ISOMAG ML 110 Specification sheet

OPERATING AND INSTALLATION MANUAL
CONVERTER
ML 110

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INTRODUCTION ......................................................................................... 3
SYMBOLS USED IN THIS MANUAL ............................................................... 3
TECHNICAL CHARACTERISTICS .................................................................. 4
INPUT OUTPUT ISOLATION ........................................................................ 4
ENVIRONMENTAL CONDITIONS OF USE ...................................................... 4
OPERATING TEMPERATURE ........................................................................ 4
ELECTRIC CHARACTERISTICS ..................................................................... 4
DIMENSIONS (PA6 HOUSING) .................................................................... 5
DIMENSIONS (ALUMINUM HOUSING) ......................................................... 6
ELECTRICAL CONNECTIONS ....................................................................... 7
GROUNDING INSTRUCTIONS ..................................................................... 7
INTERNAL VIEW OF PA6 CONVERTER ......................................................... 8
PA6 CONVERTER TO SENSOR ELECTRICAL CONNECTIONS .......................... 8
ALUMINUM CONVERTER TO SENSOR, ELECTRICAL CONNECTIONS .............. 9
DIGITAL INPUT ........................................................................................ 10
OPERATION ON INPUT ON OFF ................................................................ 10
OUTPUT WIRINGS ................................................................................... 11
Output on off 1250 Hz.............................................................................. 11
Output 4-20 mA ....................................................................................... 11
ACCESS TO THE CONVERTER KEYPAD ...................................................... 13
Key pad function ...................................................................................... 13
BLIND CONVERTERS ................................................................................ 13
ACCESSING THE CONVERTER FUNCTIONS AT START-UP (Power On) ......... 14
Example of visualized display pages at start-up .......................................... 14
FLOW RATE VISUALIZATION .................................................................... 15
CONVERTER FUNCTIONS SETTING ACCESS CODES ................................... 16
ACCESS TO THE CONFIGURATION MENU .................................................. 16
Factory preset access codes ...................................................................... 16
FUNCTIONS MENU ................................................................................... 19
FUNCTIONS DESCRIPTION ....................................................................... 22
ALARM MESSAGES, CAUSES AND CORRECTIVE ACTIONS ............................ 28
ANOMALY CODES ..................................................................................... 28
CONFORMITY DECLARATION .................................................................... 31
CONTENTS

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INTRODUCTION
SYMBOLS USED IN THIS MANUAL
This manual is integral part of the product. Read carefully the instructions contained in it
since it contains important indications for the safety of use and maintenance.
The technical information and the relative products of this manual could be modified
without any previous notice.
The flowmeter must be used for the use it has been built for. The improper use, possible
tampering of the instrument or parts of it and substitutions of any components not
original, makes the warranty to decay automatically. The manufacturer is considered
responsible only if instrument is used in its original configuration and setting, therefore
only qualified staff may open the cover.
The flowmeter makes measures of liquids with conductivity greater than 5 µS; it consists
of a converter (described in this manual) and a sensor, for which see the manual
provided.
When transporting, unpacking and handling the flowmeter, be careful and care.
In the case of protracted storage keep it in the original box in a dry place; do not place
more than 3 packs one above the other. It is possible storage and transport over a pallet
(in case of wooden crates do not place one above the other).
For the cleaning of the device use only a damp cloth, and for the maintenance repairs,
contact the service center (for details see the last page).
For device and packaging discarding, follow severely the local rules, laws and
regulations.
The reproduction of this manual and all the software supplied with the instrument is
strictly forbidden.
ATTENTION
WARNING
PRECAUTIONS
DANGER ELECTRIC SHOCK

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TECHNICAL CHARACTERISTICS
INPUT/OUTPUT ISOLATION
ENVIRONMENTAL CONDITIONS OF USE
OPERATING TEMPERATURE
Environmen al Temp.
Min. Max
°C °F °C °F
-10* -14* 50 122
 Input output insulated up to 500 V.
 The output 4-20 mA (optional) is electrically connected to the ON OFF outputs and
the output power supply (24 Vdc).
* In si ua ions of discon inuous use in cold environmen al empera ures, he
ins alla ion of an addi ional hea source may be necessary.
If the converter is supplied in compact version to the sensor, consider the operating
temperatures more restrictive; otherwise refer to the respective manuals.
ELECTRIC CHARACTERISTICS
Classifica ion of he conver er: class I, IP65 for PA6 housing, IP67 for aluminum
housing, installation category (overvoltage) III, rated pollution degree 2.
Power supply
versions
Power supply
vol age
Power supply
frequency Pmax Max curren
HV 100-240 V~ 44-66 Hz 5 VA 35 mA
LV 18-45 V 3 W 300 mA
18-45 V~ 44-66 Hz 5 VA
Voltage changes must not exceed ±10% of the nominal one.
 The converter can be installed internally or externally
 Altitude: from –200 to 2000 m (from -656 to 5602 feet)
 Humidity range: 0-85%, without condensation (only PA6 housing)
 Line voltage range: (see table of Electrical Characteristics above)

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DIMENSIONS (PA6 HOUSING)
COMPAC
T VERSION
SEPARATE VERSION
127
129
168
124
78
CABLE GLAND
COVER SCREW
IF2 CAP
TORQUES
To guarantee the housing’s IP degree the following torques are required:
 cover screws: 0,5 Nm
 cable glands: 4 Nm (in reference conditions)
 IF2 cap: 4 Nm

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DIMENSIONS (ALUMINUM HOUSING)
COMPACT VERSION
SEPARATE VERSION
193 169
160
78
CABLE GLAND
COVER SCREW
IF2 CAP
TORQUES
To guarantee the housing’s IP degree the following torques are required:
 cover screws: 0,8 Nm
 cable glands: 1,8 Nm (in reference conditions)
 IF2 cap: 2 Nm

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L(-)
N(+)
M3
M3
ELECTRICAL CONNECTIONS
ALWAYS ensure that the converter and the sensor are grounded (earthed) correctly. The
grounding of the sensor and converter ensures that the equipment and liquid are
equipotential.
 Before connecting the power supply, verify that the mains voltage are within the
limits indicated on data plate (see also page 4).
 For the connections use only approved conductors, with fire-proof properties, whose
section varies from 0,25 to 2,50 mm
2
, based on distance power; as well fix the
power supply wires with a additional fastening system located close to the terminal.
 The power supply line must be equipped with an external protection for overload
current (fuse or automatic line breaker).
 Provide nearness the converter a circuit breaker easily accessible for the operator
and clearly identified; whose symbols must conform to the electrical safety and local
electrical requirements.
 Ensure that the component complies with the requirements of the standard for
electrical safety distance.
 Check the materials chemical compatibility used in the connection security systems in
order to minimize the electrochemical corrosion. In the aluminum housing it should
avoid direct contact between the ground connection cable and the aluminum
housing. It is therefore recommended to connect the safety ground cable, by placing
it between the washer and the metal bracket on the related terminal or use an eyelet
terminal crimped on the ground protection cable.
 The sensor, hardwired inputs and outputs are connected to the converter through a
terminal block locate inside the converter.
 To locate the terminal block loosen the 4 screws on the front cover. When the front
cover is lifted, the terminal block is visible. The terminal block is the hardwire
connection of the converter to external equipment, including the sensor.
The following pages give informations on the terminal block numbering, and the
respective connecting of the sensor cables, and input outputs.
GROUNDING INSTRUCTIONS
CONVERTER POWER SUPPLY
PA6 HOUSING
ALUMINUM HOUSING

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INTERNAL VIEW OF PA6 CONVERTER
PA6 CONVERTER TO SENSOR ELECTRICAL CONNECTIONS
Power supply
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
Signalling LED:
See interpretation notes page 12
IF2 socket
Power supply
Keyboard
123456789
10
11121314151617181920
-
EC
+
SC B2 B1 SC
OUT2 OUT1 24V
24V
COILS
E1
E2
C
SC
4-20mA
ELECTRODES
EC
+
-
B
A
RS 485* INPUT
-
+
RS 485* : OPTIONAL, PROVIDED EXCLUSIVELY
BY THE MANUFACTURER
1
2
3
4
11
12
13
E1
E2
C
SH
SH
B1
B2
ALL SENSORS
SEPARATE VERSION
TERMINAL BLOCK
Sudden movements of to the
electrodes cable can cause noise
during measurement
Max cable leng h: 20 m

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Power supply
SENSOR cable
Shield
INTERNAL VIEW OF THE ALUMINUM CONVERTER
Signalling LED:
See interpretation notes page 12
IF2 socket
Keyboard
123456789
10
11121314151617181920
-
E C
+
SC B2 B1
OUT2 OUT1 24V
24V
COILS
E1
E2
C
4-20mA
ELECTRODES
E C
+
-
B
A
RS 485* INPUT
-
+
RS 485* : OPTIONAL, PROVIDED EXLUSIVELY BY THE MANUFACTURER
1
2
3
4
11
12
13
E1
E2
C
SH
SH
B1
B2
ALL SENSORS
SEPARATE VERSION
TERMINAL BLOCK M1
Sudden movements of the
electrodes cable can cause noise
during measurement
Max cable leng h: 20 m
ALUMINUM CONVERTER TO SENSOR, ELECTRICAL CONNECTIONS
Power supply

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0-1,5 V
3-40 V
AUTOCALIB. OFF
T
RESET
0-1,5 V
3-40 V
Tmin = 100ms
BLOCK
0-1,5 V
3-40 V
T
0-1,5 V
3-40 V
DIGITAL INPUT
OPERATION ON INPUT ON/OFF
3/40 Vdc (ON)
0/1,5 Vdc (OFF)
5 (+)
6 (-)
10 K
5
6
20
0
15
+24
10 K
Au o-calibra ion
Rese o alizers
Block o alizers
Block totalizers
Totalizers active
Necessary conditions for enabling the function
Necessary conditions for enabling the function
Necessary conditions for enabling the function
Tmin<T<1sec. = autocalibration
T > 1 sec. = Auto zero
POS. 5.7 ENABLED (Autozero calibration external
command)
POS. 5.1 to 5.4 ENABLED ( partial positive or reverse flow
totalizers reset enable).
POS. 5.6 ENABLED ( totalizers counting lock command)
POS. 5.8 ENABLED (range change)
Necessary conditions for enabling the function
Range change
Scale 2
Scale 1
10 Hz
20 Hz
50 Hz
80 Hz
150 Hz
220 ms
110 ms
45 ms
30 ms
15 ms
T must be > to Tmin
SAMPLE RATE Tmin SAMPLE RATE Tmin
Ex ernal power supply
In ernal power supply

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Before starting up the equipment please verify the following:
 Power supply voltage must correspond to that specified on the data tag
 Electric connections must be completed as described
 Ground (earthed) connections must be completed as specified
 The cover is closed to protect the supply terminal
Verify periodically:
 The integrity of the power supply cables, wiring and other connected electrical
parts
 The integrity of the housing converter (this must not have dents or other
damage that may compromises its hermetical sealing)
 The tightening of the sealing elements (cable glands, covers, etc.)
 The integrity of the front panel (display and keyboard), any damage may
compromise the equipment sealing
 The mechanical fixing of the converter to the pipe or wall stand
Ou pu 4-20 mA
24 V COMMON
+24 V INTERNAL
mA
9 (+)
10 (-)
I
4-20 mA OUT
Opto-insulated output
Maximum load: 1000 Ω
Maximum voltage without load: 27 Vdc
Refresh frequency is the same of the sample
frequency of the connected sensor
Protected against persistent over voltages to
maximum 30 Vdc
There is a Conver er load CHECK on he 4–20 mA ou pu ; o disable his
func ion se he value "mA Val. Faul " o 0 (Pos. 4.5, see page 15)
OUTPUT WIRINGS
CONVERTER START UP AND MAINTENANCE INSTRUCTIONS
Ou pu on/off 1250 Hz
Opto-insulated output with floating collector and
emitter terminals freely connectable
Maximum switching voltage: 40 Vdc
Maximum switching current: 100 mA
Maximum saturation voltage between collector
and emitter @100 mA: 1,2 V
Maximum switching frequency (load on the
collector or emitter, RL=470 Ω, VOUT=24 Vdc):
1250 Hz
Maximum reverse current bearable on the input
during and accidental polarity reversion (VEC):
100 mA
Insulation from other secondary circuits: 500
Vdc
16 (out1)
18 (out2)
17 (out1)
19 (out2)
43 V

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1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
LED INTERPRETATION
PERMANENT LIGHT: initialization
FLASHING LIGHT ( 1 sec.): normal function
FLASHING LIGHT (<1 sec.): alarm on
The LED signals the alarm status only if the display shows one of the
suitable visualization screens as shown on page 14
FLAG INTERPRETATION
FLAG DESCRIPTION
M Alarm max activated
m Alarm min activated
!
- Interruption coils circuit
- Segnal error
- Empty pipe
C Calibration running
S Simulation
Pulse output saturation (reduce
TIME PULSE )
At ‘Power on’ of the converter, the user will see the following display screen. In the top right
hand corner there may be a range of symbols. The symbols can be interpreted from the table
below. Interpretation of the flashing LED can be made from the LED interpretation table at the
bottom of this page.
DISPLAY FLAGS AND LED WARNING INTERPRETATION
LED
FLAGS

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For the converters without keyboard (blind
version), it can be accessed to the functions
through the optional serial cable IF2. Being the
housing closure dependent by the installer, the
IP degree may be compromised, so follow the
torques mentioned.
SHORT PRESSING (< 1 SECOND):
Enters leaves the selected function
Enables the main menu for the converter configuration
Cancels the selected function under progress
LONG PRESSING (> 1 SECOND):
Leaves the current function, in the Quick start or Main menus.
Enables the ‘EXECUTE?’ prompt in the Main menu functions, and total reset
request (when enabled) from the required function
Confirms the selected function
SHORT PRESSING (< 1 SECOND):
Moves the cursor rightwards on the input field
Accesses to the following subject in the Quick start or Main menus
Changes the display of the process data
LONG PRESSING (> 1 SECOND):
Moves the cursor leftwards on the input field
Accesses to the previous subject in the Quick start or Main menus
SHORT PRESSING (< 1 SECOND):
Increases the numeric figure or the parameter selected by the cursor
Accesses to the previous subject in the Quick start or Main menus
Batch start stop (when enabled)
LONG PRESSING (> 1 SECOND):
Decreases the numeric figure or the parameter selected by the cursor
Accesses to the next subject in the Quick start or Main menus
Key pad
f
unc ion
ACCESS TO THE CONVERTER KEYPAD
BLIND CONVERTERS
KEYPAD M3
The keypad is accessible by loosening the 4 cover screws and
opening the front cover of the converter. Three KEYS are set
aside of the M3 power supply terminal block, allowing the user
to change display visualizations and select functions. Ensure
that the power supply cover is closed.

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Active scale
Alarm on
Flow rate visualization
* Direct Reverse totalizer
visualization
Alternate visualization
* Direct totalizer
Reverse totalizer
Currency value
Alarm description
Sampling frequency
* Direct Reverse totalizer
Flow speed
Flow rate visualization
Flow rate visualization
Push keypad button
indicated to view the
Flow rate Alarm
If the user dwells on this screen the converter
will automatically scroll through the rest of the
initial visualization pages. If the user presses the
lower key on the keypad they will access the
Quick start menu. Pressing the middle key will
move to the next initial visualization screen.
Note: if the converter is not connected to the
sensor then an ‘Excitation Fail’ will be shown
Push keypad button
indicated to move
between pages
Push keypad button
indicated to move
between pages
ACCESSING THE CONVERTER FUNCTIONS AT START-UP (Power On)
Example of visualized display pages a s ar -up
The direct exposure of the converter to the solar rays, could damage the
liquid crystals display.
CURRENCY FUNTION ENABLE
* The maximum number shown on the totalizer is 999999999 regardless of the number of user selected
decimals (see page 19 Pos 2.3). Beyond this value the totalizers are reset to zero.
No e: The user will see he
screen displayed (lef ) a
power on of he conver er.
Use he keys on he keypad
as indica ed cen rally on
his page o move be ween
he screens shown (no all
shown).

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The ML 110 permits to show a 5 digit character display for flow rate units. This
mean the maximum flow rate value that can be represent on the display is 19999
(no matter the positioning of the decimal point) and the minimum is 0,025.
The converter’s calculation are based on the following formula:
-DN x DN x 0,008
The results of above calculation give the maximum flow rate a 10 m/s of speed
according to sensor’s diameter; the permitted units for the display are the measure
unit that, in reference to this calculated value, do not exceed the number 19999
(higher limi ) and 0,025 (lower limi )
Example for DN 100:
-Full scale value: 100 x 100 x 0,008 = 80 l s
-PERMITTED measure unit (example): l s (80,00) ; m
3
h (288,0) …
-NOT PERMITTED measure unit (example): cm
3
s (0,08) …
FLOW RATE VISUALIZATION

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CONVERTER FUNCTIONS SETTING ACCESS CODES
ACCESS TO THE CONFIGURATION MENU
The converter’s configuration menus can be accessed in two different ways:
 Through the “Quick s ar menu” it is possible to access directly a range of
principal functions for setting the scale reading and display characteristics of
the sensor (see function explanations pages 18-19)
 Through the “Main menu” it is possible to access functions with an access
code ≤ 2, which control more of the sensors monitoring, data processing and
output, as well further display options.
The following example (page 17) illustrates how to change some of the values in the
Fs1 display field of the Quick Start menu. The second example (page 18) illustrates
how to change a function parameter in the ‘Main menu’.
Functions in the converter’s ‘Main menu’ are
enabled by the access codes. The information
of this manual is related to all the functions
available with in the L2 level. All higher level
functions are reserved for servicing and not
available.
Descrip ion of he L2 access code
(menu “11 Internal data” pos. 11.1, see page
21)
 wi h code L2 = 00000 (only with this
code) you can disable the request of L2
code
* wi h L2 cus omized (freely chosen by
the user) you can program all the
functions up to L2 security level, entering
this code whenever you enter the Main
menu.
* ATTENTION: take careful note of the
customized code you have chosen, there is no
way for the user to retrieve or reset it if lost.
User defined access codes
Fac ory prese access
codes
The converter is delivered with the default
L2 (level 2) access code. The code if
required for accessing ‘Main menu’
functions from the ‘Quick start menu’ is:
11111
The first level configuration "Quick start
menu" can be automatically accessed with
out the access code by pressing the key
from one of the visualization pages at
start up (power on) of the converter. See
page 14 to see the screens from which the
Quick start menu can be accessed.

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EXAMPLE: “Quick s ar menu” func ion modifica ion. Full scale value 1 (Fs1)
from 4dm³/s o 5dm³/s.
Access the function “Fs1” by
pressing the button indicated for less
than 1 second
Push the key repeatedly and rapidly
to move the cursor to the value to
modify
Confirm the new value with a
short press of the key (less
than 1 second)
Long push to leave the quick
start menu and return to the
initial visualization page
Initial visualization
page
To increase the value press
the upper key for short
periods of less than 1 second,
to reduce the value press the
upper key for more than 1
second repeatedly
Enter in the “Quick start menu”
The keypad button to be pressed at
each step is indicated by the icon
symbol place on one of the three
keys of the keypad (here lower key)

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EXAMPLE: “Main menu” func ion modifica ion. Full scale value 1 (Fs1) from
4dm³/s o 5dm³/s. (Quick s ar menu enabled)
Enter in the “Quick start menu”
From any of the start-up
(power on) screens
Access to the “Main Menu”
by pressing the key
indicated
Access the “Scale” menu
with a short key press. Access the function “Fs1”
with a short key press
Change the value by pushing
the button rapidly as many
times as required
Confirm the new value with
a short press of the key
indicated on the keypad
Long push to return to
the main menu groups
Long push to return to
the initialization pages
Initial visualization page
To enter the main menu
input the key code (11111
as default) by increasing
the ‘0’ to ‘1’ and moving to
the next ‘0’ until the key
code is entered
Press the button indicated
to enter the Main menu
page screen from the Quick
menu page
To enter the key code press
the lower key
To move between main
menu function groups press
the arrow key indicated
Move between the
modifiable options by short
pressing the key indicated
on the keypad

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1.1 Nominal Diameter (ND) of sensor, (enter input value 0-3000 mm )
1.2 Sensor calibration data (Enter value as specified on sensor label)
1.3 Type of sensor: Enter the first two characters of the sensor serial number
1.4 Position of insertion sensor: 0=1 8DN, 1=1 2DN, 2=7 8DN
1.5 Factory parameters
1.6 Enables the empty pipe detection feature
1.7 Value of empty pipe sensibility detection
1.8 Enables the automatic procedure of zero calibration
2.1* Full scale value set for range N.1 (function info & modification page 22)
2.2* Full scale value set for range N.2
2.3* Unit of measure and number of decimal place (Info & modification page 23)
2.4* Pulse value on channel 1 (Function Info & modification page 23)
2.5* Pulse value on channel 2 (Function Info & modification page 23)
2.7* Duration of the pulse generated on channel 2 (Info & modification page 23)
2.8 Full scale frequency for channel 1 (0.1Hz-1000.0Hz)
2.9 Full scale frequency for channel 2 (0.1Hz-1000.0Hz)
2.6* Duration of the pulse generated on channel 1 (Info & modification page 23)
3.1* Time constant (function info & modification page 23)
3.2* Acceleration threshold (function info & modification page 23)
3.3* Anomalous signal peak cut-off threshold (Info & modification page 24)
3.4 Low flow zero threshold: 0-25% of full scale value
3.5 Filter on the power supply: 0.1s="ready" measure; 0.5s=filter of noise on the liquid
3.7* Automatic change of scale (function info & modification page 24)
3.8* Energy saving function (function info & modification page 24)
3.6 Enable automatic hourly internal calibration cycle. Measurement stopped for 8-15s.
4.1 Maximum flow rate value alarm setting
4.2 Minimum flow rate value alarm setting
4.3 Hysteresis threshold setting for the minimum and maximum flow rate alarms
4.4 Empty pipe detection threshold. Automatically set by the function 1.9
4.5*Current output value in case of failure (function info & modification page 24)
4.6* Frequency output value in case of failure (function info & modification page 25)
FUNCTIONS MENU
The main menu is
selected
from the Quick start menu by press
ing the key) and
enter
ing the factory
code (11111). Functions denoted in grey are displayed only with other active functions, or with optional
modules. (for details of the functions with the symbol “*” refer to pages 22-27). Not all the functions
displayed on the converter are shown below are reserved for serving purposes only and not configurable.

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6.1* Output 1 functions (function info & modification page 25)
6.2* Output 2 functions (function info & modification page 25)
6.3* Duty cycle value for pulses frequency output (Info & modification page 26)
6.4* Choice of function the range of current output n.1 (Info & modification page 26)
8.1 Choice of the language: EN= English, IT=Italian, FR= French, SP= Spanish
8.2 Display update frequency: 1-2-5-10 Hz
8.3 Display contrast
8.4 Quick start menu visualization
8.5* Enable the change value of the totalizer (info & modification page 27)
8.7* Total direct (positive) flow totalizer reset (info & modification page 27)
8.8* Partial direct (positive) flow totalizer reset (info & modification page 27)
8.6 Enable the page of net totalizer
8.13*Value of conversion currency for direct totalizer (info & modification page 27)
8.9* Total reverse (negative) flow totalizer reset (info & modification page 27)
8.10*Partial reverse (negative) flow totalizer reset (info & modification page 27)
8.12 Choice of the numbers of decimals for the visualization currency value: From 0 to 3
8.11 Visualizes the values of the partial totalizer in the unit of selected currency
8.14*Value of conversion currency for reverse totalizer (info & modification page 27)
5.1* Total direct (positive) flow totalizers reset enable
5.2* Partial direct (positive) flow totalizers reset enable
5.3* Total reverse (negative) flow totalizers reset enable
5.4* Partial reverse (negative) flow totalizers reset enable
5.6 Totalise counting lock command (see page 10)
5.7* Autozero calibration external command
5.9 Range change external command
7.1 Choice of the communication protocol for the IF2 device
7.3 Speed of the RS485 output (possible choices: 2400, 9600, 19200, 38400 bps)
7.4 Instruments answer delay
7.2 Address value of converter (range 0 - 255)