PIETRO FIORENTINI M-LOG Plus User manual

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MANUAL
TECHNICAL MANUAL
M-LOG Plus
Electronics

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DISCLAIMER
All rights reserved. No part of this publication may be reproduced, distributed, translated into any
language, or transmitted by any electronic or mechanical means, including photocopying, recording, or
any other means of storage and retrieval, for other purpose other than the purchaser's personal use,
without prior written permission of the Manufacturer.
The Manufacturer is by no means liable for the consequences of operations not performed in
compliance with this manual.

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1Features ........................................................................................ 4
2Certifications ................................................................................. 5
2.1 ATEX 2014/34/UE directive ............................................................................5
3Suitability of the equipment for the installation place ................... 6
4Power supply................................................................................. 7
4.1 Battery (M-LOG PLUS A version).....................................................................7
4.2 External power supply (M-LOG PLUS T version) .............................................9
5User’s menu................................................................................. 10
5.1 Diagnostic......................................................................................................11
5.2 Factory reset..................................................................................................11
6Installation.................................................................................. 12
6.1 M-LOG PLUS clamps ......................................................................................12
6.2 Prescaler........................................................................................................13
6.3 M-Power clamps............................................................................................14
7Communication with the operations centre ................................. 16
7.1 Vectors...........................................................................................................16
7.2 Protocols........................................................................................................16
8Identification............................................................................... 17
9Maintenance................................................................................ 17
10 Checking...................................................................................... 17
11 Technical specifications............................................................... 18
11.1 I/O characteristic parameters .................................................................19
11.2 Power supply lines characteristic parameters .........................................20
12 Disposal....................................................................................... 22

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1Features
M-LOG PLUS is an intrinsically safe RTU equipped with a GPRS / GSM modem (in option LaRaWan)
designed for monitoring natural gas decompression plants.
Data download, configuration setting and firmware update are possible both remotely and via local
connection.
An optical serial port is available for local communication.
The man-machine interface consists of a liquid crystal display and a keyboard through which it is possible
to navigate through the data presentation menus.
The equipment has the following interface channels:
3 Pressure inputs (Absolute/relative) from integrated transducers
2 Temperature input from a two wires PT1000 sensor
2 Auxiliary analog inputs with 0÷5 Volt input range
10 Digital inputs
4 Digital outputs
1 RS485 Expansion line
M-LOG PLUS has been designed to ensure maximum installation versatility and to be powered by a
continuous 12VDC power supply via a dedicated M-POWER power supply, as well as a battery.
Three different versions are available: A, B, T.
M-LOG PLUS A is equipped with a GSM/GPRS integrated modem and is battery powered.
M-LOG PLUS B is not equipped with an integrated modem.
It is designed for the use of the M-POWER remote power supply (installed in a safe area) to which it is
possible to communicate the acquired data via an RS485 serial line.
M-LOG PLUS T is equipped with an integrated GSM/GPRS modem (different from the one for M-LOG
PLUS A). It is designed for the use of the M-POWER remote power supply (installed in a safe area) to
which it is possible to communicate the acquired data via an RS485 serial line.

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2Certifications
2.1 ATEX 2014/34/UE directive
The M-LOG PLUS series is certified according to Directive 2014/34 / EU (ATEX) both as intrinsically
safe equipment for use in applications in potentially explosive atmospheres and as associated equipment.
Certificate: 0425 ATEX 004371 X
Marking as intrinsically safe equipment:
Version A:
II 1 G Ex ia IIA T3 Ga Tamb = -25°C ÷ +60 °C
Version B:
II 1 G Ex ia IIB T3 Ga Tamb = -25°C ÷ +60 °C
Version T:
II 1 G Ex ia IIA T3 Ga Tamb = -25°C ÷ +60 °C
Marking as associated equipment:
All versions: II (1) G [Ex ia Ga] IIB
Versions M-LOG PLUS A and M-LOG PLUS T can only be used with gas from the group IIA
while the version M-LOG PLUS B can also be used with gas from the group IIB.
EXPLOSION RISK: Installation must be carried out in compliance with the prescriptions
contained in this manual

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3Suitability of the equipment for the installation place
In the case of use in areas with danger of explosion, it must be checked that the equipment provided is
suitable for the classification of the area and any flammable substances present.
The essential safety requirements against the risk of explosion in classified areas are established by
Directive 2014/34 / EU of the European Parliament and of the Council of 26 February 2014 (as regards
equipment) and 1999/92 / EC of 16 December 1999 (as regards the plants).
The criteria for the classification of areas with risk of explosion are given by the EN60079-10 standard.
The technical requirements of electrical systems in classified areas are given by the EN60079-14
standard.
The following table shows the legend of the marking for use in a hazardous area as intrinsically safe
equipment.
II 1 G
Equipment for surface systems with the presence of gas or vapours, category 1 suitable for zone 0
and with redundancy for zones 1 and 2
Ex ia
Intrinsically safe equipment, category ia
IIA
Equipment of group IIA suitable for substances (gases) of groups IIA.
IIB
(version B only) Group IIB equipment suitable for substances (gases) of groups IIB.
T3
Equipment temperature class (maximum surface temperature)
Ga
Equipment protection level
Conformity marking to applicable European directives
Marking of conformity to directive 2014/34 / EU and related technical standards
0425 ATEX 004371 X
0425 Number of the laboratory that issued the CE certificate
ATEX Reference directive
004371 Certificate number.
Xindicates that there are particular conditions of use which are indicated in the manual with safety
instructions.
1370
Number of the Notified Body (Bureau Veritas) which carries out the surveillance of the production
system.
Tamb
Ambient operating temperature of the equipment
Equipment with temperature class T3 are also suitable for substances with higher temperature class (T2,
T1)
The following table shows the legend of the marking for use in a safe area as associated equipment.
II (1) G
Associated equipment of category (1), to be installed in a safe area, for surface installations.
[Ex ia Ga]
Associated equipment of category ia with EPL Ga
IIB
Equipment of group IIB suitable for substances (gases) of groups IIB.
Conformity marking to applicable European directives
Marking of conformity to directive 2014/34 / EU and related technical standards
0425 ATEX 004371 X
0425 Number of the laboratory that issued the CE certificate
ATEX Reference directive
004371 Certificate number.
Xindicates that there are particular conditions of use which are indicated in the manual with
safety instructions.
1370
Number of the Notified Body (Bureau Veritas) which carries out the surveillance of the
production system.
Tamb
Ambient operating temperature of the equipment

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4Power supply
4.1 Battery (M-LOG PLUS A version)
M-LOG PLUS A can use different battery models:
BATTERY CODE
FUNCTION
BATTERY TYPE
DESCRIPTION
HP2 –BP
Modem Power supply
Lithium
Standard
LE-BP
CPU Power supply
Lithium
Standard
HP1-BP1
Modem Power supply
Lithium
Optional
The battery packs have been approved by the Notified Body which issued the ATEX type certificate
and it is therefore absolutely mandatory to use only the model provided.
RISK OF EXPLOSION
Do not short circuit. Do not heat or incinerate. Do not disassemble. Do not immerse in water. Do
not recharge.
Do not use the BU-BP battery pack for the M-LOG PLUS versions A and B. Use exclusively with
the T version
Exhausted batteries contain substances that are hazardous to the environment
and are subject to mandatory separate collection: dispose of in accordance with
the laws in force to allow for recycling. CER code 160605.
Replacement
Battery packs must always be replaced in the absence of an explosive atmosphere. Check the
operating conditions with suitable instruments before proceeding.
Replacing a battery pack involves removing the NON-metrological hardware seals.
It is not possible to insert two LE-BP batteries permanently
After replacing a battery, it is necessary to realign the residual autonomy indicators.
To minimize the risk of data loss, two LE - BP batteries can be temporarily connected together on the
CPU board. Before extracting the exhausted battery, connect the new one to the free battery connector
(BT2A or BT2B).
To replace an HP2 - BP or HP1-BP battery, simply extract the exhausted pack and replace it with a
new one.
The realignment of the residual autonomy indicators must be done through the following procedure:
1. Turn on the display.
2. Press the key until reaching the menu Battery.
3. Press the key →to access the sub menu RTU Battery.
4. Press again the key →to access the sub menu Change RTU Batt.
5. Press the key OK to realign the indicators for the RTU battery.
6. From the sub menu RTU Battery press the key to access GSM Battery.
7. Press the key →to access the sub menu Change GSM Batt.
Press the key OK to realign the indicator for the modem battery.
1
It is possible to use the equivalent battery HP1-BP instead of the standard battery HP2-BP

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After installing the RTU or replacing the battery pack, it is necessary to realign the battery
meters.
The realignment of the residual autonomy indicators must be done through the following procedure:
1. Turn on the display.
2. Press the key until reaching the menu Battery.
3. Press the key →to access the sub menu RTU Battery.
4. Press the key to access GSM Battery.
5. Press the key →to access the sub menu Change GSM Batt.
6. Press the key OK to realign the indicator for the modem battery.
Figure 1: CPU Battery
Figure 2: Modem Battery

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4.2 External power supply (M-LOG PLUS T version)
RISK OF EXPLOSION
the installation of the remote power supply must be carried out in accordance with the requirements
contained in the MT342-I M-POWER User Manual. Never use models other than the one provided.
It is NOT allowed to use the external power supply and a battery pack other than BU-BP at the
same time.
M-LOG PLUS is powered by an external device, the M-POWER.
The remote power supply is available both for solar panel source (PP version) and for mains power
supply with 12Vdc output (INS version).
Both versions are available in the version for DIN rail or wall installation.
To ensure continuity of service in case of interruption of the primary power source, a backup battery
must be considered, the capacity of which must be determined according to the requirements of the
specific use case. The backup battery ensures full system functionality during a power failure.
It is possible to use as a secondary backup an optional lithium battery (BU-BP) capable of keeping only
the conversion function active in case of the main battery failure.
It is NOT allowed to simultaneously use the external power supply and a battery pack other than BU-
BP.
The sizing of the mains power supply, the solar panel controller and the backup batteries must be
carried out considering the requirements of the specific application.
Figure 4: M-POWER wall version
Figure 3: M-POWER DIN rail version

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5User’s menu
Under normal operating conditions M-LOG PLUS keeps the display off. To access the main menu,
press the OK button.
You can navigate in the menu using the keys . the keyallows you to access the submenus if
available. The key allows you to return to the previous menu.
The menu can only be used to view quantities already configured in the equipment or to force
predefined actions. It is not possible to edit the configurations set.
MENÙ
Ok
RTU state (Operating, Excluded, Calibration)
Id Device
→
Set ID - Inbound
Device’s identification Number

Date&Time
→
Current Date and Time
Historicization
Historicization Interval
Residual Shift
Residual time shift

Input
State
→
Analog Inputs
→
AN1
Current value of analogue input 1

AN2
Current value of analogue input 2

AN3
Current value of analogue input 3

Digital Inputs
→
DI1
Current Value Digital Input 1

DI2
Current Value Digital Input 2

DI3
Current Value Digital Input 3

DI4
Current Value Digital Input 4

DI5
Current Value Digital Input 5

DI6
Current Value Digital Input 6

Counters

CNT1
Current Value Counter 1

CNT2
Current Value Counter 2

Battery
→
RTU Battery
→
Hours Left
% LE –BP Battery Pack Status

Modem Battery
→
Hours Left
% HP1 - BP Battery Pack Status

Archive Modem
Batt
→
Actual State
Actual Calls Number

Previous States
Previous Calls Number (9 elements)

Print Archive
Print archive over the serial Line

Modem
→
Call Centre
Force a call to the configured remote management
centre

Id Modem
Id Modem associated with RTU
→
Conf Modem Centre
ID Configuration

Start GSM Data
Force starting the modem in GSM data mode

GSM Signal
View GSM Signal intensity

Modem Local Echo
Redirect modem data to local IR port (for testing purp.)

Last connection
Last Connection Date

State
→
Diagnostic
See Table 2
→
Diagnostic tel
Diagnosis of calls for each single number called

Buffer Events
→
Event 1, 2...
Events Buffer

Reset Events
Reset Events Buffer

Print Events
Print Events over the Local Serial Port

Connection
TPOWER
Indicates if the RTU is connected to TPOWER

Sistema
→
S/N Device
Serial Number RTU

S/N Press. 1
Serial Number transducer 1

S/N Press. 2
Serial Number transducer 2

S/N Press. 3
Serial Number transducer 3

Service
→
Silencing
Turn off the modem and cancel alarms

Type
Configure the peripheral type

Total Reset
Delete RTU configuration and reset

Exclusion
→
Activate/Deactivate
Activate or Deactivate Maintenance Mode

Modem ON
→
Activate/Deactivate
Activate or Deactivate Modem always ON mode

SW VER
View Firmware and Hardware revisions
Table 1: Operating Menu

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5.1 Diagnostic
The diagnostic information shown in the string on the display reports the status of each diagnostic bit
in hexadecimal format: each bit, when set equal to 1, indicates a specific anomaly.
1
2
3
4
5
6
7
8
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
2
5
2
6
2
7
2
8
2
9
3
0
3
1
3
2
0
0
0
0
0
0-F
0
0-F
VISUALIZZAZIONE A DISPLAY
FUNCTION
n.bit
UNTEESTED
32
RESERVED –HARDWARE ERROR (XRAM)–TRY RESET PROCEDURE
31
RESERVED –HARDWARE ERROR (FLASH WRITE)–TRY RESET PROCEDURE
30
RESERVED –HARDWARE ERROR (FLASH ERROR)–TRY RESET PROCEDURE
29
LOW BATTERY
24
ADC ERROR
23
ANALOG CHANNEL NOT CALIBRATED
22
COUNTING FREQUENCY OUT OF THE LIMIT
21
Table 2: Diagnostic
Calls Diagnostic
Within the Batteries menu it is possible to obtain some information relating to the number of calls made
by the equipment.
•Browsing the menu Battery, press the key until reaching the sub menu Archive Batt. GSM.
•Press the key →to access the list of calls made by the machine. Each item in the list corresponds
to the instant in which the GSM modem battery was replaced.
•Press another time the key →to view current calls, divided into 2 categories:
oTotal calls made by the RTU
oFailed calls from the RTU
5.2 Factory reset
It is possible to restore the RTU to its original factory conditions.
1. Disconnect the LE –BP battery pack;
2. Wait for 5 seconds;
3. holding down the keys reconnect the battery pack;
4. Wait for the message RESET HW to appear on the display;
5. Wait for the RTU to restart.
ATTENTION: carrying out the reset procedure involves resetting the
parameters of the entire set configuration. The internal calibration
will be maintained, it will be necessary to reset the gain parameters of the transducer.
Figure 4:Clamp battery

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6Installation
It is NOT sufficient for a device to be intrinsically safe for it to be connected to associated equipment. It is
necessary that a qualified technician or a body in charge proceed with the verification of the system and
issue of suitable certification proving the compatibility between the electrical safety parameters possessed by both
devices.
The essential safety requirements against the risk of explosion in classified areas are established by the European
Directives 2014/34 / EU of 26 February 2014 (for equipment) and 1999/92 / EC of 16 December 1999 (for plants).
The criteria for the classification of areas with risk of explosion are given by the EN60079-10 standard.
The technical requirements of electrical systems in classified areas are given by the EN60079-14 standard.
6.1 M-LOG PLUS clamps
The replacement of the pressure or temperature transducer is not allowed.
Opening the lid removes the metric seals.
Refer to chapter 8 for the characteristic parameters of intrinsically safe circuits.
Figura 7: Morsettiera M-LOG PLUS
Auxiliary inputs AIN1, AIN2 accept analog signals from galvanically isolated instruments. Refer to Chapter
8 for safety parameters for electrical coordination.
The digital inputs from number 1 to number 8 provide for the application of a voltage-free signal, inputs
DI9 and DI10 can also accept a voltage signal.
The RS485 expansion line can be used for connection to a galvanically isolated equipment.
The digital outputs provide four open collector channels. The devices to which the connection is made
must be galvanically isolated.
CLAMP.
DEN.
FUNCTION
M1
PTA-
PT1000 A Transducer negative
PTA+
PT1000 A Transducer positive
PTB-
PT1000 B Transducer negative
PTB+
PT1000 B Transducer positive
AIN1
Analog Input 1
AIN2
Analog Input 2
GND
Ground
GND
Ground
M2
VP1+
Piezoresistive Pressure Sensor 1 –input power –positive
VS1+
Piezoresistive Pressure Sensor 1 –output signal –positive
VS1-
Piezoresistive Pressure Sensor 1 –output signal –negative
PSW1
Piezoresistive Pressure Sensor 1 –input power –negative
VP2+
Piezoresistive Pressure Sensor 2 –input power –positive
VS2+
Piezoresistive Pressure Sensor 2 –output signal –positive
VS2-
Piezoresistive Pressure Sensor 2 –output signal –negative
PSW2
Piezoresistive Pressure Sensor 2 –input power –negative
VP3+
Piezoresistive Pressure Sensor 3 –input power –positive
VS3+
Piezoresistive Pressure Sensor 3 –output signal –positive
VS3-
Piezoresistive Pressure Sensor 3 –output signal –negative
Figure 5 Clamps MLog

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PSW3
Piezoresistive Pressure Sensor 3 –input power –negative
M3
GND
Ground
GND
Ground
DI1
Digital Input 1
DI2
Digital Input 2
DI3
Digital Input 3
DI4
Digital Input 4
DI5
Digital Input 5
DI6
Digital Input 6
DI7
Digital Input 7
DI8
Digital Input 8
DI9
Digital Input 9
DI10
Digital Input 10
M4
GND
Ground
V CPU
CPU Power Supply
V MDM
GSM Modem Power Supply
485 +
RS485 LINE+
485 -
RS485 LINE-
M3
DO1+
Digital Output 1 - positive
DO1-
Digital Output 1 –negative
DO2+
Digital Output 2 - positive
DO2-
Digital Output 2 - negative
DO3+
Digital Output 3 - positive
DO3-
Digital Output 3 - negative
DO4+
Digital Output 4 - positive
DO4-
Digital Output 4 - negative
Table 3: Description of the available clamps
6.2 Prescaler
Clamps DI9 and DI10 (M3-11, M3-12) have two independent prescalers that can be enabled via selector
LK3 and LK2 respectively.
In this mode the frequency of the input pulses is divided by a configurable factor from 8 to 4096, this
allows to extend the range of input pulse frequencies up to 12KHz.
The prescalers are configured by the LK4 and LK5 selectors; the available options are shown in Tables 4
and 5.
Figure 6: Selectors for enabling and configuring the prescalers for digital inputs DI9 and DI10
LK3
LK5
Prescaler
Frequency
Max
LK2
LK4
Prescaler
Frequency
Max
A-B
-
-
3 Hz
A-B
-
-
3 Hz
B-C
A
1
3 Hz
B-C
A
1
3 Hz
B
8
24 Hz
B
8
24 Hz
C
64
192 Hz
C
64
192 Hz
D
512
1.5 KHz
D
512
1.5 KHz
E
4096
5 KHz
E
4096
5 KHz
Table 4 - DI9 Configuration Table 5 - DI10 Configuration

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6.3 M-Power clamps
Main board
CLAMP.
DEN.
FUNCTION
M1
Vin+
Power Supply Input - Positive
Vin-
Power Supply Input - Negative
M2
RS485 A
RS485 EXPANSION LINE+
RS485 B
RS485 EXPANSION LINE-
M3
RS485 A
RS485 LINE+
RS485 B
RS485 LINE-
M4
LOW BATT +
Low battery Digital Output –Positive
LOW BATT -
Low battery Digital Output - Negative
M5
V MODEM+
Modem Power Supply Output - Positive
V MODEM-
Modem Power Supply Output - Negative
M6
V CPU+
CPU Power Supply Output - Positive
V CPU-
CPU Power Supply Output - Negative
Table 6: M-Power clamps
Namur inputs expansion
Figure 10:3 NAMUR inputs expansion
CLAMP.
DEN.
FUNCTION
M201
OUT1+
Transducer connection NAMUR 1 - positive
OUT1-
Transducer connection NAMUR 1 - negative
OUT2+
Transducer connection NAMUR 2 - positive
OUT2-
Transducer connection NAMUR 2 - negative
M202
IN1+
Repetition NAMUR 1 –positive
IN1-
Repetition NAMUR 1 –negative
IN2+
Repetition NAMUR 2 –positive
IN2-
Repetition NAMUR 3 - negative
Figure 7: Clamps M-Power
Figure 8: Namur Expansion

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I/O Expansion
Table 7: I/O Link configruation
DIN RAIL INPUTS IP 67 inputs
CLAMP
DEN
FUNCTION
CLAMP.
DEN
FUNCTION
M1A
GND
Ground
M1
GND
Ground
DI1
Digital input 1
DI1
Digital input 1
DI2
Digital input 2
DI2
Digital input 2
DI3
Digital input 3
DI3
Digital input 3
DI4
Digital input 4
DI4
Digital input 4
GND
Ground
GND
Ground
GND
Ground
M1B
AIN1
Analog input 1
AIN1
Analog input 1
AIN2
Analog input 2
AIN2
Analog input 2
AIN3
Analog input 3
AIN3
Analog input 3
AIN4
Analog input 4
AIN4
Analog input 4
DO1+
Digital output 1 –positive
DO1+
Digital output 1 –positive
DO1-
Digital output 1 –negative
DO1-
Digital output 1 –negative
DO2+
Digital output 2 –positive
DO2+
Digital output 2 –positive
DO2-
Digital output 2 –negative
DO2-
Digital output 2 –negative
Table 8: DIN RAIL inputs Table 9: IP 67 inputs
LINK
POS.
FUNCTION
LK1
1 –2
AIN3 +-5V FS o 4-20mA (LK3)
2 –3
AIN3 0 +- 20V FS
Open
AIN3 Open
LK2
Open
AIN0 Voltage
Closed
AIN0 Current
LK3
Open
AIN3 Voltage
Closed
AIN3 Current
LK4
Open
AIN2 Voltage
Closed
AIN2 Current
LK5
Open
AIN1 Voltage
Closed
AIN1 Current
Figure 9: Expansion I/O

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7Communication with the operations centre
M-LOG PLUS can be configured for different types of communication towards the remote control and
remote management center. All the modes listed below are available both in the battery version and in
the remote powered version (solar panel or mains voltage). The autonomy in the absence of external
power depends on the specific communication technique configured.
A. Periodic spontaneous communication with alarm and immediate return
B. Always active waiting for a call
C. Always on in continuous connection (RTU real-time mode)
D. Window access waiting for a call
E. Window lit in continuous connection during the ignition period
7.1 Vectors
M-LOG PLUS has two internal connectors for housing communication modules (Modems). The
replacement or installation of the communication modules can be done after installation and does not
require the replacement of additional elements to the module itself.
Currently supported modules:
A. 2G Module
B. LoRaWan
7.2 Protocols
A. Modbus
B. IEC60870-5-104
C. LoRaWan
-

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ATTENTION: DANGER OF ELECTROSTATIC DISCHARGE
8Identification
M-LOG PLUS is identified by a front plate on which are reported:
CE Marking
ATEX Certificate number
Version (A, B, T)
Protection mode identification string
Serial number
Year of production
9Maintenance
There are no scheduled maintenance operations.
In order to prevent the accumulation of electrostatic charges on the equipment, appropriate
procedures must be adopted during installation, maintenance and use.
10Checking
All verification and / or maintenance operations must be carried out according to the criteria of the
European standard EN60079-17.

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11 Technical specifications
MECHANICAL
MIN
TIP
MAX
Casing Dimensions (L X H X P)
210x150x80 mm
Pressure Sensors Dimensions (L X H X P)
62 X 28 X 28 mm
Pressure Sensors Dimensions –headroom (L)
50 mm
IP Protection
66 / 67
ENVIRONMENT
MIN
TIP
MAX
Operating temperature
-25°C
+60°C
Mechanical/Electromagnetic Class
M2/E2
ELECTRICAL
MIN
TIP
MAX
Battery Life –PACK HP1-BP ⚫
5 years
Battery Life –PACK LE –BP ⚫
5 years
LOCAL OPTICAL INTERFACE
EN62056-21 (ZVEI)
UART Configuration
9600,8,n,1
REMOTE COMMUNICATION
Communication technologies
GSM/GPRS 2G, LoRAWAN
Protocols
Modbus, IEC60870-5-104, LoRaWAN
Connection Type
Scheduled Call; Configuration; Download Archive and
Current Data, Clock Set.
Firmware update protection
Local or Remote. CRC32 Protection
ANALOG INPUTS
MIN
TIP
MAX
Channels
7
Type
Piezoresistive (n.3) Voltage / Current (n.2 05V,
4/20mA configurable) / PT1000 (n.2)
ADC Resolution
16 bits
DIGITAL INPUTS - COUNTERS
MIN
TIP
MAX
Channels
10
Flow Rate Inputs
2
Frequency
0
200 Hz
Output Voltage
3 V
3 V
Current
3 mA
Type
Relay Contact
DIGITAL OUTPUTS
MIN
TIP
MAX
Channels
4
Voltage
15V
Insulation
1500 Vac
Type
Open collector npn
⚫Riferita alle condizioni operative standard: 1 connessione dati al giorno; 1 chiamata di allarme al mese
Internally generated. Do not connect external voltage generator.

MT334-I Rev. 0.3 08/04/2022
19 - 22
Document classified as: 2 - Company Confidential
11.1 I/O characteristic parameters
Digital Inputs 1-8
Parameter
Uo
Io
Po
Ui
Ii
Pi
Co
Lo
Ci
Li
Value (Ver. A)
6 V
6,5mA
10mW
6 V
N.A.
N.A.
10μF
47μH
Nota 1
5μH
Value (Ver. B)
6 V
6,5mA
10mW
6 V
N.A.
N.A.
10μF
47μH
Nota 1
2,5μH
Value (Ver. T)
6 V
6,5mA
10mW
6 V
N.A.
N.A.
10μF
47μH
Nota 1
50nH
Digital Inputs 9-10
Value (Ver. A)
6 V
6,5mA
10mW
15 V
N.A.
N.A.
10μF
47μH
Nota 1
5μH
Value (Ver. B)
6 V
6,5mA
10mW
15 V
N.A.
N.A.
10μF
47μH
Nota 1
2,5µH
Value (Ver. T)
6 V
6,5mA
10mW
15 V
N.A.
N.A.
10μF
47μH
Nota 1
50nH
Digital Outputs
Parameter
Uo
Io
Po
Ui
Ii
Pi
Co
Lo
Ci
Li
Value (Ver. A)
6 V
6,5mA
10mW
15V
N.A.
N.A.
10μF
47μH
Nota 1
5μH
Value (Ver. B)
6 V
6,5mA
10mW
15V
N.A.
N.A.
10μF
47μH
Nota 1
2,5μH
Value (Ver. T)
6 V
6,5mA
10mW
15V
N.A.
N.A.
10μF
47μH
Nota 1
50nH
Inputs for Analog pressure sensor (1)
Parameter
Uo
Io
Po
Ui
Ii
Pi
Co
Lo
Ci
Li
Value
6 V
222mA
333mW
N.A.
N.A.
N.A.
10μF
47μH
N.A.
N.A.
Auxiliary Analog inputs 0-5V
Parameter
Uo
Io
Po
Ui
Ii
Pi
Co
Lo
Ci
Li
Value (Ver. A)
6 V
1mA
6mW
6 V
N.A.
N.A.
10μF
47μH
450μF
5μH
Value (Ver. B)
6 V
1mA
6mW
6 V
N.A.
N.A.
10μF
47μH
85μF
2,5μH
Value (Ver. T)
6 V
1mA
6mW
6 V
N.A.
N.A.
10μF
47μH
450μF
50nH
Input for Temperature sensor
Parameter
Uo
Io
Po
Ui
Ii
Pi
Co
Lo
Ci
Li
Value
6 V
26mA
39mW
N.A.
N.A.
N.A.
10μF
47μH
N.A.
N.A.
RS485 Serial Expansion Line
Parameter
Uo
Io
Po
Ui
Ii
Pi
Co
Lo
Ci
Li
Value (Ver. A)
6 V
6,5mA
10mW
6V
N.A.
N.A.
180 μF
200μH
450μF
5μH
Value (Ver. B)
6 V
6,5mA
10mW
6V
N.A.
N.A.
500 μF
200μH
85μF
2,5μH
Value (Ver. T)
6 V
6,5mA
10mW
6V
N.A.
N.A.
180 μF
200μH
450μF
50nH
(1) The following transducer models can be connected to these channels:
STS TD GAS, STS TM EX
GEMS 563966, GEMS 564280
TECLAB GSE-03, TECLAB TL01, TECLAB GSE/03/1
FAST GSE-03, FAST TL01, FAST GSE/03/1
Or any ATEX certified transducer with characteristic parameters compatible with the values shown in the table.

MT334-I Rev. 0.3 08/04/2022
20 - 22
Document classified as: 2 - Company Confidential
Note1:
The capacity Ci that M-LOG PLUS presents externally is a function of the applied voltage Ui: the
considerations that led to these values are described in the technical note filed with the Notified Body
that issued the type certificate.
The following two tables show the Ci values as a function of the applied voltage:
Voltage
V
Version A
and T
Ci (μF)
8,7
450
9
225
10
45
11
27
12
16,2
13
10.2
14
7,66
15
6,3
Table 11.1-15
Table 11.1-16
11.2 Power supply lines characteristic parameters
External battery –A version
If you decide to power the modem section of M-LOG PLUS version A with an external battery pack, the
following characteristic parameters must be taken into consideration:
Parameter
Uo
Io
Po
Ui
Ii
Pi
Co
Lo
Ci
Li
Value
NA
NA
NA
5,9V
3,9A
5,76W
NA
NA
880 μF
5μH
Table 11.3-1
External power source –B version
M-LOG PLUS Version B can be powered from an external source via the SE12354 interface card
(optional) mounted in the slot that normally houses the GSM / GPRS modem.
The board allows power supply from an external source and at the same time makes an additional RS422
serial line available.
For interfacing, associated equipment is required to ensure galvanic isolation between the power
supply, the M-LOG PLUS communication circuits and the external correspondents.
Characteristic parameters of the power supply line:
Parameter
Uo
Io
Po
Ui
Ii
Pi
Co
Lo
Ci
Li
Value
NA
NA
NA
6V
650mA
N.A.
NA
NA
165 μF
2,5 μH
Table 11.3-2
Voltage
V
Vee B
Version B
Ci (μF)
6
85
7
25,8
8
8,5
9
3,4
10
1,86
11
1,18
12
0,77
13
0,53
14
0,4
15
0,31