Sensitron MULTISCAN 8+ Reference manual

MT4412E Rev.3 15/10/2019 Page 1 of 30
MULTISCAN 8+
ATEX and SIL 1 certified
MANUAL FOR INSTALLATION
AND USE
SENSITRON S.r.l. Viale della Repubblica, 48
20010 CORNAREDO MI - Italy
Tel: + 39 02 93548155 Fax: + 39 02 93548089
E-MAIL: [email protected]

Technical manual MULTISCAN 8+
MT4412E Rev.3 15/10/2019 Page 2 of 30
Warning
THIS MANUAL MUST BE CAREFULLY READ BY ALL PERSONS WHO
ARE OR WILL BE RESPONSIBLE FOR INSTALLING, USING OR
SERVICING THIS PRODUCT.
Like any equipment, this product will perform as designed only if installed,
used and serviced in accordance with the manufacturer’s instructions.
OTHERWISE, IT COULD FAIL TO PERFORM AS DESIGNED AND
PERSONS WHO RELY ON THIS PRODUCT FOR THEIR SAFETY COULD
SUFFER SEVERE PERSONAL INJURY OR DEATH.

Technical manual MULTISCAN 8+
MT4412E Rev.3 15/10/2019 Page 3 of 30
THIS TECHNICAL MANUAL DESCRIBES THE PRODUCT IN
ITS COMPONENTS, THE INSTALLATION AND THE
OPERATION OF THE SYSTEM. THE CONFIGURATION
SOFTWARE IS NOT INCLUDED, SO PLEASE REFER TO
THE PROPER MANUAL.

Technical manual MULTISCAN 8+
MT4412E Rev.3 15/10/2019 Page 4 of 30
INDEX
1) INTRODUCTION................................................................................................................................... 5
1.1) BLOCK DIAGRAM SYSTEM WITH MULTISCAN 8+ CENTRAL UNIT............................................................. 6
1.2) TECHNICAL SPECIFICATIONS.............................................................................................................. 6
2) INSTALLATION.................................................................................................................................... 7
2.1) ASSEMBLY AND CONNECTIONS.......................................................................................................... 7
2.1.1) UNIT DIAGRAM AND PART IDENTIFICATION ................................................................................... 8
2.1.2) CENTRAL UNIT CARD LAYOUT..................................................................................................... 9
2.1.3) 16-RELAY CARD LAYOUT (OPTIONAL)........................................................................................ 10
2.2) FIELD DEVICE CONNECTIONS........................................................................................................... 12
2.2.1) DETECTOR CONNECTION ......................................................................................................... 13
2.3) STG/IN8-S REMOTE INPUT MODULES.............................................................................................. 18
2.4) STG/OUT16-S REMOTE OUTPUT MODULES..................................................................................... 19
2.4.1) STG/8REL RELAY EXPANSION BOARD ..................................................................................... 20
2.4.2) STG/IN8-S AND STG/OUT16-S MODULE ADDRESSING............................................................ 20
2.5) PROGRAMMING FROM A PC ............................................................................................................ 22
2.6) TCP/IP OPTIONAL MODULE............................................................................................................. 23
3) SYSTEM POWER UP AND OPERATION.......................................................................................... 23
3.1) POWER ON.................................................................................................................................... 24
3.2) SYSTEM STATUS............................................................................................................................. 25
3.3) MENU........................................................................................................................................... 28
3.4) ACTIVE EVENTS AND EVENT MANAGEMENT.................................................................................. 28

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1) INTRODUCTION
The highly innovative and versatile MULTISCAN 8+ central units the ideal solution for small
systems with up to 16 gas detectors.
The system provides for the direct connection of 8 detectors to the central unit (4-20mA) and to
additional 8 detectors that can be connected directly to the RS485 bus or via a remote module
with 8 x STG/IN8-S inputs.
Each input can be configured for different types of gas: toxic, refrigerant, flammable, and oxygen,
both for their deficiency and enrichment.
The backlit display offers an accurate indication of gas concentration and allows the display of
established alarm levels.
The central unit manages up to 38 relay outputs, of which 6 are on board the central unit and the
other 32 are via STG/OUT16S and STG/16REL cards.
The centralunitis supplied in an ABS housing andcan contain 2 x 12Vdc, 7Ah batteries to ensure
that the system works even in the event of a power failure.
The MULTISCAN 8+ is in the process of obtaining SIL1 and ATEX certification pursuant to
EN60079-29-1.
Overview of devices connectable to the MULTISCAN 8+ central unit.
Central unit model
RS485
serial bus
no.
Max no.
detectors
Max no.
outputs
Max number
ST.G/IN8
modules
Max number
ST.G/OUT16
modules
Notes
Multiscan 8+
1
8+8(*)
32+6(*)
1
1
(*) channels and outputs already present in the central unit
Other features of the MULTISCAN 8+, central unit are:
•Event log can be displayed on the screen or downloaded to a PC.
•USB and RS232 serial port for PC connection for programming and control via specific
software.
Central unit ordering codes and accessories
CODE
DESCRIPTION
STMTS/8+
MULTISCAN 8+ gas control panel.
8 Analog 4-20mA inputs and 6 relay outputs on-board the panel.
1 x RS485 type open bus line to connect additional 8 detectors through remote 8-input module
or addressable gas detectors daisy chained to the RS485 bus.
6 relay outputs and additional 16 relays via the dedicated STS/16REL card or via remote
modules.
The panel comes complete with 1 RS232 serial port for PC connection. Housed in ABS box
ACCESSORIES
CODE
DESCRIPTION
STG/IN8S
High safety 8-input remote module with improved performance for MULTISCAN++S1 control panel.
STG/16REL
16-relay card to be connected to MULTISCAN 8+ and STPL4/ESP to provide additional 16 relay
outputs
STG/OUT16S
High safety 16-output remote module (Open collector type) with improved performance.
STG/8REL
Plug and play relay board to be connected to STG/OUT16 to provide 8 relay outputs
STG/MTSS1-
CONF
Windows PC software for MULTISCAN++S1 control panel programming. Running under Windows
XP, VISTA, WIN7, 8, 8.1, 10.
The configuration software is supplied along with the control panel

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1.1) Block diagram system with Multiscan 8+ central unit
Fig. 1.1) System block outline
1.2) Technical specifications
Technical specifications
Housing:
IP 42 plastic box, 420x380x160 mm
Inputs:
Max. 16 detectors
Outputs:
6 relays in the central unit
16 through the STG/16REL card to be connected inside the central
unit
16 O/C or relay outputs via the STG/OUT16-S and STG/8REL
remote cards.
Serial ports:
1 x RS485
1 x RS232 (PC connection)
Power:
230 Vac
Absorption:
Max 10 VA
Display:
Liquid crystal display (LCD)
Optic indications:
Double row of 9 LEDS
Working temp.
0/-55°C
Storage temp.
-20 ÷ +60 C°
Working RH:
15-85%
Storage RH:
5-85% (non-condensing)
LOOP
(6)
Rs485
option: the detectors could be connected
directly on the loop in daisy-chain mode
(1) RILEVATORI GAS ANALOGICI 4-20 mA / 4-20 mA ANALOGGAS DETECTORS
(2) MODULO 8 INGRESSI ANALOGICI ST.G/IN8-S / ANALOG 8 INPUT MODULE
ST.G/IN8-S
(3) CAVO2 FILI TWISTATI PER Rs485 + 2 FILI PER ALIMENTAZIONE (12-24 Vdc) /
2 TWISTED WIRES FOR THE Rs485 BUS + 2 WIRES FOR THE POWER SUPPLY (12-24 Vdc)
(4) RILEVATORI GAS CON USCITA SERIALE Rs485 / GAS DETECTORS WITH Rs485 OUTPUTS
(5) MODULO16 USCITE O/C ST.G/OUT16PK / 16 O/C OUTPUTS MODULE ST.G/OUT16PK
(6) MODULO 8 RELE’ ST.G/8REL / 8 RELE’ ST.G/8REL MODULE
(1)
(2)
(3)
(4)
(5)
MULTISCAN 8+
16 relay

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2) INSTALLATION
2.1) Assembly and connections
Remove the 4 screws at the 4 corners of the box and remove the front part of the central unit box.
It is now possible to choose where toplace the cables. We recommend placing the cable for entry
by using a suitable cable press.
Secure the back of the central unit to the wall by using its appropriate holes.
Fig. 2.1 a) Central unit box
Connect the tri-polar network cable to the power supply (minimum 1.5mm2per pole) and
secure it with the specific wire clamp.
Power on the central unit, and connect the red and black fastons of the power supply to
the two 12 V 7 Ah lead buffer batteries, in a series
Fig. 2.1 b) Vac network connection
Vac

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2.1.1) Unit diagram and part identification
1- Power Supply (27 Vdc 4A)
2- 2 x 12V 7Ah batteries (not included)
3- RS232 serial port and USB
4- RS485 serial card
5- Relay outputs (6)
6- 8 inputs, 4-20mA
7- RS485 bus connection
8- Central unit card
Fig. 2.1.1) Unit diagram and part identification
5
4
3
21
6 7
8

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2.1.2) Central unit card layout
Fig. 2.1.2) Central unit card layout
Dip switchsettaggio (vedi tabella) Setting switches (seetable)
D3 sw itches: Cont rol pane l languag e
Language Sw1
Sw4 Sw3 Sw2
English
Italian
Spanish
Portuguese
German
French
Slovenian ON
OFF
ON ON ON ON ON ON ON
ON ON ON
ON ON ON ON ON
OFF OFF
OFF
OFF
OFF OFF
OFF OFF OFF OFF OFF
8 X INGRESSI ANALOGICI 4-20mA
8 x 4-20 mA ANALOG INPUTS
6 X USCITE RELE’ / 6 X RELAY OUTPUTS
SCHEDA SERIALE Rs485 Rs485 SERIALBOARD
LINEA SERIALE Rs485 Rs485 SERIAL LINE
DIGITAL INPUTS (NOT USED)
USB FOR PC
CONNECTION
(OPTIONAL)
Rs232
FOR PC
SWITCH
USB / SERIAL
CONNETTORE SCHEDA 16 USCITE RELE’ OPZIONALE
16 RELAY OPTIONAL BOARD CONNECTOR
DALL’ALIMENTATORE
FROM THE POWER
SUPPLY
CHIAVE / KEY SWITCH
USCITE AUSILIARIE ALIMENTAZIONE AUXILIARY POWER SUPPLY OUTPUTS
POSITIVO E NEGATIVO DALL’ALIMENTATORE POSITIVE AND NEGATIVE FROM POWER SUPPLY
NOT USED
NOT USED
NOT USED
AB
shield
NA CN
C
NA CN
C
1
2 3
4
5
6
+-++
--
27,2 Vdc 1 A max

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2.1.3) 16-relay card layout (optional)
Fig. 2.1.3) 16-relay card layout
Fig. 2.1.3 a) 16 relay card positioning
FOR MULTISCAN 8+
CONTROL PANEL
FOR Pl4+ CONTROL
PANEL (PL4/ESP
BOARD REQUIRED)
CONNECTORS
JUMPER FOR
NORMALLY ENERGIZED
OR
NORMALLY NOT ENERGIZED
RELAY
RELAY
116
1 8 9 16
R1
C NC NO
R2
C NC NO R4 R8 R10 R14
R15R11R7
R3
C NC NO C NC NO
C NC NO C NC NO
+-
12Vdc POWER SUPPLY
SOLO CENTR. Pl4+ / ONLY Pl4+ PANEL
LAYOUT

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2.1.4) Setting of the communication bus, RS232 PC serial and central unit
language
The series of D2 dip-switches are used to set the following:
•Baud Rate (communication speed) and RS485 bus protocol with field devices
(detectors and IN/OUT modules).
•Baud Rate (speed) of communication of the RS232 serial port to the personal
computer
The series of D3 dip switches is used to set the language of text on the display of the
central unit.
Note: the dip switch status is acquired when the central unit is switched on
Fig. 2.1.4) Dip-switch SD2 and SD3
D3 switches: Control panel language
Language Sw1Sw4 Sw3 Sw2
English
Italian
Spanish
Portuguese
German
French
Slovenian ON
OFFON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON ON
ON
ON ON
OFF OFF
OFF
OFF
OFF OFF
OFF OFFOFF
OFF OFF
Dip switch settaggio (vedi tabella)
Setting switches (see table)
NOT
USED

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Dip-switch 1: Baud Rate Bus RS485
Position
Bus communication speed
Detector and module compatibility
ON
115200
Smart “S” gas detectors; ST.G/IN8-S and
ST.G/OUT16-S modules
OFF
9600
Smart “3G” gas detectors; ST.G/IN8-S and
ST.G/OUT16-S modules
Dip-switches 2 and 3: RS485 bus communication protocol
Sw 2
Sw 3
Protocol
Detector and module
compatibility
Notes
ON
ON
Galileo
Smart “S” gas detectors;
ST.G/IN8-S and ST.G/OUT16-
S modules
Baud Rate 115200
OFF
ON
NU
NU
NU
ON
OFF
Modbus
Smart "G" gas detectors;
STG/IN8-S and STG/OUT16-S
modules
Baud rate 9600 (if they are
not connected to the Smart
"G" bus detectors, 115200
Bps can be set (switch 1)
OFF
OFF
Setting not used
Dip-switches 4 and 5: Communication (baud rate) of the RS232 serial port with
the PC
Sw 4
Sw 5
Baud Rate
ON
ON
9600 Bit/sec.
OFF
ON
19200 Bit/sec.
ON
OFF
38400 Bit/sec.
OFF
OFF
115200 Bit/sec. (default)
Dip-switches 6 and 7: not used
Dip-switch 8: restore default settings
Position
Function
ON
If set to ON, default data is restored when the central unit is switched on
OFF
Normal position
2.2) Field device connections
The unit has 1 RS485 data bus to which 8 gas detectors can be connected
The gas detectors are connected through the serial bus (directly in the serial RS485 if equipped
with serial output or through 1 module with 8 STG/IN8 S inputs if of type 4-20 mA) and the
ST.G/OUT16-S output module
The maximum length of each serial data bus is 800 m.
To connect devices, 4 conductors are required (intended both as detectors with a serial output as
well as IN and OUT modules): 2 for the RS485 serial bus and two for powering the devices. For
this reason, two different wires must be used or a single wire that has suitable characteristics, as
described below.

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-) The RS485 serial bus must be connected with an EIA RS 485 connection wire: No. 2 wires with
0.22/0.35 mm2 section with shield (TWISTED PAIR). Nominal capacity between conductors < 50
pF/m, nominal impedance 120 ohm. Total line length withthis type ofconnection must not exceed
1,000 metres. An example of arecommended cable is aBELDEN 9841 or similar wire (EIARS485
data transmission wire). Only connect detectors (and IN and OUT modules) in a "cascading"
manner. Avoid tree or star connections since they reduce interference immunity.
-) Detector power supply (and IN and OUT modules on the bus) must be connected with a 2- core
wire with adequate section based on the number of connected devices, their distance from the
power supply and each device’s consumption (please see the technical manual enclosed with
gas detectors for this purpose).
Each device connected on the unit's RS485 bus must have its own univocal address. See the
appropriate section of this manual to set the address of the STG/IN8 S and STG/OUT16-S
modules, and see the relative manual for setting the detector address.
2.2.1) Detector connection
Gas detectors can be connected to the MULTISCAN 8+ central unit in two different ways,
based on the detector output signal.
1) 4-20 mA analogue proportional output.
The detector connected to the unit and ST.G/IN8 S module will send a 4-20 mA signal
referring to its range (i.e. 0-300 ppm, 0-30 ppm, 0-100% LEL etc.) and the unit, suitably
programmed, will display the relevant gas concentration indication measured by the
detector and consequently activate the alarms when the set values are reached.
2) RS485 digital proportional output
The detector connected to the central unit will send a data signal on the RS485 line. This
signal refers to the range of the detector (i.e. 0-300 ppm, 0-30 ppm, etc.); the unit, suitably
programmed, will display the relevant gas concentration indication measured by the
detector and consequently activate the alarms when the set values are reached.

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Detectors with 4-20mA output
Detectors with 4-20mA analogue output are either connected to the central unit, directly on the
main board or via one remote 8-input STG/IN8-S module. The module may be connected
remotely to the central unit. For connection, a detector with a 4-20mA analogue output requires a
3-conductor cable: 2 conductors for the power supply (usually from 12 to 28 Vdc - refer to the gas
detector technical manual) and one conductor for the 4-20mA signal. The generally
recommended cable is a shielded 3 x 0.75, which allows up to 100 meters between the gas
detector and STG/IN8-S input module
Detectors with 4-20 mA output directly connected to the central unit
Fig. 2.2.1 a) Connection of the 8 detectors of the central unit
Detectors with a 4-20 mA output connected to the ST.G/IN8-S module
The following diagram shows the connection of a gas detector with a 4-20 mA output to a
STG/IN8-S input module. During system start-up, make sure that each gas detector reaches a
minimum voltage of 12 Vdc.
Fig. 2.2.1 b) Connection of the 8 detectors of the ST.G/IN8-S module
+V
+V -V
-V
2
3
4
5
6
7
8
S - +
1
DETECTOR
-V
I8
I7
I6
I5
+V
-V
I4
I3
I2
I1
+V
-V
B
A
+V
REMOTE INPUT
MODULE ST/G.IN8
(+V) (-V)
(S)
Positive
Negative
4-20 mA signal
4-20 mA
analog
gas
detector
Rilevatore
analogico
4-20 mA
MODULO INGR.
4-20 mA ST/G.IN8

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Detectors with RS485 output
Gas detectors provided with RS485 serial communication are connected directly to the RS485
bus of the MULTISCAN 8+ central unit. The STG/IN8-S input module and STG/OUT16-S output
module are also connected to the RS485 bus.
4 conductors are needed for this type of connection: 2 for the RS485 serial and 2 for the power
supply of devices. For this reason, we suggest that two different wires or a single wire is used.
with the features described below.
-) The RS485 serial bus must be connected with an EIA RS 485 connection wire: No. 2 wires with
0.22/0.35 mm2 section with shield (TWISTED PAIR). Nominal capacity between conductors < 50
pF/m, nominal impedance 120 ohm. Total line length withthis type ofconnection must not exceed
1,000 metres. An example of arecommended cable is aBELDEN 9841 or similar wire (EIA RS485
data transmission wire). Only connect detectors (and IN and OUT modules) in a "cascading"
manner. Avoid tree or star connections since they reduce interference immunity.
-) The power supply to the detectors (and IN and OUT modules on the bus) must be connected
with a 2-core wire with adequate section based on the number of connected devices, their
distance from the power supply and each device’s consumption (please see the technical manual
enclosed with gas detectors for this purpose).
Note: each detector connected on the RS485 line must have its own univocal address between 1
and 255 (247 for the ModBus protocol). Please see the gas detector technical manual for address
settings.
The diagram below shows the connection of IN and OUT detectors and remote modules on the
RS485 bus of the central unit

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Fig. 2.2.1 c) Direct connection of detectors on the RS485 bus
d
+ - A B
+ - A B
+ - A B
+ - A B
+ - A B
+-
+-
+-
+-+-
+-
+
-
A B
Dalla centrale o dall’alimentatore ausiliario remoto From the control panel or from the remote auxiliary power supply
Cavo twistato / schermato 2x022 (Belden 9841 o equivalente)
Twisted/ shielded 2x0,2 cable (Belden 9841 or equivalent)
Al rilevatore o modulo successivo To the next detector or module
Scheda centrale Panel main board
OUTPUT MODULE

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Fig. 2.2.1 d) Detector connection by STG/IN8-S
d
+A
B
Dalla centrale o dall’alimentatore ausiliario remoto From the control panel or from the remote auxiliary power supply
Cavo twistato / schermato 2x022 (Belden 9841 o equivalente)
Twisted / shielded 2x0,2 cable (Belden 9841 or equivalent)
-V I8 I7 I6 I5 +V -V I4 I3 I2 I1 +V
-V B A +V
REMOTE INPUT MODULE ST/G.IN8
MODULO INGR. 4-20 mAST/G.IN8
shield
SCHEDA CENTRALE / PANEL MAIN BOARD
-
+ s - 4-20mA
GAS DETECTOR
(up to 8)
STG/IN8
MODULE

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2.3) STG/IN8-S remote input modules
STG/IN8-S remote modules are field mounted and connected to the central unit via
RS485 buses. They are used to connect 8 x 4-20mA analogue gas detectors. Each
module must be addressed using the rotary switches on the PCB. The address must be
univocal and between 1 and 255 (1-247 for Modbus protocol). See the summary table in
para. X for the maximum number of connectable modules to the central unit. 1)
INTRODUCTION
Fig. 2.3) ST.G/IN8-S module
Jumper da non manomettere
/ jumpers not to be touched
Jp1
Jp2
Jp3
Jp4
Jp9
Jp11
Jp12
Jp14
Closed 1-2
Closed
Closed
Open Open
Open
Closed 1-2
Led
DL1: Guasto WD /WD Faul
DL2: TX Data
DL3: RX Data
DL4: RTS
Jp10 Resistenza di file linea
(EOL resistor)
Se il modulo è l’ultimo della linea chiudere Jp10
/ If the module is the last of the bus line, close JP10
A
B
Rs485 serial line
Morsettiera alimentazione e linea seriale
(Power supply and serial line)
Jp13 Communication Baud Rate setting:
Closed 115.000 bps (Multiscan++ control panel
Open 9.600 bps (old Galileo Multiscan control panel)
Jp13 Settaggio velocità comunicazione:
Chiuso 115.000 bps (Centrale Multiscan ++)
Aperto 9.600 bps (vecchia centrale Galileo Multiscan)
Commutatori rotativi
per l’indirizzo del modulo
Channels 5-8 Channels 1-4
-V +V-V +V
Morsettiera rilevatori
(gas detector connections)
Open
Rotary switches for
the module address)

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2.4) STG/OUT16-S remote output modules
STG/OUT16-S remote modules are field mounted and connected to the central unit via RS485
buses. They provide 16 Open Collector outputs (negative switch) with a programmable function
for the remote activation of sirens, solenoid valves, relays, etc. Up to 2 8-relay boards can be
connected to each STG/OUT16-S module, transforming the output from Open Collector to a
voltage-free exchange contact.
See the summary table in para. X for the maximum number of connectable modules to the central
unit. 1) INTRODUCTION
Each module must be addressed using the rotary switches on the PCB. The address must be
univocal and between 1 and 255 (1-247 for the Modbus protocol).
Fig. 2.4) STG/OUT16-S module
Morsettiera alimentazione
e linea seriale
(Power supply and serial line)
Commutatori rotativi per
l’indirizzo del modulo
Jp13 Communication Baud Rate setting:
Closed 115.000 bps
(Multiscan++ control panel
Open 9.600 bps
(old Galileo Multiscan control panel)
Jp13 Settaggio velocità comunicazione:
Chiuso 115.000 bps
(Centrale Multiscan ++)
Aperto 9.600 bps
(vecchia centrale Galileo Multiscan)
Led
DL1: Guasto WD /WD Faul
DL2: TX Data
DL3: RX Data
DL4: RTS
Resistenza di file linea
(EOL resistor)
chiudere s
close i
è l’ultimo della linea /
f the module
is the last of the bus line
e il modulo
-V +V -V
Morsettiera uscite O/Ci
(O/C output connections)
Outputs 9-16 Out 1-8
A
B
Rs485 serial line
Collegamento scheda relè (opzionale)
/ Relay board connection (optional)
Jumper da non manomettere
/ jumpers not to be touched
Jp5
Jp6
Jp7
Jp8
Jp9
Jp11
Jp12
Closed 1-2
Closed
Closed
Open
Open
Open
Open
Rotary switches
for the module address
+V
+V
+V
Esempio di collegamento relè
Example of relay connection

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2.4.1) STG/8REL relay expansion board
The STG/8REL 8-relay expansion board converts the O/C outputs of the STG/OUT16-S output
module into voltage-free exchange contacts. Up to two relay boards can be connected to each
output module. A relay board is directly connected to the output module (J1 connector) and a
second relay board is connected to the former.
Fig. 2.4.1) Relay board and connection to the output module
2.4.2) STG/IN8-S and STG/OUT16-S module addressing
STG/IN8-S and STG/OUT16-S modules are addressed using the two rotary switches in
RSW 1 and 2 hexadecimals. Rotary switches permit hexadecimal settings (base 16).
Each switch as 16 positions (0-F) and the pointer is positioned on the number chosen
using a screwdriver to create a decimal value between 1 and 255 (see table 1). See the
summary table in para. X for the maximum number of connectable modules to the central
unit. 1) INTRODUCTION
Each module must have univocal address in the system. Dual addresses are not
permitted even if modules are on different serial buses.
Esempiocollegamento
/ Connectionexample