MSA MDU-102 User manual

Limited Liability Company
«NPK MORSVYAZAVTOMATICA»
26E, Kibalchicha str., 192174,
St. Petersburg, Russia
Phone.: [phone]
Fax: [phone]
[email protected]
www.unicont.com
NMEA AMPLIFIER-DISTRIBUTOR
MDU-102
Operating manual

Operating Manual
2
Table of contents
INTRODUCTION.........................................................................................................................3
1DESCRIPTION AND OPERATION OF THE PRODUCT...............................................4
1.1 Description............................................................................................................................4
1.2 Technical specifications........................................................................................................4
1.3 Structure and operation of the Product..................................................................................5
1.4 Measurement instruments, tools and appliances...................................................................6
1.5 Marking and sealing..............................................................................................................7
1.6 Packaging..............................................................................................................................7
2INTENDED USE OF THE PRODUCT................................................................................8
2.1 Operational constraints..........................................................................................................8
2.2 Usage preparations................................................................................................................8
2.3 Usage of the product .............................................................................................................9
3TECHNICAL SERVICE OF THE PRODUCT.................................................................19
3.1 General description .............................................................................................................19
3.2 Safety features.....................................................................................................................19
3.3 Maintenance routine............................................................................................................19
3.4 Preservation.........................................................................................................................20
4CURRENT REPAIR OF THE PRODUCT........................................................................21
4.1 General description .............................................................................................................21
4.2 Safety features.....................................................................................................................21
4.3 Current repair ......................................................................................................................21
5STORAGE.............................................................................................................................22
6TRANSPORTATION...........................................................................................................23
7DISPOSAL.............................................................................................................................24
8WARRANTY OBLIGATIONS...........................................................................................25
APPENDIX A (MANDATORY) OUTLINE AND INSTALLATION DIMENSIONS.........26

NMEA amplifier-distributor
MDU-102
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INTRODUCTION
This operating manual (hereinafter referred to as OM) is intended to describe the
structure, operating principles, technical specifications and service of NMEA amplifier-
distributor MDU-102 (hereinafter referred to as the Product, the MDU).
In addition to the instructions given in this document, the safety regulations and
rules applicable in the field shall be observed.
Only those who have read and understood this document and those who have
had special training shall be permitted to operate with the Product according to the ap-
plicable regulations.
Terms and abbreviations:
OM –operating manual;
S –software;
SB –storage battery;
SC –short circuit;
TS –technical service;
CL –check list;
MDU –NMEA amplifier-distributor MDU-102;
LFSG –large fine-pored silica gel granular.

Operating Manual
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1DESCRIPTION AND OPERATION OF THE PRODUCT
1.1 DESCRIPTION
The Product is designed for the multiplication of NMEA 0183 signals, version
1-3 (IEC 61162-1, 61162-2) or other serial data transmissions via RS-232 and
RS-422/485 interfaces from one or two sources. The unit provides a checksum test for
data received on the first channel.
1.2 TECHNICAL SPECIFICATIONS
Technical specifications of the Product are represented in Table 1.
Table 1 –General technical specifications of the Product
Parameter
Value
Electrical specifications
Input voltage, DC, V
24 (9.5…36.0)
Max. power consumption, W
3
Galvanic isolation from power mains
+
Reverse polarity protection
+
Overvoltage protection
+
Inputs
Number of input ports, pcs.
2 («CH»1, «CH2»)
Supported interfaces
RS-232, RS-422/485
Max. baud rate, bit/s
115200
Optoisolation of inputs
+
Outputs
Number of output ports, pcs.
8 (2×4)
Number of output groups
2 («A»and «B»)
Output optoisolation
4 non-isolated
4 isolated
Supported interfaces
RS-232, RS-422/485
Max. baud rate, bit/s
115200
General specifications
Overall dimensions, mm
194×119×31
Protection degree
IP22
Limiting temperature, °С
–60…+70
Operating temperature, °С
–15…+55
Weight, kg
0.65

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1.3 STRUCTURE AND OPERATION OF THE PRODUCT
1.3.1 The Product is manufactured in metal casing where a grounding stud and
connection ports are located, see Figure 1.
Figure 1 –The Prodict’s appearance
The Product’s functional elements are represented in Table 2.
Table 2 –Functional elements
№
Element
Type, size and
identifier
Description
1
Ports
–
To connect power supply and data input
(output)
2
Grounding stud
М4х10
Main element of the Product grounding
Note –Positions (№) are shown in Figure 1.
1.3.2 The Product connection via RS-232 and (or) RS-422/485 interfaces is
shown in Figure 2. Assignment of port terminals is represented in Table 3.
Figure 2 –RS-232 and (or) RS-422/485 connection diagram

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Table 3 –Assignment of the Product port terminals
Connector
Terminal №
Description (assignment)
«12/24V»
+
To connect input power supply
E
–
«CH1»
B
To input data
A
«CH2»
B
A
«AI 1», «AI 2»,
«BI 1», «BI 2»
B
To output data via optoisolated outputs
0
A
«A 1», «A 2»,
«B 1», «B 2»
B
To output data
0
A
1.4 MEASUREMENT INSTRUMENTS,TOOLS AND APPLIANCES
Consumables required for the TS are represented in Table 4.
Table 4 –Consumables required for the TS
Name and identifier
of consumables
Amount
of consumables
Note
Cleaning cloth
0.10 kg
1To clean the Product’s surface – use clean cloth;
2To remove severe contamination –use cloth soaked in
alcohol
Rectified hydrolytic
technical ethyl alcohol
0.05 l
To soak cloth and remove contamination from screen
Varnish
0.05 kg
To cover surfaces of the Product in case of paint coating
damage
Abrasive cloth
0.06 х 0.06 m
To polish surfaces of the Product in case of paint coating
damage

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MDU-102
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1.5 MARKING AND SEALING
The Product has a nameplate indicating name, serial number, date of manufac-
turing, weight, protection degree, input voltage and power consumption.
The sealing of the Product is not provided.
1.6 PACKAGING
At the time of delivery the Product is packed in a corrugated board box and in-
ner packaging (air bubble film) ensuring its transportation and storage at the warehouse.
Transport packaging is also used as a returnable packaging for transportation of
the Product to the repair location and back.
The sealing of transport packaging is not provided.

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2INTENDED USE OF THE PRODUCT
2.1 OPERATIONAL CONSTRAINTS
Select the installation site in compliance with operational constraints (operating
temperature and protection degree –IP).
Caution! Distance between the installation site and magnetic compass shall
not be less than 1 m!
2.2 USAGE PREPARATIONS
2.2.1 Safety features
While preparing the Product for operation, check it visually after unpacking;
mechanical damage shall be absent.
Connection to power mains shall be provided only in compliance with input
power requirements.
Before connecting the Product shall be switched off and have a proper ground-
ing.
While using the Product the staff shall follow “The technical rules for operation
of electric installation” and “Safety rules for operation of electric installation” while
testing electrical circuits and insulation resistance.
2.2.2 Visual check procedure
Before switching the Product on:
a) observe visually integrity and initial position of the controls on the front pan-
els;
b)check the absence of dust and dirt on the Product casing; clean with a soft
cloth if necessary, see Table 4;
c) check that cable connectors are securely connected to the Product and reliable
grounding.
2.2.3 Switching on instructions. While connecting the Product and preparing it
for operation follow the steps below:
a) transfer circuit breakers of main power switchboard to «OFF» position;
b)connect connection cables to the Product;
c) transfer circuit breakers of main power switchboard to «ON» position».
Note –The Product is ready for operation within 5 second after power supply.

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2.2.4 To switch The Product off:
a) transfer circuit breakers of main power switchboard to «OFF» position;
b)disconnect the connection cables.
2.3 USAGE OF THE PRODUCT
2.3.1 Operation modes
The MDU ensures operation in three modes:
a) Signal multiplication mode with select of active channel;
b) Independent mode of signal multiplication;
c) Signal multiplication mode with a checksum test.
Operation modes and other Product settings are carried out by
DIP-switches «SW1», see Figures 3, 4.
Figure 3 –MDU settings on DIP-switch «SW1»

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Figure 4 –DIP-switch «SW1»on the Product’s PCB
Modes are selected by DIP-switches «SW1»position «9»and «10»according to
Table 5.
Table 5 –Modes and corresponding DIP-switch «SW1»positions
Multiplication mode
Input channel
«SW1»
«ХР1»
position «9»
position «10»
With active channel select
«CH1»
0
0
1–2
«CH2»
2–3
Automatic select
×
Independent
–
1
0
–
With checksum test
Automatic select
0
1
–
Notes
1 «×» - jumper is not set.
2 «–» - parameter is not used.
3 «0» - switched off (OFF).
4 «1» - switched on (ON).
2.3.2 Signal multiplication mode with active channel select
2.3.2.1 In this mode the Product receives data from active input «CH1»or
«CH2» and transmits it to eight outputs, see Figure 5.

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Figure 5 –The Product’s operation scheme in signal multiplication mode
Active channel may be selected in three ways:
a) Automatic select of active channel;
b) Manual select of active channel;
c) Remote select of active channel.
2.3.2.2 In automatic select mode the Product monitors input information on
«CH1» input. If data is received on «CH1» input, the Product transmits it to eight output
channels. In case of no data on «CH1» input or data transmission breakdown (for exam-
ple, channel breakdown), the Product switches to channel «CH2» in 3 second, in this
case the channel operates as a backup channel. Information from «CH2» input is trans-
mitted to eight outputs; the Product controls data on «CH1». As soon as data reception
on channel «CH1» is restored, the Product automatically switches to it.
2.3.2.3 The Product has a manual select of active channel. It is carried out by
setting jumper on connector «ХР1», see Figure 6.

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Figure 6 –Connector «ХР1»
When jumper is set to position «CH1», input «CH1» is activated forcefully, au-
tomatic switchover to «CH2» does not occur. When jumper is set to position «CH2»,
input «CH2» is activated forcefully, automatic switchover to «CH1» does not occur.
2.3.2.4 Remote select of active channel is a type of manual channel select. To
select this mode, the PCB has a terminal block with three outputs «SELECT», see Fig-
ure 7.
Figure 7 –Terminal block «SELECT»
Three-core cable is connected to this terminal block; closing remote cable out-
puts (for example, using switch), users may select active channel. To select «CH1»,
close «1» and «2», to select «CH2» – outputs «2» and «3».
2.3.3 Independent operation mode
Independent operation mode is used for multiplication of data received via two
input channels at the same time. Therefore, the Product has two groups of input chan-
nels –group A and group B. Each group has two non-isolated outputs and two optoiso-
lated outputs, see Figure 8.

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Figure 8 –The Product’s operation scheme in independent mode
Data received on «CH1» input is transmitted to group outputs А(«AI 1», «AI
2», «A 1», «A 2»), where «AI» – optoisolated outputs, «A» – non-optoisolated outputs.
Data received on «CH2» input is transmitted to group outputs B («BI 1», «BI
2», «B 1», «B 2»), where «BI» – optoisolated outputs, «B» – non-optoisolated outputs.
Using this operation mode, user can receive two independent NMEA signal dis-
tributors format 1×4.
2.3.4 Signal multiplication mode with checksum test
This mode is used to control validity of data received on «CH1»input, see Fig-
ure 9.
Integrated processor calculates checksum of NMEA 0183 sentences received on
«CH1»input; if checksum does not comply, the Product automatically switches to
channel «CH2»in 3 sec. All eight outputs receive data from active input channel.
Caution! The Product does not test checksum received on «CH2» input, as-
suming that backup channel receives correct data

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Figure 9 –The Product’s operation scheme in checksum test mode
To ensure correct decoding of received data, provide pre-configuration of input
signal parameters that are configured using DIP-switches on the PCB.
Configuration of input interfaces parameters is carried out by DIP-switches «SW1»
on the PCB according to Tables 6–8.

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Table 6 –Stop bit configuration
Stop bit
«SW1»position «2»
1
0
2
1
Note –In Tables 6–8 «0» - means “switched off” (OFF), and «1» means
“switched on” (ON).
Table 7 –Parity configuration
Parity
«SW1»
position «3»
position «4»
None
0
0
Even
0
1
Odd
1
0
Table 8 –Baud rate configuration
Baud rate, bit/s
«SW1»
position «5»
position «6»
position «7»
position «8»
1200
0
0
0
0
2400
1
0
0
0
4800
0
1
0
0
9600
1
1
0
0
14400
0
0
1
0
19200
1
0
1
0
28800
0
1
1
0
38400
1
1
1
0
48600
0
0
0
1
56000
1
0
0
1
57600
0
1
0
1
76800
1
1
0
1
115200
0
0
1
1
Note! Output signal parameters comply with input signal parameters

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2.3.5 Alarm principle of operation
Operation principle of alarm is based on voltage output +5 VDC to the line. To
connect external alarm, for example, remote alarm unit AU-106, terminal block
«+5V ALARM»is provided on PCB, see Figure 10.
Figure 10 –Terminal block «+5V ALARM»
If the Product operates from input channel «CH1», constant voltage level is
formed on contact «1». If the Product operates from input channel «CH2», constant
voltage level is formed on contact «2».
Caution! Max. consumption current of external alarm unit on input shall not
exceed 20 mA
2.3.6 The Product settings
The Product default settings are carried out by DIP-switches «SW1»on PCB ac-
cording to Table 9.
Table 9 –MDU default settings
«SW1»
Position
Description
position «1»
0
Not used
position «2»
0
Stop bit: 1
position «3»
0
Parity is switched off
position «4»
0
position «5»
0
Data baud rate (reception / transmission)
4800 bit/s
position «6»
1
position «7»
0
position «8»
0
position «9»
0
Operation mode: signal distribution with active
channel select
position «10»
0
Notes
1 «0» – OFF.
2 «1» – ON.

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The Product software ensures (automatic) reboot if input interfaces settings, op-
eration mode, etc. are changed. Thus, users do not have to switch the Product on or off
in order to apply changes while configuring.
2.3.7 LEDs
LEDs that indicate parameters are located on the PCB, see Table 10 and
Figure 11.
Figure 11 –Layout of LEDs on MDU-102 PCB
Table 10 –LEDs for MDU parameters
№
LED
Description
Data in (input data)
1
«CH1»
Signal on «CH1» channel input, while receiving
data LED is flashing
2
«CH2»
Signal on «CH2» channel input, while receiving
data LED is flashing

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№
LED
Description
Data out (output data)
3
«GRP A»
Output signal on output group «А», while trans-
mitting data LED is flashing
4
«GRP B»
Output signal on output group «В», while trans-
mitting data LED is flashing
Active ch (active channel)
5
«CH1»
Current active channel «CH1», if channel is ac-
tive, LED is glowing
6
«CH2»
Current active channel «CH2», if channel is ac-
tive, LED is glowing
MODE (operation mode)
7
«INDEP»
Independent mode operation; if independent
mode is selected, LED is glowing
8
«CRC»
Operation in checksum test mode; if this mode is
selected, LED is glowing
Note –In signal multiplication mode with active channel select «INDEP» and «CRC» LEDs are not
active.

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3TECHNICAL SERVICE OF THE PRODUCT
3.1 GENERAL DESCRIPTION
The Product’s TS shall be provided by the staff acquainted with its composition,
structure and operation features.
In order to provide safe and reliable operation for the Product, the staff shall
maintain semi-annual TS.
ТS shall be provided by the staff on the running equipment.
3.2 SAFETY FEATURES
While maintaining the TS, observe Ошибка! Источник ссылки не найден..
3.3 MAINTENANCE ROUTINE
List of works by TS types is represented in Table . Maintenance routine proce-
dure is given in CL, represented in Tables 12–13.
The list of works for all types of TS is given in Table 4.
Table 11 –List of works by TS types
CL No.
Work
TS Type
1
Visual check of the Product
+
2
Output data test
+
Note –«+» – work is obligatory.