MSA DAC-109 User manual

“NPK Morsvyazavtomatica”LLC
26E, Kibalchicha St., St Petersburg Tel.: [phone] [email protected]
Russia, 192174 Fax: [phone] www.unicont.com
COURSE TRANSLATOR
DAC-109
Operating manual

Operating manual
2
TABLE OF CONTENTS
INTRODUCTION.........................................................................................................................3
1DESCRIPTION AND OPERATION OF THE PRODUCT...............................................4
1.1 Description............................................................................................................................4
1.2 Main technical specifications................................................................................................4
1.3 Description and operation of the Product..............................................................................6
1.4 Measurement instruments, tools and appliances...................................................................7
1.5 Marking and sealing..............................................................................................................8
1.6 Packaging..............................................................................................................................8
2USAGE OF THE PRODUCT................................................................................................9
2.1 Operational constraints..........................................................................................................9
2.2 Usage preparations of the Product ........................................................................................9
2.3 Usage of the Product...........................................................................................................11
3TECHNICAL SERVICE OF THE PRODUCT.................................................................22
3.1 General description .............................................................................................................22
3.2 Safety features.....................................................................................................................22
3.3 Maintenance routine............................................................................................................22
3.4 Preservation.........................................................................................................................23
4CURRENT REPAIR OF THE PRODUCT........................................................................24
4.1 General description .............................................................................................................24
4.2 Safety features.....................................................................................................................24
4.3 Current repair of the Product...............................................................................................24
5STORAGE.............................................................................................................................26
6TRANSPORTATION...........................................................................................................27
7DISPOSAL.............................................................................................................................28
ANNEX A (MANDATORY) TECHNICAL DESCRIPTION OF THE PRODUCT.........29

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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 Course Translator
DAC-109 (hereinafter referred to as the Product, the DAC).
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 PSU according to the applicable
regulations.
Terms and abbreviations:
UCB-91
Remote control unit UCB-91
AU-106
Alarm unit AU-106
GYRO
Gyrocompass
LCD
Liquid-crystal display
SPTA
Spare parts, tools and accessories
ED
Engineering documentation
КР-124
Distribution unit KP-124
LFSG
Large fine-pored silica gel granular
OM
Operating manual
CL
Check list
DAC
Course Translator DAC-109
TS
Technical service
NMEA (National Marine Electronics Association) – is a communication
protocol for interconnection of marine (normally navigational) equipment.
Selsyns –DC electric self-synchronous microcomputers (for smooth
remote transmission of shaft’s rotation angle).

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1DESCRIPTION AND OPERATION OF THE PRODUCT
1.1 DESCRIPTION
The Product converts digital heading data received in NMEA format into syn-
chrosignals required to control analog repeaters and other selsyn-based equipment.
The DAC may be used as a digital repeater to display the current heading data.
1.2 MAIN TECHNICAL SPECIFICATIONS
1.2.1 Technical specifications of the Product are represented in Table 1.
Table 1 –Technical specifications of the Product
Parameter
Value
Electrical specifications
Input voltage, V DC
24 (18…36)*
Protection
reverse polarity
Output voltage, V AC
Vref** –120
Max. total power consumed by connected
selsyns, W
250
Maximum number of connected syn-
chro-receivers
8 (through КР-124)
Frequency of output voltage, Hz
50 or 500
Types of connected analog repeaters
synchro / step
LCD specifications
Type of display
symbol (16 symbols×2 lines)
Displayed data
–received heading value from NMEA signal source;
–current position of analog repeaters (converted
heading value)
Controls
Type of keyboard
Membrane
Number of keys
12 (4×3)
Alarm
Sound alarm if NMEA signal is absent on the main channel
Visual alarm if NMEA signal is absent on the main channel (on the LCD)
Output to connect external alarm unit AU-106
«Alarm» output specifications
Output type
closing (opening) of dry contacts
Maximum voltage supplied to «Alarm»
output, V
220
Max. permissible current, passing through
«Alarm» contacts, А
1
Possible reasons for alarm actuation
–NMEA signal is absent on the main channel,
–input power supply is absent

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Parameter
Value
Operating specifications
Operating temperature, °C
–15…+55
Limiting temperature, °C
–60…+70
IP rating
IP22
*The range of power supply voltage is represented in brackets.
** Electric voltage relative to which another voltage is counted.
1.2.2 Additional units may be connected to the Product. Technical specifica-
tions of the units are represented in Tables 2–4.
Table 2 –Technical specifications of the КР-124
Parameter
Value
Number of inputs / outputs
1 input, 7 outputs
Max. voltage, V
250
Max. current, А
5
Table 3 –Technical specifications of the UCB-91
Parameter
Value
Input voltage, V DC
24 (9…36)*
Power consumption, W
3
Max. current, А
5 A
Number of inputs (outputs)
2×RS-422/485
Reception / transmission rate, bit/s
9600
Stop bits
1
Parity
no
Mounting
wall
* The range of power supply voltage is represented in brackets.
Table 4 –Technical specifications of the AU-106
Parameter
Value
Input voltage, DC, V
24 (9…36)*
Max. output power, W
2, max.
Consumption current on «Relay» input ,
mA
5, max.
Number of inputs
1
Built-in protection
reverse polarity
IP rating
IP22
Operating temperature, ºС
–15…+55
Mounting
panel or wall
* The range of power supply voltage is represented in brackets.

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1.3 DESCRIPTION AND OPERATION OF THE PRODUCT
1.3.1 Description
The Product receives digital heading value from NMEA 0183 signal sources and
converts it into output sine-wave voltage in order to connect selsyn-receiver windings.
Herewith the amplitude of oscillations is set up in such a way that the selsyn-receiver will
take a position according to the received digital heading value.
Structural diagram is represented in Figure 1. Since the selsyn-receiver rotation
takes some time, which is defined by a number of required rotations (if selsyn rotation to
ship turn ratio is different from 1:1) and rotor response time of selsyn-receiver, change of
heading on the connected analog repeaters does not occur immediately, but gradually.
Both headings (received and converted) are represented on the display. In case the DAC
has not displayed the heading value received before on time and has alreadyreceived new
value, it starts processing new received heading value. In other words, the DAC always
displays the last received heading value on the selsyn-receivers.
Figure 1 –Structural diagram of DAC heading converter

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1.3.2 Controls and indication LEDs
The Product is produced in a metal casing, where LCD, keyboard, piano type
switch (ON / OFF), controls and LEDs are located, see Figure 2. For the description of
the controls and LEDs, see Table 5.
Figure 2 –Layout of the Product’s functional elements, controls and LEDs
Table 5 –Description of the Product’s functional elements, controls and LEDs
№
Element
Type, name
Description
1
Piano type switch
«О/1»
To switch ON / OFF the Product, light indication (LED)
of power
2
LCD
–
To display received and current ship’s headings
3
Keyboard
–
To edit parameters and enter heading data
1.4 MEASUREMENT INSTRUMENTS,TOOLS AND APPLIANCES
Consumables required for the TS are represented in Table 6.

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Table 6 –Amount of the consumables required for the TS
Name and identifier of consumables
Amount of consumables
Note
Cleaning cloth
0.10 kg
To clean contamination from the
surfaces
Rectified hydrolytic technical ethyl alcohol
0.01 l
1 To clean severe contamination
from the surfaces
2 To clean surfaces of the Product
in case of paint coating damage
Varnish
0.05 kg
To cover surfaces of the Product in
case of paint coating damage
Abrasive cloth
0.06х0.06 m
To polish surfaces of the Product
in case of paint coating damage
1.5 MARKING AND SEALING
The nameplates displaying a serial number, date of manufacturing, weight, pro-
tection degree, power supply voltage and power consumption are located on the Product.
The sealing of the Product and package is not provided.
1.6 PACKAGING
The Product is packed in a corrugated board box and inner packaging (cardboard)
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 the package is not provided.

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2USAGE OF THE PRODUCT
2.1 OPERATIONAL CONSTRAINTS
The Product shall have a reliable grounding; all cables shall be insulated.
The Product’s installation shall be provided in accordance with overall and instal-
lation dimensions.
Select the installation site in compliance with operational constraints (operating tem-
perature and protection code –IP).
2.2 USAGE PREPARATIONS OF THE PRODUCT
2.2.1 Safety features
Before using the Product follow the steps below:
–train staff to use the Product and checkout equipment, as well as occupational
safety applicable in the field;
–show the staff ground places of the Product and check reliable grounding;
–only use fuses from SPTA kit;
–switch the power off before disconnecting cables and replacing fuses;
–follow “Rules for Operation of Customers' Electrical Installations” and “Safety
Rules for Operation of Customers' Electrical Installations” while testing electrical circuits
and insulation resistance of the Product.
2.2.2 Visual check procedure
Before switching the Product on a user shall:
–observe visually the cable integrity and initial position of the controls on the
front panels;
–check the absence of dust and dirt on the Product casing; clean with a soft cloth
if necessary;
–check reliability of cable connections to the Product.