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
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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.

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2.2.3 Switching the Product on
While connecting the DAC and preparing it for operation follow the steps below:
a) select a place to install the Product (on a vertical bulkhead or mounting panel)
and prepare mounting holes according to the overall dimensions, see Annex A;
b) lead connection cablesfromthe external devices and power supplyunit. Connect
the cables according to Figures 3–5 to the detachable terminal blocks;
Caution! Do not connect analog repeaters beforeproviding the DAC settings!
c) set a jumper on the terminal block (P21) and connect the wires to terminal
block (P12) according to the required voltage for the analog repeaters, see 2.3.1;
d) supply power to the Product;
e) set the operational mode of the Product, focusing on the settings of connected
repeaters type;
f) power OFF the DAC, connect the repeaters and supply power to the Product
again;
g) enter initial current heading on the analog repeaters;
h) use the GYRO imitation mode or the ship’s circulation turn mode to check the
operability of Product and connected repeaters, if necessary;
i) check the Product’s operability.
IN_1 (NMEA) IN_2 (NMEA)RELAY_NO
+-
IN_18-32V REMOTE_OUT REMOTE_IN + -
U ref
F1 F2
U fase
F3
Alarm Unit
(AU-106)
Main
NMEA
Source
Backup
NMEA
Source Remote Control Terminal
G G G
CH_Switch
Switching
Unit
Synchro Repeater
+ - G
IN 18-32 V
18..32 VDC
Fuse Power on/off
B(0) A(+) GND
B(0) A(+)B(0) A(+) B(0) A(+)
Figure 3 –Connection diagram of the external devices to the DAC

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IN_1 (NMEA) IN_2 (NMEA)RELAY_NO
+-
IN_18-32V REMOTE_OUT REMOTE_IN + -
U ref
F1 F2
U fase
F3
Alarm Unit
(AU-106)
Main
NMEA
Source
Backup
NMEA
Source Remote Control Terminal
G G G
CH_Switch
Switching
Unit Positive
R-R+ S1 S3S2
+ - G
IN 18-32 V
18..32 VDC
Fuse Power on/off
B(0) A(+) GND
B(0) A(+)B(0) A(+) B(0) A(+)
Figure 4 –Connection diagram of the stepper repeater, control on minus
B(0)
IN_1 (NMEA)
A(+)
IN_2 (NMEA)RELAY_NO
+-
IN_18-32V REMOTE_OUT
GND
REMOTE_IN + -
U ref
F1 F2
U fase
F3
Alarm Unit
(AU-106)
Main
NMEA
Source
Backup
NMEA
Source Remote Control Terminal
G G G
CH_Switch
Switching
Unit Negative
R-R+ S1 S3S2
+ - G
IN 18-32 V
18..32 VDC
Fuse Power on/off
B(0) A(+)B(0) A(+) B(0) A(+)
Figure 5 –Connection diagram of the stepper repeater, control on plus
2.3 USAGE OF THE PRODUCT
2.3.1 Selection of the Product’s output voltage
Selection of the DAC’s output voltage on the phase and reference channels is
carried out consequently, in two stages:
a) select connection diagram of internal power cable to terminal block (P12) and
set a jumper in the terminal block (P21), see Figure 6.
Set the limit for max. output voltage on the excitation and sync lines in such a
way so that it equals or slightly exceeds the required level;
b)using the menu set an output amplitude of excitation and sync voltage accord-
ing to the repeater’s specifications, as percentage of the limit which was set at the first
stage.

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Figure 6 –Terminals blocks P12 and P21
Caution!WhiledeliveringtheProductthewiresaredisconnectedfromtheterminal
block (P12)!
Example –a user needs to energize synchro-type repeater, excitation voltage
100 V and max. sync 50 V.
Select a connection diagram (P12) and (P21) from Table 7. Select the limit 110 V
to provide repeater’s excitation voltage (equal to 100 V). Select the limit 75 V to provide
repeater’s max. sync voltage (equal to 50 V). Thereby a connection diagram is shown in
line six of Table 7.
To get an excitation voltage, calculate how many percent it makes from max.
value according to the following formula:


  
(1)
where  –required voltage;

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 –maximum voltage
a) using menu set the value of 90%

  ;
b)calculate the repeater’s max. sync voltage likewise and using the menu set the
value of 65%:

  .
The diagrams of jumpers’settings in terminal block (P21) and wires connection
to the terminal block (P12) for different output voltage levels are represented below.
Table 7 –Voltage selection for selsyn type repeaters
Diagram of jumper settings in the terminal blocks
Output voltage
Ref. 0~35 V AC
Phase 0~35 V AC
Ref. 35~75 V AC
Phase 0~35 V AC
Ref. 75~110 V AC
Phase 0~35 V AC
Ref. 0~35 V AC
Phase 35~75 V AC
Ref. 35~75 V AC
Phase 35~75 V AC

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Diagram of jumper settings in the terminal blocks
Output voltage
Ref. 75~110 V AC
Phase 35~75 V AC
Ref. 0~35 V AC
Phase 75~110 V AC
Ref. 35~75 V AC
Phase 75~110 V AC
Ref. 75~110 V AC
Phase 75~110 V AC
Table 8 –Voltage selection for the stepper type repeaters
Diagram of jumper settings in the terminal blocks
Output voltage
Ref. 0~50 V DC
Phase 0~50 V DC
Ref. 50~100 V DC
Phase 50~100 V DC
Ref. 100~150 V DC
Phase 100~150 V DC

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2.3.2 Operation mode of the Product
Once the power is supplied, the DAC transfers to operation mode. In this mode
LCD displays 2 heading values:
a) received heading value from NMEA signal source (e.g., digital gyrocompass);
b)current heading value on the analog signal receivers (e.g., repeaters connected
to the DAC).
In this mode a built-in LCD shows the following information, see Figure 7.
Figure 7 –The Product’s display in operation mode
Display shows two heading values due to response time of the selsyn receivers,
see 1.3.1.
In operation mode a user can access the Product’s settings menu - press [F3] and
unlock the keyboard, see 2.3.6.
2.3.3 The Product’s settings menu
To call the settings menu, press [F3] in operation mode (see 0), see Figure 8.
Figure 8 –Settings menu on the Product’s display
To exit the menu and return back to operation mode, press [F3] (the settings will
be saved).
The upper line shows a parameter to be set. The lower line –current value of this
parameter.
To select a parameter use [▲] and [▼] buttons; change the value of the selected
parameter using [◄] and [►] buttons. To confirm the selected value and save it into the
non-volatile memory, press [Enter].
The Product’s settings and values which may be changed are described below.

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Frequency Choice
Frequency selection of output sine wave analog signal.
Frequencies to select: 50 Hz, 500 Hz.
Ratio Choice
Selection of ratio between ship turn and selsyn rotation of analog receiver.
Ratios to set: 1:36, 1:60, 1:90, 1:180, 1:240, 1:360.
Channel Select
A user can select the main channel to receive heading data in digital NMEA 0183
sentences. Once channel #1 is selected, channel #2 will be used as a backup channel.
Once channel #2 is selected, channel #1 will be used as a backup channel.
Available main channels to select: Channel 1, Channel 2.
Port 1 Settings
Settings of channel #1. To access the settings submenu of the channel #1 press
[Enter].
Available settings for each channel (#1 and #2) are shown in Table 9.
Table 9 –List of channel settings
Port settings
Value to be selected
Baudrate
4800, 9600, 14400, 19200, 28800, 38400,
57600, 115200
Parity
No, Even, Odd
Stop bits
1, 2
CRC Checking
On, Off
Once CRC Checking parameter is set to «On», the Product tests a checksum of
input NMEA sentences. If the checksum test does not comply with an estimated one (i.e.,
the sentence was received with errors), the Product ignores the received data.
Do not switch this option if NMEA signal sources of version 1 are connected, as
the sentences of this NMEA version do not provide retransmitting of checksum.
When a parameter is changed press [Enter] to save the selected value. To exit the
submenu, press [F3].
Port 2 Settings
Setting of the channel #2. See «Port 1 Settings».

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Backup Channel
If the data are absent on the main channel, the Product switches to the backup
channel. If the backup NMEA signal source is not connected, set the parameter to «Off».
Values to be selected: On, Off.
Alarm Sound
If an input NMEA signal is absent on the main channel, the product activates a
sound alarm.
Values to be selected: On, Off.
Alarm Period
To select a period of time after which the sound alarm activates; if the data are absent
on the main channel the Product switches to the backup channel.
Values to be selected: 2, 3, 4, 5, 6, 7, 8, 9, 10 sec.
Repeater Type
To select a type of repeater.
Values to be selected: Stepper, Synchro.
Ref. Voltage
To select voltage amplitude (from max.) on reference winding.
Values to be selected: 100%, 95%, 90%, 85%, 80%, 75%, 70%, 65%, 60%, 55%,
50%, 45%, 40%, 35%, 30%, 25%, 20%, 15%, 10%, 5%.
Phase Voltage
To select voltage amplitude (from max.) on phase winding.
Values to be selected: 100%, 95%, 90%, 85%, 80%, 75%, 70%, 65%, 60%, 55%,
50%, 45%, 40%, 35%, 30%, 25%, 20%, 15%, 10%, 5%.
2.3.4 Alarm signaling
TheDACensuresseveralalarmtypesincaseof: dataareabsentonthemainchannel;
data are absent on the backup channel; data are absent on the main and backup channels;
connection to synchro-receiver is absent; initial position ofconnected analog repeaters is not
entered; see Table 10.

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Table 10 –Possible malfunctions and indication of the Product’s operation status
Malfunction
Sample of indicator status
RELAYoutput
contacts
Sound alarm*
Initial position of ana-
log repeaters is not en-
tered
Closed
0.2/1
Data are absent on the
main channel
Closed
0.2/1
Data are absent on the
backup channel
Opened
0.5/5
Data are absent on the
main and backup chan-
nels
Closed
0.2/1
* Length of sound pulses / sound pulse repetition period is listed for the sound alarm.
Note –To mute sound alarm, press [F2]. At the same time visual alarm continues
operation, RELAY output contacts are not opened until the data reception is restored on
the main channel.
2.3.4.1 Alarm if data are absent on the main channel
If the Product does not receive heading data on the main channel during the time
preset in «Alarm Period» (see 2.3.3), the sound alarm activates; and if «Backup Channel»
is set to «On» the Product’s switches to the backup channel of NMEA data reception.
Current alarm status is shown on the Product’s display in the operation mode (see
Figure 9).
Figure 9 –Alarm status in the operation mode on the display
Visual alarmof data absence (initial positionof analog repeaters is not entered) is rep-
resented on the display in the following way (see Figure10).
Figure 10 –the Product’s display when initial position data of analog repeaters are absent

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If NMEA heading data are not received on the backup channel, the display shows
the following (see Figure 11).
Figure 11 –Display of no heading data
If data reception is restored on the main channel, sound alarm deactivates and the
Product switches to the main channel.
Once the alarm activates (a transfer to the backup channel), RELAY output chan-
nels also close.
2.3.4.2 Alarm of no data on the backup channel
If «Backup channel» is set to «ON», the DAC controls data reception on the
backup channel. If data are absent on the backup channel, «!» appears on the display’s
upper line to the right of heading which is received on the main channel (see Figure 12).
Sound alarm also activates (signal length 0.5 seconds every 5 seconds). RELAY output
contacts are not closed.
Figure 12 –Display of no data on the Product’s backup channel
2.3.4.3 Overload alarm
Once the Product’s output is overloaded (e.g., «short circuit»), the DAC automati-
cally cuts off signal forming unit to prevent the circuits and connected equipment fromdam-
age. The display shows «Overload protection». To restart the Product a user shall remove
the cause of overload and then restart it.
2.3.5 Input of analog repeaters’ initial position
Once the DAC is switched on, connected analog repeaters are considered to dis-
play heading «0°» by default. If another value is displayed, a displacement (equal to this
value) occurs during heading conversion. To prevent this effect the DAC ensures an input
of initial position of connected repeaters.
To enter an initial position of analog repeaters provide the following steps: