Unicont SPb DAC-109 User Manual
Unicont SPb Ltd
Digital-Analogue Converter
DAC-109
Technical Documentation
(109-10-23032012)
St. Petersburg
2012
Unicont SPb Ltd Technical Documentation DAC-109
Page 2
Table of Contents
1. PURPOSE ..........................................................................................................................3
2. DELIVERY SET ...............................................................................................................3
3. SPECIFICATIONS ..........................................................................................................3
4. INSTALLATION AND CONNECTION OF THE CONVERTER .............................5
5. VOLTAGE SELECTION ..............................................................................................10
6. PRINCIPLE OF CONVERTER OPERATION ..........................................................13
7. DEBUG TOOLS AND DIAGNOSTIC AIDS ..............................................................18
8. TYPICAL DEFECTS AND METHODS OF TROUBLESHOOTING .....................20
9. WARRANTY ..................................................................................................................22
10. DATE OF PACKING .....................................................................................................23
11. ACCEPTANCE DETAILS ............................................................................................23
12. DATE OF COMMISSIONING .....................................................................................23
Unicont SPb Ltd Technical Documentation DAC-109
Page 3
1. PURPOSE
The digital-analogue converter DAC-109 is intended for converting a digital value of course, which is
received in the sentence NMEA, into the synchro or step signals which are necessary for controlling
analogue repeaters and other devices based on synchro or step repeaters.
In addition, the converter DAC-109 may be used as a digital repeater for displaying a current value of
course.
2. DELIVERY SET
1. Digital-analogue converter DAC-109 1 piece
2. Operation manual 1 piece
3. SPTA
fuse 5 A 5 pcs.
fuse 15 A 1 pcs.
3. SPECIFICATIONS
Electrical Specifications:
Supply voltage: 18..32 VDC
Power supply protection of the converter: against polarity reversal, overvoltage,
overload
Output voltage (for synchro repeaters): Reference – 120 VAC
Reference – 400 VAC*
Output voltage (for step repeaters): Reference – 150 VDC
Maximum total power consumption of connected
synchro or step repeater: 250W/400W
Maximum number of connected synchro
receivers:
8
Frequency of the output alternating voltage: 50 Hz/500 Hz
Types of connected analogue repeaters: Synchro/Step
* - as an option
Characteristics of Digital Inputs:
Number of digital inputs NMEA: 2 x RS-232/422/485 (1 basic + 1
reserve)
Maximum data receive rate: 115 200 Bd
Protection: The inputs are optoisolated,
galvanically isolated from the mains
supply
Supported link protocols: NMEA 0183 versions 1 and 2, with a
check sum and without it
Supported sentences NMEA: HDG, HDT, HDM
Unicont SPb Ltd Technical Documentation DAC-109
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Characteristics of the Remote Control Interface:
Type of Interface: RS-232/422/485
Number of inputs/outputs: 1
Speed of data receive/transmit: 9600 Bd
Number of stop bits: 1
Parity: No
Characteristics of LCD:
Type of display: Character (16 characters x 2 lines)
Displayed data: Accepted value of course from the
signal source NMEA, current position
of analogue repeaters (transformed
value of course)
Control Elements:
Type of keyboard: Membranous
Number of keys: 12 (4 х 3)
Warnings:
Audible warning in case of missing NMEA signal in the basic channel.
Visual warning in case of missing NMEA signal in the basic channel (at LCD).
Output for connection of an external alarm module.
Characteristics of Alarm Output (“Alarm”):
Type of output: Contacting/breaking of “dry” contacts
Maximum voltage, supplied to the output
“Alarm”:
220 V
Maximum allowed current, flowing through the
contacts “Alarm”:
1 A
Possible reasons of alarm response: missing NMEA signal in the basic
channel,
missing input power supply of the
converter
Operating Characteristics:
Overall dimensions: 305 х 305 х 134 mm
Weight: no more than 6 kg
Temperature of operation: -15..+55 °C
Storage temperature: -55..+75 °C
Protection class: IP 22
Unicont SPb Ltd Technical Documentation DAC-109
Page 5
4. INSTALLATION AND CONNECTION OF THE CONVERTER
It is recommended to perform installation and connection of the converter as follows:
a) Select the place for installation of the converter (at the vertical bulkhead or mounting panel) and
prepare mounting holes as per outline drawing (see Figure 1).
b) Install a wire link in the terminal block P21 and connect wires to the terminal block P12
according with needed voltage for analogue repeaters (see section 5).
c) Power on the DAC-109.
d) Set the operating mode of the converter (see section 6), pay attention to setting the correct type
of connected repeaters.
e) Power off the DAC-109.
f) Lead coupling cables from the external devices and power source. Connect cables to removable
terminal blocks in accordance with the type (step or synchro) of repeaters (see Figure 2, Figure
3, Figure 4, Figure 5).
g) Power on the DAC-109.
h) Enter an initial current course at the analogue repeaters (see section 6).
i) If necessary, use the gyrocompass imitation mode and the imitation of cyclical turns of the ship
in order to check workability of the converter and connected repeaters (see section 7).
j) Check workability of the converter.
Warning! If you want to connect ADPC-101 to DAC-109 you shall use special filter FDA-122.
Otherwise ADPC-101 will not recognize synchro signal.
Unicont SPb Ltd Technical Documentation DAC-109
Page 6
Figure 1. Outline drawing of the converter.
Unicont SPb Ltd Technical Documentation DAC-109
Page 7
W
E
NW
SW
SE
N
E
W
E
NW
SW
SE
N
E
Figure 2. DAC-109 connection flowchart.
The diagrams of connection of external devices and Synchro or Step consumers to DAC-109
A
0
IN_1 (NMEA)
B
+
A
0
IN_2 (NMEA)
B
+
RELAY_NO
+-
IN_18-32V
A
0
REMOTE_OUT
0
B
+A0
REMOTE_IN
+ -
U ref
F1 F2
U fase
F3
Alarm Unit
(AU-106)
Main
NMEA
Source
Backup
NMEA
Source
B
+
Remote Control Terminal
G G G
CH_Switch
Switching
Unit
Synchro Repeater
+ - G
IN 18-32 V
18..32 VDC
Fuse
Power on/off
Figure 3. The diagram of connection Synchro consumers to DAC-109
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