23.5.3.2 DCU Board
The DCU is a combination of two processor based boards. The
16-bit processor of the DCU Board acts as a host for the SMU and
handles all of the outside communications. There are three com-
munication channels available in the unit besides of the SMU
serial channel, which is no more visible to the user. The SMU
serial channel is in this installation directly handled by the DCU
processor via an optocoupler.
DCU layout
The serial channels from the DCU are CAN, 2-wire RS-485 and
RS-232C communications links. Two internal CPU serial chan-
nels are used for serial communications through the 2-wire
RS-485 and the internal SMU Board. In addition there is one PC
Card type II slot for SRAM and FLASH memory cards.
The DCU Board converts all the required operating voltages (+5
V, +12 V) for itself from the floating 7 V level, which is fed from
the SMU’s isolated switching power supply. This makes the whole
DCU board float from the SMU electronics.
58
F2
24
STATUS
46
12
38
CH1C
37
36
35
CH1E
CH1H
CH1L
39
CH3E
5
1
3
2
4
CH0C
CH0E
CH0L
CH0H
CH2E
44
CH5H
43
42
41
CH3H
CH3L
CH3C
CH5E
45
CH5L
40
11
6
10
9
8
7
CH2H
CH2C
CH4E
CH4H
CH2L
CH4L
52
CH9H
18
CH8H
50
CH7C
48
47
CH7H
CH7E
49
CH7L
51
CH9E
CH5C
17
14
13
15
16
CH8E
CH6E
CH6H
CH4C
CH6L
CH6C
56
55
18V+
IOUT
53
CH9L
54
CH9C
57
F1
23
22
21
19
20
G5
G6
G7
AGND
CH8L
CH8C
62
61
RXD
TXD
GND
59
GND
60
64
SRD-
63
SRD+
30
29
27
25
26
28
G0
G2
G4
G3
G1
GND
66
67
68
DC-O
DC+O
RD-O
65
RD+O
31
34
32
33
RD+I
DC-I
RD-I
DC+I
Fig 23-24
080304E9525
32-200115/II
Instrumentation and Automation
23
WÄRTSILÄ 32
23-31
Содержание PAAE051728
Страница 4: ......
Страница 18: ...Appendix B Welding Precautions 200640 00 6...
Страница 26: ...01 Main Data Operating Data and General Design 32 200634 01 01 8 W RTSIL 32...
Страница 60: ...Appendix A Environmental Hazards 200507 02A 10...
Страница 68: ...Page 7 7 Document No 4V92A0645 Rev j...
Страница 84: ...03 Start Stop and Operation 32 200402 04 03 12 W RTSIL 32...
Страница 98: ...04 Maintenance Schedule 32 200623 01 04 14 W RTSIL 32...
Страница 154: ...07 Tightening Torques and Use of Hydraulic Tools 32 200643 01 07 30 W RTSIL 32...
Страница 162: ...08 Operating Troubles Emergency Operation 32 200402 01 08 8 W RTSIL 32...
Страница 164: ...Specific Installation Data 2005 01 09 2...
Страница 178: ...10 Engine Block with Bearings Oil Sump and Cylinder Liner 32 200150 10 14 W RTSIL 32 34SG...
Страница 216: ...Appendix A Testing of cylinder tightness 32 200142 A 4 W rtsil 20 32 34...
Страница 226: ...13 Camshaft Driving Gear 32 200546 02 13 10 W RTSIL 32...
Страница 253: ...U tube manometer Fig 15 12 401508200050 32 200549 10 Turbocharging and Air Cooling 15 W RTSIL 32 15 19...
Страница 254: ...15 Turbocharging and Air Cooling 32 200549 10 15 20 W RTSIL 32...
Страница 274: ...16 Injection System 32 200627 01 16 20 W RTSIL 32...
Страница 280: ...Fuel System 32 200508 07 17 6 W RTSIL 32...
Страница 314: ...19 Cooling Water System 32 200050 19 14 W RTSIL 32...
Страница 394: ...23 Instrumentation and Automation 32 200115 II 23 60 W RTSIL 32...