YOKOGAWA EML500 Series, User Manual, Page: 71 / 85

A-2
IM80B80T10E 21th Edition : Jul.1,2007-00
< Appendix >
Appendix 2 : Master Unit Block Diagram
9 10 29 30 19 20 7 8 27 28
17 18 23 24 25 24 25 26 21 22 23 26
1 2 11 12 1 2 11 12 7 8 9 10 27 28 29 30 3 4 5 6 13 14 15 16 3 4 5 6 13 14 15 16 9
1 2
10
13 14 15 1 2 3 6 7 8 4 5 11 12
2P 2P 2P
4P 4P
V/I CONV. V/I CONV. V/I CONV. V/I CONV.
NMEA0183 DRIVER
RELAY
PHOTO COUPLER
BUFFER
BUFFER
BUFFER
BUFFER
RAM
ROM
CPU
WDT
RST
SIO SIO PIO PIO
I/O DECORDER
MPX
CTC
M.
I/O I/O
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
FILTER
OPTION
TB4
DC24V
AGND
+5V
+15V
−15V
J12
J22
J21
J11
DECODER
DECODER
1 Chip CPU
DATA BUS
ADRS BUS
BUFFER
LATCH
DRIVER
+15V
DIG.SW
DIP.SW
I/V CONV. I/V CONV.
1 2
3 4
5
TB1
TB3
TB3 TB1 TB1 TB1 TB1 TB3 TB3 TB2
Sample hold Sample hold Sample hold
Sample hold
D/A CONVERTER
reference voltage
5V
SWITCHING POWER SUPPLY
SWITCHING POWER SUPPLY
Current output for analog speed 0mA to 20mA 4ch Voltage output for analog speed 0V to 5V 2ch
indicator output 2ch indicator input 1ch NMEA0183 output 2ch NMEA0183 input 1ch Current output for speed (relay) 2ch Limit contact output for speed (relay) 2ch Alarm contact output for speed (relay) 2ch Sensor signal input (X / Y direction) Contact output for speed (
photo coupler
)
4×2 ch
24V POWER SUPPLY
From sensor From master indicator From speed indicator
±15V POWER SUPPLY SYSTEM POWER SUPPLY (100V to 220V)
COMPARATOR
+15V
–15V