Yokogawa GC1000 Mark II Process Gas Chromatograph - Manual (Page 16)

<Installing the Maintenance Terminal>
9
IM 11B03G03-03E
n Standard Specifications (Communication Converter K9404LA,
K9490LD, RS-232C, Communication cable, Figure, Wiring)
This communication converter converts communications from RS-422 to RS-232C for PC
or DCS communication and shuts off the communication signals when a power-off signal is
received from the analyzer. This maintains explosion-protection on the analyzer side.
l Signal terminal, to the GC1000 Mark II
M4 terminals
1
RS-422 SDA, SDB, RDA, RDB
2 D/I 12 V +, -
l Signal Terminals on the Communication Equipment
M4 terminals
RS-232C D-Sub25 female terminals
l Power supply
100 to 240 V AC ±10%, 50/60 Hz ±5%, 15 W Max., M4 terminals
l Terminal Arrangement (common for K9404LA, K9404LD)
RS-232C
SDA SDB RDA RDB
RS-422 D/I 12V
+ – N L
CN1
CN2 CN3
D-SUB female 25 pins Terminal: M4
from the GC1000 analyzer
AC power supply
F10.EPS
l PC Communication Cable (Straight type)
GND
1
8
3
2
20
7
6
4
5
22
FG
CD
RD
SD
ER
SG
DR
RS
CS
CI
GND
1
2
3
4
5
6
7
8
9 CD
RD
SD
ER
SG
DR
RS
CS
CI
Internal wiring
K9404LA Personal computer
F12.ai
4th Edition : Mar. 21, 2012-00