Hitachi RAS-25SX8 - Page 161

– 194 –
Clock signal
0V
Latch signal
0V
Serial signal
0V
Electrical expansion valve 1
①
0V
Electrical expansion valve 1
②
0V
Electrical expansion valve 1
③
0V
Electrical expansion valve 1
④
0V
Electrical expansion valve 1
①
0V
Electrical expansion valve 1
②
0V
Electrical expansion valve 1
③
0V
Electrical expansion valve 1
④
0V
Electrical expansion valve 1
②
0V
Electrical expansion valve 1
③
0V
Electrical expansion valve 1
④
0V
OUT4
Electrical expansion valve 1
①
0V
Pin
#3
, latch signal
0V
Pin
#4
, latch signal
0V
Microcomputer
Pin
#2
, clock signal
0V
Serial signal
0V
500μs.
250μs.
At the end of the drive pattern, 9.75μs.
Stop pattern:9.75ms.
Energization time:500ms. or 25ms. or 12.5ms.
500μs.
Fig. 5-3 Time chart
250μs.
IC12 IC11 IC12 IC11 IC11,12
OUT3 OUT2 OUT1 OUT8 OUT7 OUT6 OUT5 OUT4 OUT3 OUT2 OUT1
Energization time:25ms. or 12.5ms.