Hitachi WJ Series User Manual page 378

Chapter 14
Input status
[ST1]
[ST2]
Failure
detection
00
01
02
[b145] 03
04
05
06
Event
e1
e2
e3
e4
e5
■ State transition diagram (b145:00)
① ②
Close Open
Close Close
None
- -
- E37
- E98
- -
- -
- -F01 or -F20
- -F01 or -F20
Definition of event
Input status becomes ①
Input status becomes ② or ③
Input status becomes ⑤
Input status becomes ④
Input status is held more than the time set in "STO release
delay allowed time [b146]".
This event does not exist except for [b145] = 05.
e1
③ ④
Close Open
Open Open
- -
E37 E37
E98 -S--
- -S--
- -S--
-F02 or -F10 -S--
-F02 or -F10 -S--
Description
Normal
e3
operation
Internal failure
e1
e3
e2
e4
e2
STO
[Display]
e4
No status
indication
14-1-5
Safety Function STO
⑤
Open or Close
Open or Close
Detected
E99
E99
E99
E99
E99
E99
E99
[Display]
[E99]
e3
STO
[Display]
No status
indication