Yaskawa MP920 User's Manual Design - Manual (Page 81)

3.2 Start and Stop Sequences
3-7
3
„ MP920 Start Sequence and Basic Operation
* The time for momentary power loss is defined on the MPE720 System Definition Window.
Power ON
Test mode switch
= Test mode
Offline self-diagnosis
= Normal mode
Program
memory check
Program data:
Memory clear
Read calendar
(current value)
Time of power
failure
= 10 ms to n s * (momentary power loss)
Designated start
Report power failure
≥ n s (power failure) *
= New
Defined on the MPE720
System Definition Screen
Calculated from time of
power failure and time of
power restoration
= Not damaged
= Damaged
Report continuous
operation
= Continuous = Continuous
Designated start
Report power loss
Report continuous
operation
Start mode
= Continuous
= New
Startup self-diagnosis
I/O output
(power failure data)
Detect RUN switch
Report new operation
= New
Interrupt signal
Start watchdog timer
Execute DWG.A
End after one execution
Execute DWG.I
Input
Execute DWG.L
Output
Low-speed
scan
Input
Execute DWG.H
Output
High-speed
scan
Online self-diagnosis
Ground