LSIS XGT Series - Instantaneous Power Failure Protection Function

Chapter 10 CPU Function
10-24
(4) How to detect the external device’s minor failures
The following programming is used to detect the external device’s minor failures.
(a) Save the error code that can be distinguished by external device’s serious failures in %FW1282
(_ANC_ERR) through the MOVE command as below. (Input the values excluding 0)
(b) In case the external device’s minor failures occur, %FX20483( _CHK_ANC_ERR)flag will be On.
(c) When the main task program is completed, the motion controller checks whether %FX20483
(_CHK_ANC_ERR) is ON and detects serious failures.
(d) If the external device’s minor failures occur, %FX134( _ANNUM_WAR)flag will be ON and continue to
operation. Then, %FX20483 (_CHK_ANC_ERR) is automatically Off.
(e) When minor
failures occur, through XG5000, a user can figure out the causes of failures by
monitoring %FW20483(_ANC_WAR)flag.
(d) If you input 0 again to %FW1283(_ANC_WAR) after removing the causes of failures and turn
ON%FX20483 (_CHK_ANC_WAR) again, detection of minor failures is canceled.
10.3.6 Instantaneous Power Failure Protection Function
Instantaneous power failure is detected when the input power voltage supplied to the motion controller
becomes lower than the standard.
If the instantaneous power failure is detected, the following operation processing is performed.
Power Failure Time
Operation Processing
Input
power
Instantaneous power
Within 20ms
1. If the instantaneous power failure occurs for the first time, the internal
timer starts, and the operation is performed (without stopping) as
before.
2. If the instantaneous power failure is canceled (within 20ms of the
reference time), the internal timer start-up is stopped, and the operation
is performed as before.
Input
power
Instantaneous power
Over 20ms
1. If the power is not supplied during the excess of 20ms after the first
occurrence of the instantaneous power failure, restart operation is
performed in the same way as the power input.
Notice
Instantaneous power failure refers to the state where the voltage of the power supply specified by the motion
controller in the power condition is lowered as it exceeds the allowable fluctuation range, and the power failure
for a short time (several ms to dozens of ms) is called instantaneous power failure.