Mitsubishi Electric Q12DCCPU-V - Operation Processing During Momentary Power Failure; When Momentary Power Failure Time Is Within the Allowable Range

3
SPECIFICATIONS
3.4 Operation Processing
3.4.4 Operation processing during momentary power failure
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1
OVERVIEW
2
SYSTEM CONFIGURATION
3
SPECIFICATIONS
4
FUNCTIONS
5
ACCESS VIA NETWORK MODULES
6
PREPARATORY PROCEDURES AND SETTING
7
I/O NUMBER ASSIGNMENT
8
MEMORIES AND FILES
3.4.4 Operation processing during momentary power failure
The C Controller module detects a momentary power failure when the input power voltage
supplied to the power supply module falls below the specified range.
On detection of a momentary power failure, the following operation is performed.
(1) When momentary power failure time is within the allowable range
When a momentary power failure occurs, the output status is held and the operation
stops.
After power is restored, the error information is registered to the event history file.
(The initial time only)
(a) Confirming the number of detections
The C Controller module counts how many time momentary power failure has
been detected and holds the data.
The number of momentary power failure detections can be confirmed by the
QBF_ReadStatusEx function.
(b) After recovering from a momentary power failure
The operation processing is resumed when the module recovers from a
momentary power failure.
(2) When power failure lasts longer than the allowable momentary power
failure time
Initial start is needed for the C Controller module.
The same operation processing as the one of the following is performed.
• Powering on the C Controller system
• Resetting by the RESET/SELECT switch
• Remote resetting by C Controller setting utility or QBF_Reset function
Q12DCCPU-V
Q06CCPU-V
Q06CCPU-V-B