YOKOGAWA UM33A - Chapter 14 Power Failure Recovery Processing; Power Frequency Setting; Other Settings; 14.1 Remedies if Power Failure Occurs during Operations

14-1
IM 05P03D21-01EN
Power Failure Recovery Processing / Setting Power Frequency / Other Settings
14
14.1 RemediesifPowerFailureOccursduring
Operations
Description
All functions of the indicator cannot be operated for about 10 seconds after recovery.
However, the case of instantaneous power failure is excepted.
• 100–240 V AC: Instantaneous power failure of 20 ms or less
• 24 V AC/DC: Instantaneous power failure of 1 ms
A power failure is not detected. Normal operation continues.
The following shows effects caused in “settings” and “operation status.”
Alarm action
Does not continue. Alarm with stand-by function will enter stand-by status.
Alarm latch will be initialized.
Setting parameter Set contents of each parameter are retained.
The PV peak value and PV bottom value will be reset.
Chapter14PowerFailureRecoveryProcessing/PowerFrequencySetting/OtherSettings