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CHANGE DATE/TIME Menu
82
SR2MAN01 11/2007
Clock Calibration The quartz that controls the real-time clock of the smart relay has a variable monthly
drift depending on the environmental conditions of the smart relay.
The maximum value for this drift is approximately one minute per month.
To estimate this drift, proceed by observing the drift on the smart relay clock with
respect to a standard reference clock for a few weeks or more.
Example:
If you wish to compensate this drift, you can for example make a -15 second
correction per week to compensate for a + 60 second drift per month. This
compensation is executed on Sunday at one O'clock in the morning.
Clock
Configuration
Procedure:
Note: This correction serves no purpose if the smart relay is subject to long power
interruptions or major variations in temperature.
Steps Description
1
Select the parameter to modify using the navigation keys and .
Result: The selected parameter flashes.
(When you enter this mode, the day value is selected)
2 Modify the value of the parameter.
The + and - keys of the contextual menu can be used to change the current value.
3 Confirm the changes by pressing the Menu/OK key.
Result: The display returns to the MAIN menu.
Note: The smart relay contains a software module that determines the day of the
week when the user selects the day of the month in the year.
Note: You are not allowed to modify the hour by a product between 2:00 and 3:00
AM for the days of the change from summer to winter time (at 3:00 it is 2:00)