Siemens SICAM, Руководство пользователя, Страница: 55 / 174

- or -
²
Alternately, auto calibration can be done by turning on the Modbus coil Address 9.
[dw_sfcmdevautocalib, 1, en_US]
Figure 4-23 VDS Device Auto Calibration
²
Press OK to start the auto calibration.
The auto calibration takes about 60 s to complete.
The following dialog appears:
[dw_sfcmdevautocalib_msg, 1, en_US]
Figure 4-24 Device Auto Calibration
Energy Measurement
The device provides counters in the Modbus registers to acquire the following data:
•
Active import energy
•
Active export energy
•
Reactive import energy
•
Reactive export energy
The values are kept when the device is powered off or in sleep mode. The counter starts incrementing from
the last stored value once the device is powered on.
For more information about these counters, refer to
3-Phase Active Import Energy Counter, Page 139 .
The counter value can be reset by any one of the following methods:
•
Using the Energy counter reset parameter via HMI
•
Using the Energy counter reset Modbus register. For more information, refer to Table B-10 .
RTC Synchronization
The device provides an internal real-time clock. In order to get an external time synchronization, the device
must be synchronized with the Modbus master with the current system time. The real-time clock must be
synchronized at least once a day for a valid time stamp.
The device needs a time synchronization, when it resumes from the sleep mode to ensure the correct time and
date. Also the time synchronization is required when the device is powered on after 8 hours of sleep mode.
4.1.33
4.1.34
Device Functions
4.1 Description
SICAM, Feeder Condition Monitor, Manual 55
E50417-H8940-C580-A4, Edition 03.2019