FANOX SIA D, Руководство пользователя, Страница: 39 / 117

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SIA-D_
Rev. 07
39 / 117
ISO 9001:2008
5. MONITORING AND CONTROL
5.1. Measurements
Measurements of the three-phase currents and the neutral current are given in RMS. A sampling of
16 samples/cycle is performed.
The accuracy of the measurement is ±2% over a band of ±20% of rated current and ±5% over the
rest of the measurement range.
•
Frequency 50 Hz or 60 Hz rated. ± 3 Hz
•
Thermal resistance Twice the continuous rated current
5.2. Status and Events
The status is given by real-time information generated by the equipment. Some statuses have an
event associate with them, which is a register of a change made to the status. There are statuses
that have an activation event associated with them, and other statuses have two associated events:
activation and reset. These events are registered in a circular memory (buffer) with a capacity for up
to 500 events. The memory timestamp is accurate to 1 millisecond.
On the models list can be found the following options related to events:
•
Without memory
•
With FRAM non-volatile memory
•
With FRAM non-volatile memory and RTC
•
With FRAM non-volatile memory with events and oscillography
•
With FRAM non-volatile memory and RTC with events and oscillography
With the option "Without Memory", the equipment has events, but these events are lost in the case of
power failure.
With the option "With non-volatile FRAM memory", both the events are conserved even if the
equipment is not powered. If the Real Time Clock is used, the relay keeps and processes the correct
date and time, even without electrical power, for up to 72 hours.
The events can be browsed from the HMI or by using communications. Reading the events does not
mean that they get deleted, they remain stored on the equipment. To delete the events using the
HMI, you have to go to the events menu and press and hold the "RESET" key until the number of
events reads 1, and this event is registered as "Events deleted". To delete the events using
communications, use the corresponding "delete events" command.
Events have the following structure:
Identify
Unique event identifier: e.g.: 51_1.4 = 51P START
Value
ON(Activated) /OFF(Deactivated): an event is generated for activations and deactivations
Year
Month
Day
Time
Minutes
Seconds