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Communication channels
- The EMA-D6 supports a maximum of 2 RS-485 communication channels (COM1 and COM2) and a maximum of 1 Ethernet port.
- The communication channels are completely independent and can communicates at the same time.
Daisy-chaining devices to the network analyzer
The RS-485 slave port allows the network analyzer to be connected in a daisy chain with up to 32, 2-wire devices. See Figure below.
Setpoint thresholds
- The setpoint thresholds are internal variables whose status depends on the out of limits of one particular measurement set by user among all those measured
(example: active power higher than 40 kW).
- For each setpoint, there are 2 thresholds (upper and lower). The upper threshold must always be set toa value higher than the lower threshold.
- For every setpoint is possible to set a delay when alarms is triggered on and off.
- When specific conditions are met, alarms is turned on or off. Triggering of alarms can be registered in the devices notifications log, in the events section, increasing
timer. In addition to that, they can be set up to control digital outputs of the device.
- There are two types of setpoints available on EMA-D6: simple setpoint and
“
complex
”
condition to a setpoint using Boolean logic variables (AND, OR).
- For setpoint thresholds programming and definition refer to setup menu SETPOINT chapter.
For more information on how the meter handles the setpoint-driven alarms, refer to the figure below.
Data logger function
- The data logger allows to store at regular interval up to 14 variables chosen freely among the multimer measures.
- Every record is marked with a timestamp taken from the internal real-time clock. The minimum sampling period (distance between two records) is of 1 second.
- Considering the amount of memory, the number of variables to be stored and sampling period, the unit indicates the time that must elapse before the memory is
completely filled.
- The recording can be continuous (driven only by regular time intervals) or conditional (between a specified date/time range), driven only by the status of the internal
variables (setpoint) or digital input status.
- When the memory is full, the user can choose to stop the recording (End Memory mode) or to continue overwriting the oldest records (FIFO mode).
- The display page dedicated to the data logger info (MENU - INFO - LOG SUMMARY) shows all the fundamental information: number of records, sampling,
available free memory, residual time before the memory if filled (when working in End Memory mode).
A
The measurement monitored by setpoint.
B
Trigger delay.
C
The alarm is turned on.
D
The alarm is turned off.
Upper threshold
Lower threshold
Hours
Recording status
Sampling period
Percentage of used
memory
Time left before end
of memory
expressed in days
hh:mm