ELM360x overview measurement ranges
For an explanation of the terms AC and DC, refer to the chapter "Analog notes ‑ dynamic signals".
The input channels can be operated in principle in the operation mode AC coupling or DC coupling, see chapter "IEPE AC Coupling":
- AC coupling: the arbitrary input signal is fed via a high-pass filter, after which only the corresponding alternating component (AC) remains for the digital processing inside the terminal.
- DC coupling: the arbitrary input signal is digitally processed "as it is", irrespective of whether or not it has an alternating component (AC).
Notice | |
Reference to GND The ELM360x can measure with respect to GND in the range of -5 V...+21.5 V. |
Measurement | Connection technology | FSV | Mode | Maximum value/ value range |
|---|---|---|---|---|
Voltage | 2 wire | ±10 V 1) | Extended | ±10.737.. V |
Legacy | ±10 V | |||
±5 V | Extended | ±5.368.. V | ||
Legacy | ±5 V | |||
±2.5 V | Extended | ±2.684.. V | ||
Legacy | ±2.5 V | |||
±1.25 V | Extended | ±1.342.. V | ||
Legacy | ±1.25 V | |||
±640 mV | Extended | ±687.2.. mV | ||
Legacy | ±640 mV | |||
±320 mV | Extended | ±343.6.. mV | ||
Legacy | ±320 mV | |||
±160 mV | Extended | ±171.8.. mV | ||
Legacy | ±160 mV | |||
±80 mV | Extended | ±85.9.. mV | ||
Legacy | ±80 mV | |||
±40 mV | Extended | ±42.95.. mV | ||
Legacy | ±40 mV | |||
±20 mV | Extended | ±21.474.. mV | ||
Legacy | ±20 mV |
1) The input voltage must not fall below -5 V with respect to GND, the measuring accuracy is then no longer given. This means a measurement down to -10 V with respect to GND is only possible if at the same time an offset of at least +5 V is applied, as is usual with IEPE supply.
Measurement | Connection technology | FSV | Mode | Maximum value/ value range |
|---|---|---|---|---|
Voltage | 2 wire | +10 V | Extended | 0…10.737.. V |
Legacy | 0…10 V | |||
+20 V | Extended | 0…21.474.. V | ||
Legacy | 0…20 V |
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Note: In Extended Range Mode the Underrange/Overrange display in the PDO status has the character of an information/warning when the nominal measuring range is exceeded, i.e. no Error is displayed in the PDO status and LED. If the technical measuring range is also exceeded, Error = TRUE is also displayed. The detection limit for Underrange/Overrange Error can be set in the CoE. In Legacy Range mode, an Underrange/Overrange event also leads to an Error in the PDO status. |