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Operation
Version: ECO_M_ENG_220303_E002
5.2. Possible output configurations
ECO offers a variety of possible output configurations, which are defined as follows. A distinction is only made
on the basis of the hardware configurations.
5.2.1. Digital configurations
We refer to the frequency/pulse and NAMUR configurations as digital configurations. With dual-channel
versions (ECO X2), you have the option of outputting the measured sensor signals directly, scaled (up to
approx. 5 kHz) or the direction information. With single-channel versions (ECO X1), only the flow information is
available.
5.2.1.1. Frequency/Pulse (PP, NPN, PNP) – ECO XX-PN-XX-X
A frequency/pulse output is offered, the driver circuit of which can be set via software. (Default: Push-Pull, PP).
The frequency range maps the 1:1 frequency of the calibrated flow meter. Customer-specific parameterizations
for scaled frequencies up to max. 5000 Hz or customer-specific K-factors can also be selected.
Fig 1: Push-pull frequency output with scaled frequency
5.2.1.2. NAMUR Output – ECO XX-NN-XX-X
In this configuration, the frequency/pulse information is available in "NAMUR format". This allows further
information such as short circuit or cable break to be detected. This configuration is not a NAMUR sensor; it
requires a 24 V DC voltage source for operation. The frequency range maps the 1:1 frequency of the calibrated
flow meter. Customer-specific parameterizations for scaled frequencies up to max. 5000 Hz or customer-
specific K-factors can also be selected.
Fig 2: NAMUR output with scaled frequency
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