Comet U0110, User Manual

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IE-LGR-Uxxxx-16
U6841
Datalogger with 3 inputs 0 - 20 mA
and 1 binary input
This model is used to measure up to three signals
from current loops (0 to 20) mA DC while allowing one
binary input to be monitored. The current inputs are
passive and are not galvanically isolated from one
another. This means that the connected sensors
cannot
be powered by the current loop and the negative
terminals ("-") are connected to each other. These facts
must be taken into consideration when designing
the device into the circuit. Incorrect connection may
cause degradation of the measured values. Standard
outputs (4 to 20) mA can also be measured with current
inputs without any problems.
Binary input serves to monitor voltage signals or signals
coming from a dry contact. The binary input changes are
registered immediately, irrespectively of the recording
interval setting. To safe record the input status, the signal
must be present for at least 1 s. This input can capture
connected/disconnected voltage status.
Input signals are connected to a pluggable terminal
block. The
device’s ingress protection is IP 20. Due to its
low ingress protection the device is not suitable for using
in dusty rooms or rooms exposed to water ingress.
The maximum length of the input wires should not exceed
30 m. It is recommended to use shielded cables.
The battery in the device cannot be charged.
Connection:
The procedure for connecting the wires to the terminals
can be found in
Annex 4 .