SICK EuroFID, Operating Instructions Manual

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64 EuroFID · Operating Instructions · 8011094 V2.3 · © SICK AG
Installation of the Operating Unit
6.3.5
Switching outputs (threshold value alarm, status)
Electronic properties
●
The switching outputs are optical coupler outputs ( → P. 61, Fig. 20 ).
●
The logics required by the user is set at the manufacturer's works.
Functions
NOTICE:

Only connect each switching output to 24 VDC/100 mA max.

Only connect inductive loads if suppressor diodes are integrated or
installed for protection against induced voltages.

Pay attention to the switching logic ( → Table 5 ).
Table 4 Switching outputs: Functions
Name Function
Measured value valid Activated if the current measured value of the EuroFID is valid.
Calibration Activated as long as a calibration is running. 1
1
Corresponds to the status signal “Check” of the NAMUR recommendations
Malfunction Deactivated if there is an internal fault in the function of the EuroFID.
2
2 Display of the possible cause → P. 93, §10.5
Service requirement Activated if the EuroFID can still perform measurement, but several internal
conditions are no longer in the operating range for valid measuring values. 3 4
3
Corresponds to the status signal “Service requirement” of the NAMUR recommendations
4 A corresponding message is shown on the display.
Alarm if the threshold
value is not reached
(L2)
Activated as long as the measured value is outside the set threshold value.
Option: L2 and H2 remain activated until they are reset by means of a menu
function (setting → P. 124, §11.11.9; reset → P. 130, §11.13).
Instead of L2/L1/H1/H2 two pre- one alarm can be configured to
indicate when a threshold value is exceeded (H0/H1/H2 → P. 124, §11.11.9).
Pre-alarm if the
threshold value is not
reached (L1)
Pe-alarm if the
threshold value is
exceeded (H1)
Alarm if the threshold
value is exceeded (H2)
Table 5 Switching outputs: switching logic
Name deactivated status activated status
Measured value valid Measurement mode is faulty Measuring mode is running
Calibration No calibration Calibration is running
Malfunction Malfunction! 1
1 With this switching logic, “Malfunction” is displayed if the mains supply fails.
–
Service requirement No service requirement Service requirement!
Alarms/pre-alarms No alarm The current measured value is outside
the respective threshold value