Siemens SIRIUS 3UG4 Equipment Manual page 284

Parameters
The measured value can be parameterized as "Threshold for overshoot" or as "Warning threshold
for overshoot" (only on devices for IO-Link).
The setting for the "Warning threshold for overshoot" parameter defines the switching threshold
of the relevant output relay prior to tripping due to a measured value overshoot.
If the set "Threshold for overshoot" parameter is overshot, the output relay will change its
switching state after expiry of the set delay time and an IO-Link message may be sent. If the
measured value has reached the relevant set hysteresis value, the output relay ("Reset response"
parameter set to autoreset) will immediately revert to its original state and a new IO-Link
message may be sent.
Further response depends on the set reset response (see "Reset response" parameter).
You can find information on the switching behavior of the output relays in the "Functionality"
chapters of the relevant monitoring relays.
Possible indications on the display:
• Current overshoot: I▲ (threshold), I!▲ (warning threshold)
• Voltage overshoot: U▲ (threshold), possibly U!▲ (warning threshold)
• Speed overshoot: rpm▲ (threshold), possibly rpm!▲ (warning threshold)
• Power factor overshoot: φ▲ (threshold), possibly φ!▲ (warning threshold)
• Active current overshoot: I
• Fault current overshoot: I▲(threshold), possibly I! (warning threshold)
Reset response
The setting of the "Reset response" parameter controls how the device behaves after tripping in
the event of an error, and the subsequent reversion of the measured values to the normal range
once the cause of the error has been dealt with.
The outputs are reset dependent on the setting of the "Reset response" parameter.
The following settings can be selected:
• Automatic reset
If the device is set to automatic reset, the switching contact will respond once the normal
range plus the hysteresis threshold have been reached. The device is reset automatically as
soon as a previously occurring error has been dealt with. The overshoot or undershoot which
triggered the response is not saved.
• Manual RESET
If manual RESET is selected, the switching contact remains in the current switching state
even if the measured value returns to a permissible value.
Possible indications on the display: Mem
284
▲ (threshold), possibly I
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Equipment Manual, 07/2021, NEB927043002000/RS-AD/005
!▲ (warning threshold)
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SIRIUS 3UG4 / 3RR2 monitoring relay