User Manual

Parameters
3UG4 / 3RR2 monitoring relays
352 Manual, 02/2013, NEB927043002000/RS-AA/002
Tripping delay time
If the measured value overshoots or undershoots the set limit value, the delay time that can
be set using the "Tripping delay time" parameter starts. On expiry of this time, the switching
contact changes state and a message may be sent via IO-Link.
Possible indications on the display:
● Tripping delay time in the case of voltage undershoot: U▼Del
● Tripping delay time in the case of voltage overshoot: U▲Del
● Tripping delay time in the case of (active) current undershoot: I▼Del
● Tripping delay time in the case of (active) current overshoot: I▲Del
● Tripping delay time in the case of speed undershoot: ▼Del
● Tripping delay time in the case of speed overshoot: ▲Del
● Tripping delay time on undervoltage or overshoot of the asymmetry value: Del
● Tripping delay time for asymmetry: AsyDel
● Tripping delay time in the case of undershoot of the cos phi value: φ▼Del
● Tripping delay time in the case of overshoot of the cos phi value: φ▲Del
ON-delay time
The setting of the "ON-delay time" parameter prevents limit violations such as undershoots
(typical of inductive loads) while the system engages from generating a switching response.
The ON-delay time starts in the following cases, depending on the parameter settings:
● At restart
If a measurable signal is again detected after the lower measuring range limit has been
undershot.
● At Power-ON
Re-connection of the supply voltage (Power-ON) of the device after switching off the
current flow (zero current).
● At manual reset
A fault is acknowledged by a manual reset. Following this, the device behaves in the
same way as when the supply voltage is switched on again.