• 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 o the current
ow (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.
Starting the ON-delay time via IO‑Link
The ON-delay time can also be started through the process image of the outputs (PIQ) by setting
the control command "Start ON delay time." This is a simple method of permitting brief load
steps during operation if these are predictable.
The ON-delay time can be set either locally via the three keys on the device, or via IO‑Link. The
requirements governing the starting of the ON-delay time (Power‑ON, manual reset and/or
restart) can only be modied via IO‑Link.
Note
After exiting the menu level SET, the ON-delay time starts again.
Start of the ON-delay
The following table shows the behavior of the ON-delay time (onDel) with the device variants
3UG4 monitoring relay and 3RR2 current monitoring relay.
Device variants Start of the ON-delay possible for:
"Power‑ON" Automatic reset Manual reset
3RR21 Yes Yes Yes
3RR22 Yes Yes Yes
3UG4614 Yes No No
3UG4621 / 3UG4622 Yes Yes Yes
3UG4624 Yes No No
Parameters
SIRIUS 3UG4 / 3RR2 monitoring relay
282 Equipment Manual, 07/2021, NEB927043002000/RS-AD/005
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