MR ETOS IM, Operating Instructions Manual

Page: 151 / 412

7 Operation
Maschinenfabrik Reinhausen GmbH 2019 151 5163667/06 EN ETOS
®
IM
Delay time limit value
You can use this parameter to set the delay time in order to delay the issuing
of the event message.
Behavior limit value
You can use this parameter to set the behavior of the device when the event
message is issued. You can select the following options:
Setting Behavior
Off The limit value is not monitored.
High-speed return ▪ An event message is issued.
▪ For U</U<<: The device performs tap-change opera-
tions in the raise voltage direction (U+) until the mea-
sured voltage is back above the limit value.
▪ For U>/U>>: The device performs tap-change opera-
tions in the lower voltage direction (U-) until the mea-
sured voltage is back below the limit value.
With high-speed return, the device ignores the set delay
time T1 of automatic voltage regulation.
Auto blocking ▪ An event message is issued.
▪ Automatic regulation is blocked.
Auto/manual blocking ▪ An event message is issued.
▪ Automatic regulation is blocked.
▪ You cannot perform tap-change operations in manual
mode.
Table 46: Behavior when an event message is issued
7.8.2 Current monitoring
For monitoring the transformer's current load current, you can set 4 limit val-
ues:
▪ I<<: Lower limit 2
▪ I<: Lower limit 1
▪ I>: Upper limit 1
▪ I>>: Upper limit 2