MR tapcon 230 pro User Manual

7 Functions and settings
Maschinenfabrik Reinhausen 201478 3550953/00 ENTAPCON® 230 pro
Setting undervoltage monitoring U<
You can use these parameters to set the limit values for an undervoltage.
Undervoltage monitoring prevents tap-change operations if there is a power
cut.
If the measured voltage U
actual
falls below the set limit value , the red
LED U< lights up . The switching pulses to the motor-drive unit are blocked
at the same time provided you have activated the blocking undervoltage U<
parameter. Once the set signaling delay time [► 79]
has passed, the
signaling relay activates (contact X4:1/3 closes and X4:2/3 opens). The Un-
dervoltage U< message appears in the display. The message is reset as
soon as the measured voltage U
actual
again exceeds the limit value for under-
voltage
. If the measured voltage U
actual
falls below 30 V (for example
when the transformer is switched off), the Undervoltage message is also dis-
played. You can however suppress [► 80] this message.
Figure 45: Response to value falling below limit value
1 + B %: Upper limit 7 U
actual
: Measured voltage
2 U
desired
: Desired value A Value falls below limit value
3 - B %: Lower limit B Undervoltage U< message is
displayed
4 Set limit value for undervolt-
age U<
C Voltage falls below 30 V
5 Limit value for suppressing
alarms below 30 V
D Voltage exceeds 30 V again
6 Set signaling delay time for
limit value for undervoltage
U<
E Value exceeds limit value
7.5.1
Behavior

MR tapcon 230 pro Specifications

General

Brand	MR
Model	tapcon 230 pro
Category	Controller
Language	English