MR ETOS IM - Monitoring Functions

7 Operation
Maschinenfabrik Reinhausen GmbH 2019 1495163667/06 EN ETOS
®
IM
7.8 Monitoring functions
For various measured values, you can define limit values that are monitored
by the device.
7.8.1 Voltage monitoring
For monitoring the transformer's current output voltage, you can set 4 limit
values:
▪ Undervoltage U<<: Lower limit 2
▪ Undervoltage U<: Lower limit 1
▪ Overvoltage U>: Upper limit 1
▪ Overvoltage U>>: Upper limit 2
If the measured value is higher than the upper limit (> or >>) or lower than
the lower limit (< or <<), the device reacts in accordance with the Behavior
parameter.
U>>
U<
U
t
U>
U<<
t
V
t
E
H
Figure103: Example of voltage monitoring with the limit value Overvoltage U> being exceeded
U>> Overvoltage U>> U> Overvoltage U>
U< Undervoltage U< U<< Undervoltage U<<
t
V
Delay time t
E
Event duration
H Hysteresis
You can set the following parameters for each limit value:
▪ Relative/absolute limit value
▪ Limit value [V]: Absolute limit value
▪ Limit value [%]: Limit value relative to desired voltage value
▪ Hysteresis limit value
▪ Delay time limit value
▪ Behavior limit value