MR ETOS TD, Operating Instructions Manual

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9 Visualization
Maschinenfabrik Reinhausen GmbH 2020 194 4453918/14 EN ETOS
®
TD
9.22 Monitoring functions
For various measured values, you can define limit values that are monitored
by the device.
9.22.1 Voltage monitoring
In order to monitor 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 transmits an event message.
U>>
U<
U
t
U>
U<<
t
V
t
E
H
Figure 131: 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 the desired voltage value (only for
devices with voltage regulation)
▪ Hysteresis limit value
▪ Delay time limit value
▪ Behavior limit value (only for devices with voltage regulation)