01/02 AWB8230-1413GB
Programmable relay outputs
K11 to K34
99
Fault signal (AL)
The relay output configured as AL is activated when a fault has
occurred.
X
Program one of the relay outputs K23-K24 or K33-K34 as AL by
setting the corresponding PNU (C021 or C022) to 05.
By default, AL is assigned to signalling relay K1 (terminals K11,
K12, K14).
After the frequency inverter supply voltage has been switched off,
the AL output remains active until the DC bus voltage has dropped
below a certain level. This time depends, among other factors, on
the load applied to the inverter.
The delay from the time a fault occurs until the AL output is
activated is about 300 ms.
Instant stop (IP) and undervoltage (UV)
The UV (undervoltage) and IP (instant stop) signals can be
assigned to one of the relay outputs K11-K12, K23-K24 or
K33-K34.
The UV output is activated when the internal DC link voltage falls
below a specified limit value. The CPU monitors the DC link
voltage, and as soon as it falls below a particular value, the output
voltage is switched off to prevent the device from being damaged.
This is important since, when the drive requires full power and the
DC link voltage falls, the current rises, which can lead to an
unexpected disconnection due to overload or overcurrent.
The IP output is activated when the supply voltage fails or an
overvoltage occurs. With this function, the input voltage is
monitored, allowing a disconnection to take place more quickly.
Voltage monitoring does not work if a phase failure occurs at the
main power supply (L1, L2, L3) and the control electronics are
supplied externally through the R0T0 terminals.
X
Program one of the relay outputs K23-K24 or K33-K34 as IP by
entering the value 08 in the corresponding PNU (C021 or C022)
or in PNU C026 for signalling relay contacts K11-K12.
X
Program one of the relay outputs K23-K24 or K33-K34 as UV by
entering the value 09 in the corresponding PNU (C021 or C022)
or in PNU C026 for signalling relay contacts K11-K12.
Figure 97:
Relay output K23-K24 configured as AL (fault occurrence)
5...30 V
0
.
250 V
D
K23 K24
AL
efesotomasyon.com - Klockner Moeller - inverter
