January 2012 6.17 Monitoring Functions 959
6.17.6 Monitoring of the power supply unit
The parameter object CfgPowerStage is not required for:
Virtual axes (MP_axisMode=Virtual)
Axes that are for display only (MP_axisMode=Display)
Analog axes (MP_axisHw=Analog)
The rectified supply voltage of the power supply unit is monitored. The supply
voltage must lie within a defined range
(400 V +/– 10 %). If this is not the case the power supply unit reports an AC
fail (PF.PS.AC
).
At the same time, the DC-link voltage is monitored:
If approx. 760 V– (UV 120, UV 140, UV 150, UR 2xx: approx. 800 V) is
exceeded, the NC revokes the pulse release (reset) for the IGBT of the
power module. The motors coast out of loop to a stop. No energy is returned
to the dc link.
If the DC-link voltage falls below approx. 385 V– (UV 120, UV 140, UV 150.
UR 2xx: approx. 410 V), the power supply unit reports a powerfail (PF.PS.ZK
signal)
If the DC-link voltage falls below approx. 155 V– (UV 120, UV 140, UV 150,
UR 2xx, UV 105: approx. 200 V), the control is reset (signal RES.PS
).
Below approx. 135 V– (UV 120, UV 140, UV 150, UR 2xx, UV 105: approx.
180 V), the power supply unit switches off.
The UV 105 power supply unit reports a powerfail if the DC-link voltage is <
approx. 385 V and the supply voltage is < approx. 330 V.
Define in MP_ampAcFailSelection which inverter signal is to trigger the
Powerfail on the control.
Settings in the configuration editor MP number
Axes
ParameterSets
[Key name of the parameter set]
CfgPowerStage
ampAcFailSelection 401207
Inverter signal Meaning
AC fail (PF.PS.AC) Failure of supply voltage for inverter
Powerfail (PF.PS.ZK
) DC-link voltage failure
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