Lenze 931W - Manual (Page 23)

Software implementation and parameter setting
Status menu
5
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23 HB 13.0001-EN 3.0
DC-bus voltage
The DC-bus voltage is displayed in volts and is the DC voltage required for the power
section. If the DC-bus voltage is too low, the servo inverter outputs a warning or switches
off the motor.
Device type Voltage threshold
Warning signal (V) Disconnection (V)
Mains voltage device 230 VAC/325 VDC 220 180
Low-voltage device 42 V 32 37
Low-voltage device 24 V 19 17
Equivalently to this, if the DC-bus voltage is exceeded, the motor at first is decelerated via
loss resistance, and in case of further voltage rise it is switched off.
Device type Voltage threshold
Brake resistor activation (V) Disconnection (V)
Mains voltage device 230 VAC/325 VDC 370 - 380 400
Low-voltage device 42 V ----- 52
Low-voltage device 24 V ----- 36
Tab. 1 Voltage threshold: brake resistor
Electronics temperature
This field indicates the current electronics temperature. The limit value for the
temperature of the electronics is 78°C. By means of a specific derating above 70°C, this
limit is prevented from being exceeded. During the derating, the current and therefore the
torque generated by the motor is linearly reduced from the output value to zero on the
upper limit value. As this at any rate brings about a reduced output, the derating is
displayed under a warning.
Motor temperature
Another important value is the motor temperature that is displayed here, its limit value
being 140°C. Here the motor power above 130°C is also linearly reduced by means of a
derating , at which just like in case of the electronics temperature a warning is output. If
the critical temperature limit of 140°C is reached in spite of the derating, the output stage
is switched off, and a corresponding fault message is output.
Active travel data set
Here the currently edited travel data set is shown. The possible travel data set numbers in
this connection can be 0 to 99. If currently no travel data set is being edited, the number
”-1” is displayed.