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9
Diagnostics & error management
9.8
Operation without mains supply
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Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23
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9.8
Operation without mains supply
The following display parameters have a value of "0" if the mains supply is switched off and the
external 24 V supply of the inverter is switched on:
Note!
Observe the following restrictions for operation without mains supply:
Safety state
Inverters of the 8400 series can be optionally equipped with the integrated "Safe torque
off (STO)" safety system.
•
Up to and including version 13.xx.xx, the following applies:
If merely the external 24-V supply of the inverter is switched on, the "Safe torque off"
status in
(bit 10) will not be updated.
•
From version 14.00.00 the following applies:
If merely the external 24-V supply of the inverter is switched on, the "Safe torque off"
status in
(bit 10) will be updated.
Fan monitoring functions
The fan monitoring functions are only active if the mains supply is switched on.
Parameters
Info
MCTRL: Speed setpoint
MCTRL: Actual speed value
Motor voltage
DC-bus voltage
Motor current
Output frequency
Heatsink temperature
Device utilisation (Ixt)
Thermal motor load (I²xt)
Switching cycles
Current switching frequency