8 final works, Power supply modules, Danger – Lenze 9400 Manual User Manual
Page 260
Power supply modules
Final works
6
260
EDS94SPP101 EN 7.1
6.8
Final works
Danger!
Dangerous voltage!
Depending on the device, the DC-bus voltage is still charged for
approx. 3 ... 20 min after switching off the mains voltage.
ƒ
The state of charge is not indicated!
ƒ
On synchronous motors self-discharge only starts after a possible feedback
operation has been completed.
ƒ
Discharging the DC bus in a controlled manner via the brake chopper/brake
resistor requires the external 24 V supply ( digital input DI1).
Possible consequences:
ƒ
Death or severe injuries when touching the terminals.
Protective measures:
ƒ
Before starting work on the system check that it is deenergised.
ƒ
Wait at least 3 minutes after switching off the mains voltage.
ƒ
Only remove deenergised standard devices from the installation backplanes
and do not touch any terminals.
How to proceed:
ƒ
Adjust the setting for the mains voltage/brake chopper threshold to the mains
Setting of mains voltage/brake chopper threshold
2
Pos.
U
LN
[V]
U
BRmax
[V]
1
500 V
480 V
400 V
230 V
ON
MAINS
12
500
790
OFF
OFF
480
765
ON
OFF
400
725
OFF
ON
230
390
ON
ON
94APNEDS01
ƒ
Switch on the 24 V supply
ƒ
Check the operating status by means of the LED display
If you want to continue commissioning:
ƒ
Switch on the mains