Lenze i510 - DC Braking

10.3 DC braking
The "DC braking" funcon allows the drive to be quickly braked to a standsll without the
need of using an external brak
e resistor.
NOTICE!
Avoid long-me acvaon of the "DC braking" funcon with a high braking curren
t or a high
braking voltage!
Possible consequence: thermal motor overload.
▶
Only use the "DC braking" funcon in applicaons in which the load is only exceponally
stopped.
Details
The funcon can be used as follows:
1.
Automacally at mot
or start-up:
•
DC braking can be selected as starng method in 0x2838:001 (PAR 203/001).
•
At motor start-up, DC braking is then acve with the braking current set in 0x2B84:001
(PAR 704/001) for the hold me set in 0x2B84:002 (PAR 704/002).
•
Only when the hold me has elapsed, the motor is accelerated to the setpoint.
2.
Automacally when the motor is stopped:
•
If the motor frequency falls below the operang threshold set in 0x2B84:003
(PAR 704/003) when the motor is stopped, the inverter stops the deceleraon process.
•
DC braking then becomes acve with the braking current set in 0x2B84:001
(PAR 704/001) for the hold me set in 0x2B84:002 (PAR 704/002).
3.
Manually:
•
DC braking can be acvated manually via the trigger assigned to the "DC braking" func-
on. 4Acvang DC braking manually ^ 202
•
DC braking then remains acve as long as the trigger is TRUE.
Parameter Name / value range / [default seng] Info
0x2B84:001
(PAR 704/001)
DC braking: Curren
t
(DC braking: Current)
0.0 ... [0.0] ... 200.0 %
Braking current for DC braking.
•
100 % ≡ rated motor current 0x6075 (PAR 323)
0x2B84:002
(PAR 704/002)
DC braking: Automac hold me
(DC braking: Hold me autom.)
0.0 ... [0.0] ... 999.9 s
Hold me for automac DC braking.
•
The "Automac DC braking" funcon is acve for the me set here.
0x2B84:003
(PAR 704/003)
DC braking: Automac operang threshold
(DC braking: Threshold autom.)
0.0 ... [0.0] ... 599.0 Hz
Operang threshold for automac DC braking.
•
With the seng 0, the "Automac DC braking" funcon is deacva-
ted.
0x2631:005
(PAR 400/005)
Funcon assignment: DC braking
(Funcon list: DC braking)
•
For possible sengs see descripon for
0x2631:001 (PAR 400/001). ^ 188
Assignment of a trigger for the "DC braking" funcon.
Trigger = TRUE: "DC braking" funcon is acvated.
Trigger = FALSE: no acon / deacvate funcon again.
4DC braking ^ 153
00 Not connected No trigger assigned (trigger is constantly FALSE).
Addional funcons
DC braking
153
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