Braking functions – Watson-Marlow MM440 User Manual

Page 121

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Issue 10/06

3 Functions

MICROMASTER 440 Operating Instructions

6SE6400-5AW00-0BP0

121

Braking functions

Priorities are assigned to the various braking functions. For instance, if a DC brake
or a compound brake is activated, then this has a higher priority than the dynamic
brake (resistance-type braking).

DC braking

P1233 > 0

?

yes

no

DC braking

enabled

Compound

braking

P1236 > 0

?

Compound braking

enabled

Dynamic

braking

P1237 > 0

?

Dynamic braking

enabled

disabled

no

no

yes

yes

DC-Bremse

BI: Enabling the DC brake
This enables DC braking using a signal that was used from an external source. The
function remains active as long as the external input signal is active. DC braking causes
the motor to quickly stop by injecting a DC current

⏐f⏐

P0347

f*

i

t

t

t

1

0

f_act

DC braking

0

1

DC braking active

r0053

Bit00

t

f_set

(0:0)

P1230.C

BI: Enable DC brk.

Note: DC brake can be applied in drive states r0002 = 1, 4, 5

P1232 =...

DC braking current

(entered in %)

Defines level of DC current in [%] relative to rated motor current (P0305).

P1230 = ...

100 %

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