6 Parameters
6.5 Parameter description
DE1 variable speed starter
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97
6.5.5 DC braking
When using DC braking, DE1 variable speed starters apply a DC voltage to
the stator windings of the connected three-phase motor. This makes it
possible to brake motors that are already rotating (e.g., pumps and fans)
before starting them, as well as to hold braked motors (e.g., handling
equipment and winding gear) in a stop position for a specific time.
DC braking can be activated with parameter P-25, while parameter P-26 can
be used to define the braking time (maximum: 10 seconds). The braking
voltage and the resulting braking torque can be adjusted with P-27 as a
percentage of nominal motor voltage P-07. Higher values will produce a
higher braking torque, but will also result in increased motor heating.
If a deceleration ramp is active (P-05 = 1), parameter P-28 can be used to
define an activation frequency at which the device will automatically switch
to DC braking if a stop command has been issued. P-28 is defined as a
percentage of P-01 (f-max).
If P-05 = 0 ("coasting"), DC braking will be activated as soon as a stop
command is given. In this case, P-28 will be ignored.
Table 24: DC braking parameters
PNU
Modbus ID
Access right
Name
Value
DS
Description
RUN,
STOP
ro/rw
P-05
133
RUN
rw
Stop mode
0/1
1
Stop mode
Used to define how the DE1 variable speed
starter will behave if the enable signal
(FWD/REV) is switched off:
1
: The drive will decelerate with the time
set in P-04 all the way to 0 Hz (stop).
0
: The drive will decelerate uncontrolled
(coast) all the way to a stop.
P-25
153
STOP
rw
DCBrake
0 - 3
0
DC braking, function
Used to define the operating states in
which DC braking will be activated.
0
= deactivated
1
= Activated in the event of a STOP (P-26)
2
= Activated before START (P-26)
3
= Activated before START and in the
event of a STOP
P-26
154
RUN
rw
t-DCBrake@stop
0 - 10 s
0 s
DC braking, time
DC braking duration.
P-27
155
RUN
rw
DCBrake Voltage
(0 - 100 %) P-07
0 %
DC braking, voltage
Percentage of the motor voltage for DC
braking.
P-28
156
RUN
rw
f-DCBrake@stop
(0 - 100 %) P-01
0 %
DC braking, frequency
Percentage of the output frequency for
activating DC braking during the
deceleration phase (P-05 = 1).
Содержание PowerXL DE1 series
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Страница 36: ...2 Engineering 2 5 Motor Selection 32 DE1 variable speed starter 09 14 MN040011EN www eaton com ...
Страница 68: ...3 Installation 3 6 Block diagrams 64 DE1 variable speed starter 09 14 MN040011EN www eaton com ...
Страница 132: ...7 Modbus RTU 7 4 Operating mode Modbus RTU 128 DE1 variable speed starter 09 14 MN040011EN www eaton com ...
Страница 146: ...8 Technical Data 8 4 Dimensions 142 DE1 variable speed starter 09 14 MN040011EN www eaton com ...
Страница 172: ...10 Fault messages 10 3 Fault list 168 DE1 variable speed starter 09 14 MN040011EN www eaton com ...
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