Lenze E82EV302K4C User Manual

Acceleration, deceleration, braking, stopping
DC braking (DCB)
10
Function library
10.7
10.7.4
L
10.7-6
EDS82EV903-1.0-11/2002
Fail-safe change of the direction of rotation
Link C0410/22 and C0410/23 with a signal source each.
When the direction of rotation is changed the drive brakes along the quick-stop
ramp (C0105) and accelerates along the acceleration ramp (C0012) in the other
direction of rotation.
If all connections are correct in phase and the signal is HIGH-active, the direction
of rotation will be:
Direction of rotation Signal level at Notes
D
i
r
e
c
t
i
o
n
o
f
r
o
t
a
t
i
o
n
C0410/22
(DCTRL1-CW/QSP)
C0410/23
(DCTRL1-CCW/QSP)
N
o
t
e
s
CCW rotation: LOW HIGH
CW rotation: HIGH LOW
Quick stop LOW LOW
unchanged HIGH HIGH • During operation: The direction of rotation
results from the first active signal.
• When switching on the mains: The
controller activates quick stop (QSP).
)
))
) Note!
In addition to the free configuration you can also use the fixed
assignment under C0007 to link the function ”Change of direction
of rotation” with a digital input.
10.7.4 DC braking (DCB)
The DC-injection brake enables quick deceleration of the drive to standstill
without using an external brake resistor. The DC-injection brake can be activated
via terminal or automatically.
l The braking torque amounts to approx. 20 ... 30 % of the rated motor
torque. It is lower than for braking in generator mode with external brake
resistor.
l A brake voltage or a brake current can be selected.
l Automatic DC braking improves the starting performance of the motor e.g.
when operating hoists.
Codes for parameter setting
Code Possible settings IMPORTANT
No. Name Lenze Selection
C0019 Threshold for
automatic
DC-injection brake
(Auto DCB)
0.10 0.00
= not active
{0.02 Hz} 650.00 Holding time ð C0106
Deactivate the automatic DC injection brake
when the minimum frequency limit C0239
is active
^ 10.7-6
C0035* DC injection brake 0
0 Brake voltage selection under C0036
Holding time ð C0107 ^ 10.7-6
v
j
(DCB) control mode
1 Brake current selection under C0036
g
C0036 Voltage/current DC
injection brake
(DCB)
à 0.00 {0.01 %} 150.00 % à Depending on the controller
• Reference M
r
,I
r
• Setting applies to all mains voltages
permitted
^ 10.7-6
Activating fail-safe change
Description
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Lenze E82EV302K4C Specifications

General

Brand	Lenze
Model	E82EV302K4C
Category	DC Drives
Language	English