Lenze i510 Series Commissioning

11.5.2 Inverter motor brake
With this braking method, which can be selected in 0x2541:001 (P706.01), the regenerave
energy in the motor is converted as a result of dynamic acceleraon/deceleraon with down-
ramping of the ramp funcon generator.
NOTICE
Too frequent braking may cause thermal overload of the motor.
▶
Avoid acvang the "Inverter motor brake" funcon over a longer me!
▶
In applicaons with a high mass inera and long braking mes (> 2 s), use the "DC braking"
funcon.
Precondions
•
The "Inverter motor brake" braking method must not be used with vercal conveyors
(hoists) or with acve loads!
•
The "inverter motor brake" braking method only works in operang mode 0x6060
(P301.00) = "MS: Velocity mode [-2]".
•
When this braking method is used, the motor overload monitoring is not adapted. A too
frequent use of the inverter motor brake may cause an incorrect operaon of the motor
overload monitoring. 4Motor overload monitoring (i²*t) ^ 162
Details
During the deceleraon process, the ramp funcon generator is stopped. The frequency set in
0x2541:004 (P706.04) is added to the frequency setpoint, taking the sign of the current actual
frequency into consideraon. Furthermore the ramp funcon generator is stopped in a state
of overvoltage. If the DC-bus voltage falls below a dened DC-bus voltage potenal, the addi-
onal frequency connected is reduced again and the ramp funcon generator is re-acvated.
By the alternang acceleraon and deceleraon resulng from this circuit, the energy is con-
verted thermally in the motor. For process-related reasons, torque oscillaons may occur.
Seng instrucons
Generally, the smallest value possible required by the applicaon for being able to sll tra-
verse the load to be moved in a controlled fashion should be set as addional frequency.
Greater mass inera values require an increase in the rated motor frequency set. Increasing
the rated motor frequency, however, causes greater torque oscillaons. A possible conse-
quence is the reduced service life of mechanical components. Furthermore an increase in the
rated motor frequency also increases the energy converted into heat in the motor. A possible
consequence is the reduced service life of the motor.
Parameter Name / value range / [default seng] Info
0x2541:004
(P706.04)
Brake energy management: Addional frequency
(Brake management: Add.frequency)
0.0 ... [0.0] ... 10.0 Hz
Frequency deviaon which is connected to the deceleraon ramp in a
pulsave fashion when the "Inverter motor brake" braking method is
used.
0x2C01:005
(P320.05)
Motor parameters: Rated frequency
(Motor parameters: Rated frequency)
Device for 50-Hz mains: 1.0 ... [50.0] ... 1000.0 Hz
Device for 60-Hz mains: 1.0 ... [60.0] ... 1000.0 Hz
General motor data.
Carry out sengs as specied by motor nameplate data.
Note!
When you enter the motor nameplate data, take into account the phase
connecon implemented for the motor (star or delta connecon). Only
enter the data applying to the connecon type selected.
Addional funcons
Brake energy management
Inverter motor brake
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Lenze i510 Series Specifications

General

Brand	Lenze
Model	i510 Series
Category	Inverter
Language	English