LS ELECTRIC SV-iS7 Series, User Manual

Page: 297 / 491

Learning Advanced Features
280
Group Code Name LCD Display Parameter Setting Setting Range Unit
time
47
Brake engage
frequency
BR Eng Fr 2.00 0 – 400 Hz
OUT
31 –
32
Multi-function relay1 – 2 Relay 1 – 2
35 BR Control : - -
33
Multi-function output1
item
Q1 Define
Brake Control Details
Code Description
ADV-12 Dc-Start Time
ADV-15 Dc Brake Time
ADV-16 Dc Brake Level
ADV-20 Acc Dwell Freq,
ADV-21 Acc Dwell Time,
ADV-22 Dec Dwell Freq,
ADV-23 Dec Dwell Time
ADV-42 BR Rls Dly
ADV-44 BR Rls Fwd Fr
ADV-45 BR Rls Rev Fr
ADV-46 BR Eng Dly
ADV-47 BR Eng Dly
When the brake control is activated, DC braking (ADV-12) at inverter
start and dwell operation (ADV-20
– 23) do not operate.
Brake Operation Sequence in Control Modes Other than
“Vector”
<Brake release sequence>
During the motor stop state, if an operation command is entered,
the inverter accelerates up to the brake release frequency (ADV-44
–
45) in a forward or reverse direction.
After reaching the brake release frequency, if the motor current
reaches the brake release current (BR Rls Curr), the output relay or
multi-function output terminal for brake control sends a release
signal.
Once the signal has been sent, acceleration will begin after
maintaining the frequency for the brake release delay time (ADV-42
BR Rls Dly).
<Brake engage sequence>
If a stop command is sent during operation, the motor decelerates.
Once the output frequency reaches the brake engage frequency (ADV-
47 BR Eng Fr), the motor stops decelerating and sends out a brake
engage signal to a preset output terminal.
The frequency is maintained for the brake engage delay time (ADV-47
BR Eng Dly) and it becomes “0” afterwards. If the DC braking time (ADV -
15) and DC braking resistance (ADV-16) are set, the inverter output is
blocked after DC braking. For more details on DC braking, refer to
7.17.2 Stop after DC Braking on page 185 .