160 Program features
Operation time scheme
The time scheme below illustrates the operation of the brake control function. See
also section
on page
t
od
t
cd
n
cs
t
md
1
2
3
4
7
I
s
/
T
s
I
mem
/
T
mem
Inverter modulating
Motor magnetized
Open brake command
(RO/DO)
Internal speed
reference (actual
motor speed)
I
output
/ Torque
External speed
reference
Start command
t
I
s
/
T
s
Brake open current/torque (parameter
or
I
mem
/
T
mem
Brake close current/torque (saved in parameter
t
md
Motor magnetizing delay (parameter
)
t
od
n
cs
Brake close speed (parameter
)
t
cd
Mechanical brake close delay
Summary of Contents for ACS355 series
Page 1: ...ABB machinery drives User s manual ACS355 drives ...
Page 4: ......
Page 16: ...16 ...
Page 32: ...32 Operation principle and hardware description ...
Page 58: ...58 Electrical installation ...
Page 74: ...74 Start up control with I O and ID run ...
Page 106: ...106 Control panels ...
Page 120: ...120 Application macros ...
Page 178: ...178 Program features ...
Page 338: ...338 Fieldbus control with embedded fieldbus ...
Page 368: ...368 Fault tracing ...
Page 404: ...404 Dimension drawings ...
Page 410: ...410 Appendix Resistor braking ...
Page 434: ...434 Appendix Permanent magnet synchronous motors PMSMs ...