Program features 159
Control of a mechanical brake
The mechanical brake is used for holding the motor and driven machinery at zero
speed when the drive is stopped, or not powered.
Example
The figure below shows a brake control application example.
WARNING!
Make sure that the machinery into which the drive with brake
control function is integrated fulfills the personnel safety regulations. Note that
the frequency converter (a Complete Drive Module or a Basic Drive Module, as
defined in IEC 61800-2), is not considered a safety device mentioned in the
European Machinery Directive and related harmonized standards. Thus, the
personnel safety of the complete machinery must not be based on a specific
frequency converter feature (such as the brake control function), but it has to be
implemented as defined in the application specific regulations.
M
230 VAC
Mechanical brake
Power supply
Emergency
brake
X1B
17 ROCOM
18 RONC
19 RONO
Brake control logic is integrated
in the drive application
program. The user has to take
care of the power supply and
wiring.
Brake on/off control is through
relay output RO.
Motor
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 ...