Control Of A Mechanical Brake; Example - ABB ACS350 User Manual

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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 as a safety device mentioned in the European
Machinery Directive and related harmonised 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.
Brake control logic is integrated in
the drive application program. The
power supply and wirings needs to
be done by the user.
- Brake on/off control through relay
output RO
Program features
Power supply
230 VAC
Emergency
brake
M
Mechanical brake
Motor
X1B
17 ROCOM
18 RONC
19 RONO