Program features 149
Mechanical brake control
The elevator system is equipped with a mechanical brake that holds the elevator car
at standstill when the elevator drive is stopped or not powered. Typically, the drive
controls the brake open or closed via a relay output. Alternatively, the brake can also
be controlled by the elevator controller.
Mechanical brake control (with or without monitoring) is activated with parameter
BRAKE CONTROL. The monitoring signal can be connected to, for example, a
digital input. The brake on/off value is reflected by
BRAKE COMMAND, which
should be connected to a relay (or digital) output. The brake will open upon drive start
after the delay
BRAKE OPEN DELAY has elapsed and the requested motor
start torque (selected with
BRK OPEN TRQ SEL) is available. The brake will
close after motor speed decreases below
BRAKE CLOSE SPD and the delay
BRAKE CLOSE DLY has elapsed. When the brake close command is issued,
the motor torque is stored into
BRAKE TORQ MEM.
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 (as defined in EN81-1), is not considered
as a safety device mentioned in the European Elevator Directive and related
harmonised standards.
If the Elevator Directive is not applicable, 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.
The Mechanical brake control function also performs the following tasks:
• Torque proving checks
• Brake slip checks
• Brake open torque selection.
Summary of Contents for ACL30
Page 1: ...ABB high performance elevator drives User s manual ACL30 elevator drive ...
Page 4: ......
Page 20: ...20 Safety instructions ...
Page 34: ...34 Operation principle and hardware description ...
Page 42: ...42 Planning the cabinet installation ...
Page 60: ...60 Planning the electrical installation ...
Page 126: ...126 Using the control panel ...
Page 318: ...318 Maintenance ...
Page 334: ...334 The Safe torque off function ...
Page 338: ...338 Mains chokes ...
Page 342: ...342 EMC filters ...
Page 348: ...Dimension drawings 348 Frame size B D1 D2 W H1 H2 ...
Page 349: ...Dimension drawings 349 ...
Page 350: ...Dimension drawings 350 Frame size C D1 D2 H2 H1 W ...
Page 351: ...Dimension drawings 351 ...
Page 352: ...Dimension drawings 352 Frame size D ...
Page 354: ...354 Dimension drawings EMC filters JFI 0x ...
Page 356: ...356 Dimension drawings Brake resistors JBR xx ...
Page 358: ...358 Dimension drawings ...