Program features 151
Brake slip check
This function checks for any brake slips while torque proving is performed with the
brake closed. If the actual elevator speed (
LIFT SPEED ACT) exceeds the
defined speed limit (parameter
SLIP SPEED LIM) during torque proving and
stays there for longer than defined with parameter
SLIP FAULT DELAY, the
drive trips on fault BRAKE SLIP.
Settings
Diagnostics
Brake open torque selection
The Brake open torque selection function ensures the right starting torque level after
brake opening and, thus, prevents the speed from dropping. The function is in
operation when torque proving is completed and the brake open command is
triggered.
With parameter
BRK OPEN TRQ SEL, you can select the following sources for
the brake open torque:
•
AI1 SCALED or
AI2 SCALED: brake open torque source as an AI-
scaled value. Used when a load sensor is available.
•
BRAKE OPEN TORQ: brake open torque source as a fixed value. Used
with counter weightless lift.
The starting torque can be ramped up and down by using a user defined ramp time.
• Parameter
TORQ RAMP UP – ramp time to build up the starting torque
against the closed brake.
• Parameter
TORQ RAMP DOWN – time to ramp down the torque to zero,
after brake is closed.
Parameters
Additional information
SLIP SPEED LIM
Defines the speed limit to be checked during torque proving.
SLIP FAULT DELAY
Defines the time delay for generating fault BRAKE SLIP.
Signals
Additional information
Actual signals
LIFT FW bit 2
(BRAKE SLIP)
Displays whether fault BRAKE SLIP has occurred or not.
Faults
BRAKE SLIP
The brake slipped while a torque proving sequence was taking place.
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 ...