YASKAWA LA500 - 12.10 S: Elevator Parameters; S1: Brake Sequence

Parameter Details
12
12.10 S: Elevator Parameters
YASKAWA SIEPYEULA5001C LA500 Technical Manual 363
12.10 S: Elevator Parameters
S parameters describe various functions and faults needed to operate an elevator application:
• Braking Sequence
• Slip Compensation
• Optimal Adjustments at Start and Stop
• Rescue Operation
• Elevator-related Faults
◆ S1: Brake Sequence
The drive supports braking sequences using an analog input terminal to control torque compensation at start (H3-
xx = 14), and braking sequences that do not require an analog input to set the torque compensation level.
■ S1-01: Zero Speed Level at Stop
No.
(Hex.)
Name Description
Default
(Range)
S1-01
(0680)
Zero Speed Level at Stop
Determines the speed to begin applying DC Injection when the drive is ramping to stop (b1-03 =
0). Set as a percentage of the maximum output frequency (E1-04).
Determined by A1-02
(0.000 - 9.999%)
Parameter S1-01 sets the starting speed for DC Injection Braking at stop. Once the output speed falls below the
setting of S1-01, the amount of DC Injection Braking current set in S1-03 is injected into the motor for the time
set in parameter S1-05.
■ S1-02: DC Injection Current at Start
No.
(Hex.)
Name Description
Default
(Range)
S1-02
(0681)
DC Injection Current at
Start
Determines the amount of current to use for DC Injection at start. Set as a percentage of the drive
rated current.
50%
(0 - 75%)
■ S1-03: DC Injection Current at Stop
No.
(Hex.)
Name Description
Default
(Range)
S1-03
(0682)
DC Injection Current at
Stop
Determines the amount of current to use for DC Injection at stop. Set as a percentage of the drive
rated current. When using OLV Control, the DC injection current is determined by multiplying
S1-03 by S3-25 or S3-26.
50%
(0 - 75%)
■ S1-04: DC Injection Time at Start
No.
(Hex.)
Name Description
Default
(Range)
S1-04
(0683)
DC Injection Time at Start
Determines how long the drive should perform DC Injection at start. During this time, the drive
allows motor flux to develop, which is essential for applying torque quickly once the brake is
released. A setting of 0.00 disables S1-04.
0.40 s
(0.00 - 10.00 s)
■ S1-05: DC Injection Time at Stop
No.
(Hex.)
Name Description
Default
(Range)
S1-05
(0684)
DC Injection Time at Stop
Determines how long the drive should perform DC Injection at stop. A setting of 0.00 disables
S1-05.
0.60 s
(0.00 - 10.00 s)
V/f
OLV
V/f
OLV
V/f
OLV
V/f
OLV
V/f
OLV