Yaskawa CIMR-LU Drives - Manual (Page 91)

4 Start-Up Programming & Operation
YASKAWA ELECTRIC TOEP C710616 38F YASKAWA AC Drive L1000A Quick Start Guide 91
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◆ S: Elevator Parameters
This section describes various functions and faults needed to operate an elevator application: braking sequence, slip
compensation, optimal adjustments at start and stop, Rescue Operation, and elevator-related faults.
■ S1-01: Zero Speed Level at Stop
Determines the speed to begin applying DC Injection (or Position Lock) when the drive is ramping to stop (b1-03 = 0).
Set as a percentage of the maximum output frequency (E1-04).
The function set by S1-01 changes depending on the control mode:
• V/f Control or OLV Control (A1-02 = 0, 2)
For these control modes, 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.
• CLV Control or CLV/PM Control (A1-02 = 3, 7)
For these control modes, parameter S1-01 sets the starting speed for Position Lock at stop. Once the motor speed falls
below the setting of S1-01, Position Lock is enabled for the time set in parameter S1-05.
■ S1-02: 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.
■ S1-03: 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.
■ S1-04: DC Injection / Position Lock Time at Start
Determines how long the drive should perform DC Injection at start. In CLV and CLV/PM, S1-04 determines how long
Position Lock should be performed. 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.
■ S1-05: DC Injection / Position Lock Time at Stop
Determines how long the drive should perform DC Injection at stop. In CLV and CLV/PM, S1-05 determines how long
Position Lock should be performed. A setting of 0.00 disables S1-05.
No. Parameter Name Setting Range Default
S1-01 Zero Speed Level at Stop 0.000 to 9.999% Determined by A1-02
No. Parameter Name Setting Range Default
S1-02 DC Injection Current at Start 0 to 100% 50%
No. Parameter Name Setting Range Default
S1-03 DC Injection Current at Stop 0 to 100% 50%
No. Parameter Name Setting Range Default
S1-04 DC Injection / Position Lock Time at Start 0.00 to 10.00 s 0.40 s
No. Parameter Name Setting Range Default
S1-05 DC Injection / Position Lock Time at Stop 0.00 to 10.00 s 0.60 s
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