Accel/Decel Ramp And Jerk Settings - YASKAWA L1000A Technical Manual

Multi-Function Analog Outputs
■
The H4 parameters assign functions to analog output terminals FM and AM. Select the function for these terminals by
entering the last three digits of the desired U monitor. For a list of analog output functions, refer to
page 430.

◆ Accel/Decel Ramp and Jerk Settings

Acceleration and deceleration ramps are set using the C1- parameters. Use the C2- parameters to adjust the jerk
at the start of acceleration or deceleration.
Figure 4.13 explains how accel/decel ride and jerk settings can be used to adjust the ride profile.
Figure 4.9
C2-02
(Jerk at
Accel End)
C2-01
(Jerk at
Accel Start)
Units used to set the acceleration and deceleration ramp as well as the Jerk function change with the setting of parameter
o1-03. Refer to Digital Operator Display Unit Selection on page 108
◆ Elevator Emergency Stop
■ Start condition for Elevator Emergency Coast to Stop
An emergency coast to stop is performed when the Up or Down command is cleared and all of the following conditions
are met.
• Parameter b1-03 (Stopping Method Selection) is set to 4.
• Parameter d1-18 (Speed Reference Selection Mode) is set to 0 or 3.
• Parameter b1-01 (Speed Reference Selection) is set to 1.
• The Up/Down command is cleared and U1-05 (Speed Feedback) is equal to or greater than S1-26 (Emergency Stop
Start Level).
Elevator Emergency Stop Timing Chart
■
A timing chart for Elevator Emergency Coast to Stop and normal Ramp to Stop appears in
Figure 4.10
Up/Down Command
Safe disable (terminals H1/H2 on)
or Baseblock off (H1-
H2- = 51 (Output Cont. Contr.)
H2- = 50 (Brake Control)
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual
C1-01
(Accel Ramp 1)
C1-02
(Decel Ramp 1)
Figure 4.13 Accel/Decel Ramp and the Jerk Function
DC Injection Braking/
Position Lock at Start
Speed
= 8/9)
Figure 4.14 With Up/Down command cleared and U1-05 ≥ S1-26
4.6 Setup Procedure for Elevator Applications
C2-03
(Jerk at
Decel Start)
C2-04
(Jerk at
C2-05 (Jerk Below Leveling Speed)
Decel End)
d1-26 (Leveling Speed)
for details.
Selected Speed
S1-26
Emergency Stop
Start Level
U: Monitors on
Figure 4.14 and Figure
S1-11
(Output Contactor Open
Delay Time)
Coast to Stop
Enabled
4
4.15.
127