Brake Sequence - YASKAWA L1000A Technical Manual

Inspection Operation Timing Chart
■
A timing chart for Inspection Operation appears in
Inspection Operation without Decel Ramp (C1-15 = 0)
Safe disable (terminals H1/H2 on)
and Baseblock off (H1-
H1- = 54 (Inspection Operation)
Up/Down command
H2- = 51 (Output Cont. Contr.)
H2- = 50 (Brake Control)
<1> The drive stops if either the Up/Down command or Inspection Operation signals are removed.

◆ Brake Sequence

WARNING! Sudden Movement Hazard. Rapid deceleration may cause the drive to fault on an overvoltage condition, resulting in death
or serious injury due to an uncontrolled motor state. Be sure to set an acceptable deceleration time in parameter C1-09, Fast Stop
Ramp, when using the fast-stop feature.
NOTICE: Always turn off the RUN command before changing the setting of parameters d1-18 (Speed Reference Selection Mode),
b1-01 (Speed Reference Selection), or H1-
settings, the motor may unexpectedly start running, and could result in injury.
The drive supports two types of brake sequences, one with torque compensation at start using an analog input terminal
(H3- = 14) and the other without torque compensation at start.
Brake Sequence without Torque Compensation
■
To configure the brake sequence operation without torque compensation, do not set any analog input terminals for
"Torque compensation" (H3- = 14).
Figure 4.12
S1-10
(Up/Down Command
Delay Time)
Speed
Up/Down Command
Safe disable (terminals H1/H2 on)
and Baseblock off (H1- = 8/9)
Output Contactor Control
(H2- = 51)
Motor Contactor Response
(H1- = 56)
Brake Control (H2- = 50)
Figure 4.17 is divided into time zones.
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual
Figure
Inspection Operation
Speed
DC Injection Braking/
Position Lock at start
Speed
= 8/9)
<1>
Figure 4.16 Inspection Operation Sequence

(Multi-Function Digital Inputs). If the RUN command is on when changing any of these
S1-04
(DC Injection/
Selected Speed
PositionLock
Time at Start)
DC Injection Braking/
Position Lock at Start
S1-06
(Brake
Release
Delay
Time)
t1 t2 t3 t4
Figure 4.17 Brake Sequence without Torque Compensation at Start
Table 4.11 explains the sequence in each time zone.
4.6 Setup Procedure for Elevator Applications
4.16.
Inspection Operation with Decel Ramp (C1-15 > 0)
Speed
Safe disable (terminals H1/H2 on)
and Baseblock off (H1- = 8/9)
H1- = 54 (Inspection Operation)
Up/Down command
H2- = 51 (Output Cont. Contr.)
H2- = 50 (Brake Control)
Lock Time at stop)
d1-26
(Leveling Speed)
Position Lock at Stop
S1-07
(Brake
Close
Delay
Time)
t5 t6 t7
Inspection Operation
Speed
DC Injection Braking/
C1-15
Position Lock at start
<1>
Enabled
S1-05
(DC Injection
Braking/Position
S1-11
(Output Contactor
DC Injection/
Open Delay Time)
t8 t9
Enabled
4
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