Specifications

YASKAWA Inverter Drive A1000 – Crane Software Application Manual
44
S2-03 Run Command Delay Timer: When a hoist command is entered immediately after the load has been lowered in V/f
and Open Loop Vector control modes, a large amount of current may flow through the drive and trigger a fault. To reduce
the output current peak the hoist command can be delayed using this parameter. To calculate an appropriate time for this
parameter use the following formula:
()()
()()
s
EE
EE
S 5.1
0320222
032012
032
22
⋅
−⋅−⋅
−−−
=−
π
No. Parameter Name Setting Range Default
S2-03
Run Command Delay Timer 0.00 to 10.00 s 0.00 s
7.2.2 Run Command Adjustment Operation
The following time chart shows drive operation when Run Command Minimum On Time parameters are used.
(1) When the drive is stopped and a run command is entered (in all control modes):
• If the duration of the external run command is shorter than the Minimum On Time (S2-01, -02) then the drive will
run until the Minimum On Time has expired.
• If the duration of the external run command is longer than the Minimum On Time (S2-01, -02), then the drive will
run until the external run command is removed.
(2) When the drive is decelerating and a run command is entered:
• When the drive is motoring in the same direction as the run command that has been entered, the drive will
operate according to the table below.
Minimum ON Time (S1-01, -02) = 0 Minimum ON Time (S1-01, -02) ≠ 0
Control Mode
Output Frequency > F
α
Output Frequency ≤ F
α
Output Frequency > F
α
Output Frequency ≤ F
α
ALL
Drive Re-accelerates Brief Stop Stops for a minimum of 50ms
• When the drive is motoring in the opposite direction as the run command that has been entered, the drive will
operate according to the following table:
Minimum ON Time (S1-01, -02) = 0 Minimum ON Time (S1-01, -02) ≠ 0
Control Mode
Output Frequency > F
α
Output Frequency ≤ F
α
Output Frequency > F
α
Output Frequency ≤ F
α
CLV
Brake is not applied,
FWD/REV switching is
activated
V/f, V/f with PG, OLV
Stops for a minimum of 50 ms
Time
OutputFrequency
RunCmdProhibited
InternalRunCmd
FWD(REV)RunCmd
S2‐01(‐02)
S2‐01(‐02)
50ms 50ms