YASKAWA CR700, Technical Manual, Page: 224 / 886

3.10 Crane Application Setup Procedure
224 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
Note:
If the resulting frequency reference after having been multiplied by the gain of S2-16 or S2-17 is less than the frequency reference lower
limit, this lower limit value will be used. The frequency reference lower limit is the maximum setting value for the following
parameters.
• d2-02 [Frequency Reference Lower Limit]
• S1-01 [Brake Release Frequency(FWD)]
• S1-02 [Brake Release Frequency(REV)]
• S1-12 [Brake Hold Frequency (FWD)]
• S1-13 [Brake Hold Frequency (REV)]
■
MFDI
H1-xx
Setting
Name Description
3A Micro Speed Gain1
When the corresponding terminal is on, the frequency reference is multiplied by the gain set to
S2-16 [Micro Speed Gain1]
.
3B Micro Speed Gain2
When the corresponding terminal is on, the frequency reference is multiplied by the gain set to
S2-17 [Micro Speed Gain2] .
Note:
When the frequency reduction gain 1 input is on, the gain set to S2-16 [Micro Speed Gain1]
has priority.
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Description of Operation
◆
Rapid Deceleration Function
The deceleration rate can be changed to rapidly stop operation by inputting a Run command in reverse to the
current running direction during the ramp to stop operation. This enables quick deceleration near the target
location even when using high-speed operation.
■
Description of Operation
Set
S2-18 = 1 [Rapid Deceleration Selection = Enabled]
to enable this function.
When deceleration starts after the Run command is turned off, and a Run command in reverse to the current
direction of motor rotation is input, the motor rapidly decelerates per the time set to S2-19 [Rapid Deceleration
Time]
. When the Run command is turned off during rapid deceleration, rapid deceleration is turned off, and the
motor continues to decelerate at the selected normal deceleration rate.