Table of Contents
Advertisement
3 Startup Procedure and Test Run
MFDI
H1-xx
Setting
3A
Micro Speed Gain1
3B
Micro Speed Gain2
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.
Note:
• This function does not operate when the frequency reference is negative by using an analog input. To use rapid deceleration, the
frequency reference must be at least 0.
• Rapid deceleration is disabled when b1-04 = 1 [Reverse Disabled].
• The deceleration time set to C1-09 [Fast Stop Time] has priority in the following scenarios.
–Emergency stop operation has been executed by the detection of a fault
–The emergency stop command has been received from MFDI.
• The setting range of acceleration/deceleration time is determined by the setting of C1-10 [Accel/Decel Time Setting Units]. When C1-
10 = 0 (units of 0.01 seconds), the setting range of the acceleration/deceleration time is between 0.00 and 600.00 seconds.
202
Name
When the corresponding terminal is on, the frequency reference is
multiplied by the gain set to S2-16 [Micro Speed Gain1].
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.
YASKAWA ELECTRIC SIEP C710617 19A YASKAWA AC Drive CR700 Technical Manual
Description
Advertisement
Table of Contents
