Yaskawa E7 Drive User Manual - Manual (Page 177)

Parameters A - 9
Reference Limits
d2-01
Frequency Reference Upper
Limit
Ref Upper Limit
Determines maximum speed command, set as a percentage of
parameter E1-04. If speed command is above this value, actual drive
speed will be limited to this value. This parameter applies to all speed
command sources.
0.0 to 110.0 100.0% Quick Setting
d2-02
Frequency Reference Lower
Limit
Ref Lower Limit
Determines minimum speed command, set as a percentage of
parameter E1-04. If speed command is below this value, actual drive
speed will be set to this value. This parameter applies to all speed
command sources.
0.0 to 110.0 0.0% Quick Setting
d2-03
Master Speed Reference
Lower Limit
Ref1 Lower Limit
Determines the minimum speed command, set as a percentage of
parameter E1-04. If speed command is below this value, actual drive
speed will be set to this value. This parameter only applies to analog
inputs A1 and A2.
0.0 to 110.0 0.0% Programming
Jump Frequencies
d3-01
Jump Frequency 1
Jump Freq 1
These parameters allow programming of up to three prohibited
frequency points for eliminating problems with resonant vibration of
the motor / machine. This feature does not actually eliminate the
selected frequency values, but will accelerate and decelerate the
motor through the prohibited bandwidth.
0.0 to 200.0
0.0Hz Programming
d3-02
Jump Frequency 2
Jump Freq 2
0.0Hz Programming
d3-03
Jump Frequency 3
Jump Freq 3
0.0Hz Programming
d3-04
Jump Frequency Width
Jump Bandwidth
This parameter determines the width of the deadband around each
selected prohibited frequency point. A setting of "1.0" will result in a
deadband of +/- 1.0 Hz.
0.0 to 20.0 1.0Hz Programming
MOP and Trim Control
d4-01 MOP Ref Memory
0: Disabled
1: Enabled
0 or 1 0 Programming
d4-02
Trim Control Level
Trim Control Lvl Set the percentage of maximum speed to be added or subtracted via
multi-function inputs.
0 to 100 10% Programming
Table A.1 Parameter List (Continued)
Parameter
No.
Parameter Name
Digital Operator Display
Description
Setting
Range
Factory
Setting
Menu
Location
TM_E7_01_07182008.book Page 9 Wednesday, July 23, 2008 2:35 PM