Yaskawa AC Drive P1000 Bypass Technical Manual - Manual (Page 109)

5.5 E: Motor Parameters
E parameters cover V/f pattern and motor data settings.
u E1: V/f Pattern for Motor 1
n E1-01: Input Voltage Setting
Adjusts the levels of some protective features of the drive (overvoltage, Stall Prevention, etc.). Set this parameter to the nominal
voltage of the AC power supply.
NOTICE: Set parameter E1-01 to match the input voltage of the drive. Drive input voltage (not motor voltage) must be set in E1-01 for the
protective features to function properly. Failure to set the correct drive input voltage will result in improper drive operation.
No. Parameter Name Setting Range Default
E1-01 Input Voltage Setting 310 to 510 V 460 V <1>
<1> Values shown are specific to 480 Vac bypass drives.
E1-01 Related Values
The input voltage setting determines the overvoltage and undervoltage detection levels, the KEB function, and the overvoltage
suppression function.
Voltage Setting Value of E1-01
(Approximate Values)
Uv Detection Level (L2-05)
208 Vac Bypass Drives All settings 190 V
480 Vac Bypass Drives Setting > 460 V 440 V
n V/f Pattern Settings (E1-03)
The drive uses a V/f pattern to adjust the output voltage relative to the frequency reference. There are 15 different predefined
V/f patterns (setting 0 to E) from which to select, each with varying voltage profiles, saturation levels (frequency at which
maximum voltage is reached), and maximum frequencies. Additionally, one custom V/f pattern is available (setting F) that
requires the user to create the pattern using parameters E1-04 through E1-10.
n E1-03: V/f Pattern Selection
Selects the V/f pattern for the drive and motor from 15 predefined patterns or creates a custom V/f pattern.
No. Parameter Name Setting Range Default
E1-03 V/f Pattern Selection 0 to 9; A to FF F
Setting a Predefined V/f Pattern (Setting 0 to F)
Choose the V/f pattern that best meets the application demands from the table below. Set the correct value to E1-03. Parameter
E1-05 can only be monitored, not changed.
Note: 1. Setting an improper V/f pattern may result in low motor torque or increased current due to overexcitation.
2. Drive initialization does not reset parameter E1-03.
Table 5.9 Predefined V/f Patterns
Setting Specification Characteristic Application
0 50 Hz
Constant torque
For general purpose applications. Torque remains constant
regardless of changes to speed.
1 60 Hz Saturation
2 50 Hz Saturation
3 72 Hz (with 60 Hz base)
4 50 Hz, Variable torque 1
Variable torque
For fans, pumps, and other applications where the required
torque changes as a function of the speed.
5 50 Hz, Variable torque 2
6 60 Hz, Variable torque 1
7 60 Hz, Variable torque 2
5.5 E: Motor Parameters
YASKAWA SIEP YAIP1B 01A YASKAWA AC Drive – P1000 Bypass Technical Manual 109
5
Programming