YASKAWA V7 User Manual

2-5
DIGITAL OPERATOR
DESCRIPTION KEY SEQUENCE DISPLAY
Table 2-1. Open Loop Vector Startup Procedure - Continued
Set the motor “no load cur-
rent” in the drive.
Motor no load current is set
as a percentage of motor
rated current. It is calculated
using the formula:
I
noload
*100 = n110
I
rated
Where:
I
noload
=Motor no load current
(measured in the
previous step)
I
rated
= Motor rated current
(from motor
nameplate)
Example:
2.5 * 100
= 60
4.2
Press the key four times.
DSPL
This completes the startup.
Make further programming
changes as required.
Press the key to get out of the pro-
gramming mode.
DSPL
(1)
The number in the display may be different than shown.
(2)
Motor synchronous speed can be calculated using the following formula:
120 x motor r
ated frequency
synch. speed =
number of motor poles
For 60 Hz Rated Motors
P
oles Synchronous Speed
2 3600 RPM
4 1800 RPM
6 1200 RPM
8 900 RPM
PRGM
PRGM
PRGM
PRGM
FREF
Press the key.
DATA
ENTER
Press the key.
Use the & keys until the
number in the display matches calculated no-
load current.
V
V
DATA
ENTER
Press the key four times.
V
(1)
(1)

YASKAWA V7 Specifications

General

Model	V7
Category	Controller
Manufacturer	Yaskawa
Output Frequency	0.1 to 400 Hz
Type	AC Drive
Horsepower	0.5 to 300 HP
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheating, Short Circuit
Communication Interfaces	DeviceNet, Profibus, Ethernet
Operating Temperature	-10°C to 50°C
Humidity	5% to 95% (non-condensing)
Enclosure Rating	IP20
Voltage Class	200V, 400V
Storage Temperature	-20°C to 65°C