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Table 2-1. Open Loop Vector Startup Procedure - Continued
DESCRIPTION
Set motor rated current.
(This can be obtained from
the nameplate of the motor.)
Set the motor rated slip.
This can be calculated by
using the following formula:
Slip = (Ns-Nr) * P
120
Where:
Ns = Motor synch. speed
Nr = Motor rated speed
P = Number of motor poles
Example:
Slip = (1800 - 1725) * 4
120
Slip = 2.5
Prepare to test run the
drive from the Digital
Operator. Motor should be
disconnected from the load.
This will set the drive into the
"Local" mode and bring up
the motor current display.
KEY SEQUENCE
Press and hold
played on the digital operator.
DATA
ENTER
Then press
V
Use the
&
number in the display matches the motor
rated current.
DATA
ENTER
Then press
Press and hold
played on the digital operator.
DATA
ENTER
Then press
(2)
V
Use the
&
number in the display matches the calculated
slip value (see equation at left).
DATA
ENTER
Then press
DSPL
Press and hold
LO/RE
the
LED is lit.
V
Press the
Display the drive's output current by pressing
DSPL
four times. Turn the Digital Operator
Pot all the way to the left (counter-clockwise.
V
until n036 is dis-
.
V
keys until the
.
V
until n106 is dis-
.
V
keys until the
.
several times until
key once.
2-3
DIGITAL OPERATOR
DISPLAY
PRGM
(1)
PRGM
PRGM
(1)
PRGM
LO/RE
LO/RE
IOUT
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