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1st digit = 0:
Input Phase Loss protection function ineffective.
1st digit = 1:
Input Phase Loss protection function effective.
•
2nd digit
(Output Phase Loss Protection, OPL)
The output phase loss protection function is disabled while the AC drive is stopped, during DC
injection braking, or when AC drive output current ≤ 30% of AC drive rated output current.
The effectiveness or ineffectiveness of output phase loss protection function can also be
selected by the 2nd digit of Sn-13.
2nd digit = 0:
Output Phase Loss protection function ineffective.
2nd digit = 1:
Output Phase Loss protection function effective
• 3rd digit
(Heat Sink Cooling Fan ON/OFF Control)
3rd digit = 0:
AC drive heat sink cooling fan runs while the drive power is ON.
3rd digit = 1:
AC drive heat sink cooling fan runs only while the heat sink temperature is
higher than 50 . ˚C
(14) Protective Characteristics Selection 5 (Sn-14)
•
1st digit (
motor protection)
1st digit = 0:
Electronic thermal motor protection is enabled.
1st digit = 1:
Electronic thermal motor protection is disabled.
•
2nd digit
(selection of electronic thermal characteristics)
2nd digit = 0:
Electronic thermal characteristics are in accordance with reduced torque
motor (standard motor).
2nd digit = 1:
Electronic thermal characteristics are in accordance with constant torque
motor (special motor).
•
3rd digit
(electronic thermal time constant)
3rd digit = 0:
Used for standard motors or special motors (standard-time ratings, 8 minutes)
3rd digit = 1:
Used for motors other than the above (short-time ratings, 5 minutes)
• The electronic thermal overload function monitors motor temperature, based on the
AC drive output current and time, to protect the motor from overheating. When
electronic thermal overload relay is enabled, an “OL1” error occurs, shutting off the
AC drive output and preventing excessive overheating in the motor.
• When operating with one AC drive connected to a single motor, an external thermal relay is
not needed. When operating several motors with one AC drive, install a thermal relay on
each motor. In this case, set constant Sn-14=XXX1.
•
4th digit
(Not used)
2-45
PA 7300
PART II: OPERATION MANUAL
Summary of Contents for PA7300 Series
Page 9: ......
Page 10: ...PART I INSTALLATION MANUAL ...
Page 44: ...PART II OPERATION MANUAL ...
Page 107: ...2 57 PA 7300 PART II OPERATION MANUAL REDUCTION COEFFICIENT ...
Page 116: ...2 66 PA 7300 PART II OPERATION MANUAL 2 5 Monitoring Peramiters UN ...
Page 117: ...2 67 PA 7300 PART II OPERATION MANUAL ...
Page 150: ...i PA 7300 INSTRUCTION MANUAL ...
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Page 152: ...i PA 7300 INSTRUCTION MANUAL ...
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Page 154: ...5100 N IH 35 Round Rock Texas 78681 USA 1 800 279 4007 www tecowestinghouse com ...