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(23) Number of auto restart attempts (Cn-36)
• Set the number of auto reset/restart operations. Setting to zero causes no auto
reset/restart operation.
• Each time any OC, OV, OL1, OL2, OL3, OH, UV1, OC, GF, OV, rr or UV1 fault
occurs, the number of auto reset/restart operations is incremented by 1, and auto
reset/restart operation is performed according to the following procedure.
• Auto reset/restart operation sequence
1. When a fault is detected, the AC drive output is shut off for the minimum baseblock
time (Cn-40). During shut off of the drive output, a fault occurring in the operator
is displayed.
2. When the minimum baseblock time (Cn-40) elapses, the fault is automatically
reset, and speed search operation is performed with the output frequency at the
time of the fault.
3. When the total number of faults exceed the number of auto restart attempts (Cn-36),
automatic reset is not performed, and the AC drive output is shut off. At this time, fault
contact output is activated.
• The number of auto reset/restart operations is cleared to zero when:
1. No fault occurs for 10 minutes or more.
2. A fault reset signal is inputed from the control circuit terminals or the digital operator.
• Auto reset/restart operation is not performed in the following cases:
1. When operation not continued at momentary power loss (3rd digit of Sn-11=0) is
specified, UV1 fault is not automatically reset.
2. When OC or OV fault occurs due to external fault during deceleration stop or DC
injection braking stop, the AC drive output is shut off.
(24) Power loss ride-thru time (Cn-37)
• Set in units of 0.1 second. The initial value depends on the AC Drive’s capacity.
2-19
PA 7300
PART II: OPERATION MANUAL
Cn-40
SPEED
SEARCH
FAULT
DETECTION
FAULT
CONTACT
OUTPUT
FREQUENCY
MOTOR
SPEED
WHEN 2ND DIGIT OF
Sn-11=1,
FAULT CONTACT IS
OUTPUT.
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 ...
Page 151: ...i PA 7300 INSTRUCTION MANUAL ...
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 ...