TECO-Westinghouse PA7300 Series, Installation And Operation Manual

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3. FAULT DISPLAY AND TROUBLESHOOTING
The PA7300 has protection function and warning self-diagnosis function. If a fault a occurs, the protection
functions operate to shut off the AC Drive output and the motor coasts to a stop. At the same time, the fault
contact signal (terminal R3A-R3C, R3B-R3C).
A). PROTECTION FUNCTION AND TROUBLESHOOTING
PROTECTION FUNCTION EXPLANATION
LCD DISPLAY
(ENGLISH )
Main circuit When the AC Drive power voltage drops, torque becomes insufficient and the
low voltage motor is overheated.
AC Drive output is stopped when the main circuit DC voltage becomes lower
Low Momentary* 2 than the low voltage detection level for 15 ms or longer, or about 2 seconds Fault (UV1)* 1
voltage power loss or longer if the momentary power loss ride-thru function is used. DC Volt. Low
protection protection Detection level: Approximately 210V or less for 200V class
and 420V or less for 400V class
Control circuit The AC Drive output is shut-off when the control circuit voltage drops below Fault (UV2)* 1
low voltage the low voltage level. C/B DC Volt. Low
Man circuit The AC Drive output is shut-off when no answer back is received from the Fault (UV3)* 1
soft charge main circuit soft-start contactor. MC Ans. Fault
contactor defective
The AC Drive output is shut off when the AC Drive output current exceeds Fault (OC)* 1
Overcurrent protection* 2 approx. 200% of AC Drive rated current. Over Current
The AC Drive output is shut off when a ground-fault occurs at the AC Drive Fault (GF)* 1
Ground-fault protection* 2 output side and the ground-fault current exceeds approximately 50% of the Ground Short
AC Drive rated current.
The AC Drive output is shut off when the main circuit DC voltage exceeds
excessive because of regeneration energy caused by motor deceleration Fault (OV)* 1
Overvoltage protection* 2 and negative load. Over Voltage
Detection. Approx. 800V for input voltage set 400V and above
Level : Approx. 700V for input voltage set 400V or less and approx. 400V
for 200V class
The AC Drive output is shut off when the ambient temperature rises and the Fault (OH)* 1
Cooling fin overheat* 2 heat sink fin reaches 90 °C . Please check for a detective cooling fan or Over Heat
clogged filter.
AC Drive output is stopped when motor overload is detected by the
electronic thermal overload in the AC Drive. Either an AC Drive duty constant Fault (OL1)* 1
Motor* 2 torque specialized motor or general-purpose motor can be selected. If more Motor Over Load
than one motor is driven. overload protection should be disabled. Use a
Overload thermal relay or thermal protector for each motor.
protection AC Drive* 2 The AC Drive output is shut off when the electronic thermal overload reaches
or exceeds the inverse time limit of 103% of the AC Drive’s rated current Fault (OL2)* 1
occurs. Maximum rated overload: 110%. 1 min. AC Drive Over Load
Over torque* 2 The motor operates according to a preset mode when the AC Drive output
detection current exceeds the overtorque detection level. This function is used to Fault (OL3)* 1
protect the machine or to monitor the output torque. Over Torque
Terminal 3 Fault (EF3)* 1
External Fault 3
Terminal 5 Fault (EF5)* 1
External External Fault 5
fault Terminal 6 When an external alarm signal is asserted. the AC Drive operates according to a Fault (EF6)* 1
signal preset stop method (coasting to a stop, continuous operation or ramp to stop) External Fault 6
input Terminal 7 Fault (EF7)* 1
External Fault 7
Terminal 8 Fault (EF8)* 1
External Fault 8
Control Fault (CPF02)* 1
Circuit Fault Logic board Fault
EEPROM Fault (CPF03)* 1
fault EEPROM Fault
EEPROM
BCC CODE Fault (CPF04)* 1
Control Error EEPROM CODE Err.
Circuit CPU ADC The AC Drive output is shut off when a transmission error occurs in the Fault (CPF05)* 1
Fault Fault control circuit or a component fails. The AC Drive output is also shut off A/D Fault
Option Card when a specialized option such as the digital operator is not properly connected. Fault (CPF06)* 1
Fault Opt. Card A/D Fault
3-1
PA 7300 PART II: OPERATION MANUAL