Santerno Sinus Penta - Page 456

SINUS PENTA
PROGRAMMING GUIDE
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A046 Bypass Connector Fault
A046 Description Precharge bypass connector fault.
Event
Auxiliary signal for the closing of the bypass connector of the short-circuit precharge
resistor is considered as closed before the relevant closing command is sent.
See also A045.
Possible
cause
• Precharge bypass connector reversed.
• Precharge relay/contactor failure.
Solution
1. Reset the alarm: send a RESET command.
2. If the alarm persists, please contact ELETTRONICA SANTERNO’s Customer
Service.
A047 Undervoltage
A047 Description DC bus Voltage lower than minimum voltage.
Event
Voltage measured in DC bus capacitors has dropped below the min. value allowed
for a proper operation of the drive class being used.
Possible
cause
• Supply voltage has dropped below 200Vac–15% (class 2T), 380V–15% (class
4T), 500V –15% (class 5T), 600Vac –5% (class 6T).
• Alarm A047 can trip even when voltage temporarily drops below the allowable
min. value (which is caused for example by the direct starting of the connected
load).
• If the drive is powered directly by the bus bar, the bus feeder is responsible for
the alarm.
• Failure in DC bus voltage measure circuit.
Solution
1. Check voltage in terminals R, S, T. Check mains voltage value M030 and DC bus
voltage value M029. Also check the values of M030 and M029 sampled in the
FAULT LIST when the alarm tripped.
2. If the alarm persists, please contact ELETTRONICA SANTERNO’s Customer
Service.