STP-iX455/iXL455 Series Instruction Manual
11-3
Troubleshooting
11.5 Overheating inside the STP Pump (MOTOR Overheat)
When the temperature of the motor inside the STP pump exceeds 110 °C due to an
overload, the STP pump decelerates and stops.
The "FAILURE" LED (red) flashes, and a failure signal is output from the "X2
REMOTE" connector.
11.6 Overheating inside the Control Unit (CNT Overheat)
When the temperature inside the control unit exceeds 80 °C due to a ventilation
malfunction, external heat source, failure of an air-cooling unit (optional accessory), or
other event, the STP pump decelerates and stops.
The "FAILURE" LED (red) flashes, and a failure signal is output from the "X2
REMOTE" connector.
11.7 Overspeed
When the rotational speed of the STP pump exceeds 58,500 rpm due to a failure in the
motor driver, the STP pump decelerates and stops.
The "FAILURE" LED (red) illuminates, and a failure signal is output from the "X2
REMOTE" connector.
◇ The flashing pattern of the "FAILURE" LED (red) indicates the type of failure.
Refer to Section 13, "Troubleshooting, Maintenance, and Inspection" for details.
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