7.1.5 Motor driver overload (DRV Overload)
The STP pump decelerates and stops when the STP pump does not attain the rated speed within
about 30 minutes after starting, or the ACCELERATION state remains during operation for about 30
minutes, and the "STATUS" LED flashes in red.
In the case of the I/O Remote interface, a failure signal also simultaneously outputs from the "X4
REMOTE" connector.
7.1.6 Overheating inside the STP pump (MOTOR Overheat)
The STP pump decelerates and stops when the motor's temperature inside the STP pump is
overheated due to an overload, and the "STATUS" LED flashes in red.
In the case of the I/O Remote interface, a failure signal also simultaneously outputs from the "X4
REMOTE" connector.
7.1.7 Overheating inside the control unit (CNT Overheat)
The STP pump decelerates and stops when the temperature inside the control unit rises due to a
lack of cooling water flow, high water temperature, an external heat source, or failure of an air-
cooling fan, and the "STATUS" LED flashes in red.
In the case of the I/O Remote interface, a failure signal also simultaneously outputs from the "X4
REMOTE" connector.
7.1.8 Overspeed
When the rotational speed of the STP pump exceeds 25,680 rpm due to a failure in the motor driver,
the STP pump changes into free-running and stops, and the "STATUS" LED flashes in red.
In the case of the I/O Remote interface, a failure signal also simultaneously outputs from the "X4
REMOTE" connector.
7.1.9 Abnormality/Error in the TMS unit (for use with the TMS unit)
The "STATUS" LED flashes in red if the temperature of the STP pump base unit is over 10 ºC (18 ºF)
higher than the set value due to a TMS heater failure or other faults. And the heater is switched OFF,
and the cooling water unit works. Then, the STP pump decelerates and stops. Continue to operate
the cooling water unit until the temperature of the pump base is dropped to the set value after the
pump stops.
In the case of the I/O Remote interface, a failure signal also simultaneously outputs from the "X4
REMOTE" connector.
The "STATUS" LED flashes in red if the temperature of the STP pump base unit is under 10 ºC (18
ºF) lower than the set value due to a TMS heater failure or other faults. And The heater and the
cooling water valve are switched off. Then, The STP pump decelerates and stops.
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