STP-H600/H1000 Series Instruction Manual
Abnormality
/Error
Operation state of safety
functions
Lamp indication
REMOTE
output signal
State of the STP pump
Probable causes of an
abnormality/error
Overheating
inside the
STP pump
Temperature of the STP
pump motor: 110
℃
or
more
"OVER
TEMPERATURE"
"FAILURE"
"ALARM"
The STP pump stops.
Abnormal baking temperature.
Insufficient cooling.
Leakage of vacuum equipment
or piping.
Continuous repetition of
startup/shutdown.
Extraordinarily-high
temperature.
Overheating
inside the
STP control
unit
90
℃
or more in the STP
control unit and heat sink.
"FAILURE"
"ALARM" The STP pump stops.
Failure in the cooling fan.
Shielding of cooling air inlet
and ventilation port.
Extraordinarily-high
temperature
Overspeed
Rotational speed of the STP
pump:37,500 rpm or more.
"FAILURE"
"ALARM" The STP pump stops.
Failure in the inverter.
Abnormal
battery
terminal
voltage
Battery terminal voltage:
42 V or lower
("EMERGENCY
OPERATION" or
"BATTERY NG"
lamp may light)
"ALARM" The STP pump does not start.
Incorrect connection of the
battery.
Battery capacity became less
than operating limit value.
*1
: When capacity of battery is less than operating limit value largely, there may be the thing that battery abnormal detection does not operate.
*2
: When the power is turned on again, this lamp goes out.
6-9