STP-iS2207 Series Turbomolecular Pump
MT-89E-001-C
Page 132
7
SAFETY FUNCTIONS
7.1.8 Overspeed
When the rotational speed of the STP pump exceeds 38,000 rpm due to a failure in the motor driver,
the STP pump changes into free-running and stops.
The "FAILURE" LED (red) illuminates, and a failure signal is output from the "X2 REMOTE"
connector.
7.2 "WARNING" function
7.2.1 "WARNING" function
The STP pump is provided with a WARNING function when an overhaul is needed following a self-test
as shown in Table 34.
The type of warning is indicated by flashing pattern of the "FAILURE" LED (orange).
When two or more warnings are detected simultaneously, a high-priority warning is indicated. Also,
the warning signal is output from the "X2 REMOTE" connector.
The serial communication, the STP-Link (optional accessory), or the display unit iDT-001 (optional
accessory) can confirm the error message, and change the settings.
Refer to Section 5, "Serial Communication Protocol", the STP-Link or the display unit iDT-001
Instruction Manual of the optional accessories for details.
No
Warning
"FAILURE" LED
indication
Priority
1
Other Warning
(Other warnings)
Steady orange High
2
First Damage Limit
Second Damage Limit
(Touch down bearing warning function)
3 flashes in orange
3
Pump Run Time Over
(Pump runtime warning function)
2 flashes in orange
4
Pump Overload
(Pump overload warning function)
5
Imbalance
(Excessive imbalance warning function)
1 flash in orange Low
Table 34 - WARNING function
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