STP-iX457/iXU457 Series Turbomolecular Pump
MT-86E-001-F
Page
56
4
OPERATION
4.4 Powering ON
Turn "ON" the external power supply unit. If no error is found, the magnetic bearing functions and the
rotor levitates (POWER ON state). The "STATUS" LED flashes in green (Levitation state).
4.5 Pump operation
4.5.1 Input operation port setting
Set the hardware which operates the STP pump before the operation. The STP pump is equipped with
the parallel port and serial port COM1 (X2 REMOTE connector) as standard hardware for the operation.
The STP-Link (optional accessory) can operate the STP pump via the STP-LINK connector on the front
panel when the power supply unit iPD-240-24V (optional accessory) is connected.
When setting the input operation port to the parallel port, refer to Section 4.8, "Parallel port input/output
signal". When setting to a serial port, refer to Section 5, "Serial Communication Protocol" for
information and methods.
The method of operation with the parallel port (X2 REMOTE connector) is shown below. Follow it after
reading through Section 4.8, "Parallel port input/output signal". When operating the STP pump via
serial communication, refer to Section 5, "Serial Communication protocol".
When operating the STP pump via the STP-Link (optional accessory) or the power supply unit
iPD-240-24V (optional accessory), refer to each Instruction Manual.
4.5.2 Starting/stopping the STP pump
There are the methods of contact input for the starting/stopping operation with the parallel port.
Starting the pump Stopping the pump
Short the circuit between (1)-(6). Open the circuit between (1)-(6).
Table 12 - Starting/stopping the STP pump (X2 REMOTE)
Stop
Rotation
Stop
(1)–(6)
X2 REMOTE
connector
OPEN
CLOSE
Figure 37 - Pump operation method
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