Edwards SCU-350 Series

SCU-350 Series Control Unit for Turbomolecular Pump
MT-21E-201-E
Page 49
4
OPERATION
4.5.3 CON4 connector (for SCU-350H/350HA only)
This is a connector for remote input/output signals.
This connector can maintain compatibility with the remote I/O signal of the STP-200/300/400 series.
The remote input signal from the CON 4 connector is valid by setting No.4 switch to "ON", and No.5
switch of the DSW-B on the top panel to "OFF". In this case, remote input from I/O TB2 terminal and
pump operation by serial communication from CON3 connector (optional accessory) are invalid.
(Refer to Figure 11 for the position of "DSW-B".)
This connector is GP-IB type
*1
(24pin).
Note: It is recommended to use a remote cable with shield type, and connect both terminals to the
ground.
4.5.3.1 Remote input signals
Use input signals according to Table 11, Table 12 and Figure 30. See Section 4.5, "Remote operation".
This input signal is valid only when No.4 of the DSW-B is "ON" and No.5 of the DSW-B is "OFF" in the
remote operation.
Three abbreviations are used in Table 11 and Figure 30:
IN: Input Terminal
N.O OUT: Normal Open Output Terminal
N.C OUT: Normal Close Output Terminal
COM: Common
*1
General Purpose - Interface Bus (Conforms with IEEE-STD-488-1978 standard)