Edwards SCU-1600 - REMOTE X7 Input Signal Pins; 30 Operational Procedures

SCU-1600 Control Unit for Turbomolecular Pump
March 10 54 Issue 1-a
4
OPERATION
(3)
(21)
(22)
(5)
(4)
(23)
(1)
(2)
(20)
(31)
(34)
+12V
+12V
+12V
+12V
+12V
+12V
2.2kΩ
2.2kΩ
2.2kΩ
2.2kΩ
2.2kΩ
2.2kΩ
+12V
START IN
STOP IN
RESET IN
INHIBIT IN
OPT1 IN
OPT2 IN
COM (0V)
A
B
C
E
G
D
F
A. In case of Start 1) B. In case of Start 2) C. RESET signal
D. Rotation INHIBIT signal E. Unused pins F. Second speed select signal
Figure 31 - REMOTE X7 input signal pins
Note: 1 pin (0V) is insulated from the frame ground.
Note: The input current of remote input signal is approximately 5 mA. Make sure the minimum
applicable load of the relay contact when the remote operation with the relay.
Note: It is recommended to use a remote cable with shield type, and connect both terminals to the
ground.