Electrical Connections
Chapter Three: Overview
32
9-Pin Type “D” Connector
Table 8 lists the pinout of the 9-pin Type “D” connector for a mass flow controller.
9-Pin Type “D” Connector Pinout
Pin Number
Assignment
1
Valve Open/Close*
2
Flow Signal Output
3
+15 V
4
Power Common
5
-15 V
6
Set Point*
7
Signal Common
8
Signal Common
9
MKS Test Point*
* For an MFC only, No Connection for an MFM
Table 6: 9-Pin Type “D” Connector Pinout
Note
1.
Chassis ground is not available on a separate pin. Instead, it is
carried out through the cable shielding. Be sure that the connector on
the other end of the cable is properly grounded to its chassis ground.
2.
The 0 to 5 VDC flow signal output comes from pin 2 and is
referenced to pin 7 (signal common).
3.
Use any appropriate 0 to 5 VDC input signal of less than 20K ohm
source impedance referenced to pin 7 as the set point signal to pin 8.
Содержание Mass-Flo 1179A
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