Connectors Cha
ter Two: Installation
34
MFC Connector J8
This 15-pin female Type “D” connector provides the connection for the mass flow device. The
connector provides the necessary power and set point voltages, and receives the flow output
signal.
MFC Connector J8 Pinout
Pin Assignment Description
1 No Connection
2 Flow Input Signal The output from the MFC is applied here
3 No Connection
4 No Connection
5 Power Ground
6 -15 Volts Supplied by the 246 unit
7 +15 Volts Supplied by the 246 unit
8 Set Point Output Signal From the 246 unit to the MFC
9 No Connection
10 Flow Out A 0 to 5 V zero-corrected output sent
back to the MFC for use with the set
point circuitry to ensure that set point
matches the actual flow
11 No Connection
12 Analog Return
13 No Connection
14 No Connection
15 Chassis Common
Table 8: MFC Connector J8 Pinout
Note
The “No Connection” pin assignment refers to a pin with no internal
connection.
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