5700512-C I/O Connections and Communication 4-9
Series FC-77X / 77XX, Series FC-78X / 78XX, and Series FC-79X MFCs
CARD EDGE PURGE FUNCTION SIGNALS
For the card edge connector, MFCs with normally open and normally closed valves
require inverse connections. Be sure to connect the signal properly. (To check whether
an MFC is normally closed or normally open, see “Model Numbers for this Manual”
on page 1-1.) Figure 4-5 shows the connections. Figure 4-6 and Figure 4-7 show the
internal circuitry for normally open and normally closed MFCs, respectively.
Figure 4-5. Card edge purge function signals
Figure 4-6. Card edge normally open internal circuitry for purge function
To disengage this function, disconnect the MFC terminal.