ABB SensyMaster FMT430 Operating Instructions Manual page 63

SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B
Current output V3 / V4 active
When the 'loop power supply 24 V DC, blue' plug-in card is used,
the current output on the plug-in card can also be wired as the
active current output.
A 'Loop power supply (blue)' plug-in card in slot 1
B 'Passive current output (red)' plug-in card in slot 2
Figure 56: Active current output V3 / V4 (example)
Digital input V3 / V4 active
When the 'loop power supply 24 V DC, blue' plug-in card is used,
the current output on the plug-in card can also be wired as the
active current output.
A 'Loop power supply (blue)' plug-in card in slot 1
B 'Passive digital input (yellow)' plug-in card in slot 2
Figure 57: Active digital output V3 / V4 (example)
Connection versions digital output 41 / 42, 51 / 52
Depending on the wiring of digital outputs DO 41 / 42 and
51 / 52, they can be used parallel or only individually. The
electrical isolation between the digital outputs also depends on
the wiring.
Figure 58: Connection versions digital output 41 / 42 and 51 / 52
DO 41 / 42 and 51 / 52 can be
used parallel
A
Yes
B
Yes
C
No, only DO 41 / 42 can be used
D
No, only DO 51 / 52 can be used
Table 3: Connection versions digital output
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DO 41 / 42 and 51 / 52
electrically isolated
No
Yes
No
No