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● Fraction B (Volume flow or Mass flow)
● Fraction A %
● Fraction B %
● Control valve *
The process variable listed above with * is not available to be allocated to the 4 to 20 mA output
on Channel 1. All process variables are available through bus communication (SV, TV and QV
variables) and on all of Channels 2 to 4.
The accuracy specified for the analog output signal applies only within the range 4 to 20 mA.
Lower limit (4 mA) and upper limit (20 mA) can be assigned to any specific flow values.
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①
Linear control range
②
Measuring range lower limit
③
Measuring range upper limit
④
Lower fault current value
⑤
Recommended setting range for lower fault current
⑥
Recommended setting range for upper fault current
⑦
Measuring range
Figure 8-7
Current limits for NAMUR configuration
The fail safe current output signal can be selected to:
● Minimum Current (defined in the Current Mode selection)
● Maximum Current (defined in the Current Mode selection)
● Last Good Value (the last process value before the failure occurred)
Functions
8.6 Inputs and outputs
FC430 (From firmware 4.0)
160
Operating Instructions, 06/2017, A5E39789392-AA