Siemens SITRANS FC430 Operating Instructions Manual page 167

Channel 2 configured as positive direction and channel 3 set to redundancy mode 180˚
Figure 8-10
Figure 8-11
Redundancy mode (pulse)
If both channel 2 and channel 3 are configured as pulse outputs, channel 3 can be configured
for redundancy mode to follow channel 2 shifted by 90˚or 180˚ of the functional width of the
pulse. If set to redundancy mode, channel 3 inherits all channel 2 settings. The functional width
of the pulse is two times the pulse "On" duration. The flow direction will determine whether
channel 3 is shifted before or after channel 2.
The following examples describe the pulse functionalities for channel 2 and 3 in redundancy
mode:
Channel 2 configured as positive direction and channel 3 set to redundancy mode 90°
Figure 8-12
Figure 8-13
FC430 (From firmware 4.0)
Operating Instructions, 06/2017, A5E39789392-AA
Positive flow - channel 3 leads by 180°
Negative flow - channel 3 lags by 180°
Positive flow - channel 3 leads by 90°
Negative flow - channel 3 lags by 90°
Functions
8.6 Inputs and outputs
167