ADS Environmental Services FlowShark Pulse QR 775004 A1 - Manual (Page 80)

Installation 6-35
The input current per digital input is 10 mA.
When driving the slide valves via the digital inputs, always use all
three messages. Activating only one message may destabilize
regulator operation.
The regulator can operate with an external or internal setpoint. When using external
setpoints, always route them to analog input 4.
When using a 4-20 mA signal as an external setpoint, monitor the signal for cable
breaks and short circuits. If errors occur, the FlowShark Pulse will access the internal
setpoint. Always set the internal setpoint when using external 4-20 mA setpoints and
error monitoring.
The following equation can be used for the internal calculation for slide valve control
time:
maximum slide valve runtime
control time = (setpoint – flow
actual value
) • P_factor •
maximum flow