ADS Environmental Services FlowShark Pulse QR 775004 A1 - Manual (Page 75)

6-30 ADS FlowShark Pulse O&M Manual
Regulator Mode
General
A FlowShark Pulse Model 20 is required for managing flow volume, which is
controlled automatically by the transmitter. The FlowShark Pulse Model 10 has
neither an external setpoint input nor the two digital outputs to drive the regulator
slide valve or digital inputs required for slide valve administration. Therefore, when
operating a Model 10, please use an appropriate external controller and program it
according to the manufacturer’s specifications.
Typically, sluice gate valves, knife gate valves, or iris gate valves are used with an
electrically driven three-step controller. Analog-driven slide valves cannot be used.
ADS recommends selecting gate valves based on the following regulating intervals
(i.e., the time elapsed between a completely open valve and completely closed valve):
</= 300 mm (11.8 in) diameter: minimum 60 seconds
</= 500 mm (19.7 in) diameter: minimum 120 seconds
</= 800 mm (31.5 in) diameter: minimum 240 seconds
</= 1000 mm (39.4 in) diameter: minimum
For proper operation and error monitoring of the slide valve, the Way-End-Switches
must turn OFF and ON and the torque switches must turn ON. These signals must
be connected to the digital inputs of the FlowShark Pulse. Please use gold-plated
contacts to ensure contact reliability. Connect a signal relay between the switches
and the FlowShark Pulse digital input to safely conduct the 10 mA input current.
Analog position feedback to the FlowShark Pulse is not intentional.
The FlowShark Pulse operates as a three-step controller with surge detection, quick-
close control, slide valve monitoring, and automatic flush function.
Digital inputs 4 and 5 are designated, by default, to drive the regulating unit. Digital
output 4 represents slide valve closed, and digital output 5 represents slide valve
open.
Modifying the assignment of the digital outputs is not permitted.
The input current for the digital inputs of the FlowShark Pulse is 10
mA. Ensure contact reliability by selecting appropriate contact
materials for the end switch of the controlled slide valve.