Siemens HydroRanger 200, Instruction Manual

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7ML19985FC03 HydroRanger 200 – INSTRUCTION MANUAL Page 239
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Appendix D:
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Appendix D: Pump Control Reference
Please note that some pump control features apply to the HydroRanger 200, 6 relay
model.
The HydroRanger 200 has the pump control strategies to solve nearly any water /
wastewater application. This section details these strategies for engineers requiring in-
depth knowledge of the system and how it operates.
Pump Control Options
The various methods of pump control are made up of a combination of two control
variables:
Pump Duty
The pump duty indicates in what sequence pumps are started.
Pump Start Method
The start method indicates whether new pumps start and run with any currently running
pumps (most common) or whether new pumps start and shut off currently running
pumps.
Pump Groups
The HydroRanger 200 groups pumps that use identical pumping strategies based on the
value of Relay Control Function (P111). Generally, one group of pumps corresponds to one
wet well or reservoir.
Pump by Rate [6 relay model]
Please note that this feature applies to the HydroRanger 200, 6 relay model.
To trigger pump starts by the rate of change in material level use P121–Pump by Rate
(P121). New pumps are started, one at a time, until the rate setpoint (Filling Indicator
(P702), or Emptying Indicator(P703)) is reached.
Pump Control Algorithms
Please note that the HydroRanger 200, 1 or 3 relay model, and the HydroRanger 200, 6
relay model, use this feature differently.
HydroRanger 200 - 1 or 3 relay model
All of these algorithms can be used to start multiple pumps (assist).
HydroRanger 200 - 6 relay model