Siemens HydroRanger 200 Bedienerhandbuch Seite 242

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Page 228 HydroRanger 200 – INSTRUCTION MANUAL 7ML19981FC01
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Appendix D: Pump Control
Alternate
Starts pumps based on the duty schedule and always leads with a new pump.
Service Ratio
Starts pumps based on user-defined ratio of running time.
Fixed Duty Assist (P111 = 50)
Ties the indexed pump relay directly to the indexed setpoint.
Relay Operation (for P118 = 2)
The relay contact closes at the ON setpoint and opens at the OFF setpoint. Multiple relay
contacts in the pump group can be closed at the same time.
Relay Table
The following table shows relay status when each setpoint is reached.
Fixed Duty Backup (P111 = 51)
Ties the indexed pump relay directly to the indexed setpoint.
Relay Operation (for P118 = 2)
The relay contact closes at the ON setpoint and opens at the OFF setpoint. When a new
relay trips the previously closed relay contact opens to shut down the running pump.
Only one relay contact in the pump group can be closed at any one time.
Relays
Setpoints
Index
123
On 3 On On On
On 2 On On Off
On 1 On Off Off
Off 0 Off Off Off
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