Service Ratio Duty Assist (P111 = 54) [6 Relay Model] - Siemens HydroRanger 200 Instruction Manual

Relay Table
Cycle 1
On 3
On 2
On 1
0ff 0
Cycle 2
1
On 3
On 2
On 1
Off 0
Cycle 3
On 3
On 2
On 1
Off 0

Service Ratio Duty Assist (P111 = 54) [6 relay model]

Selects the lead pump based on number of hours each pump has run and the specified
ratios that each pump requires. Multiple pumps can run at one time.
Please note that this feature applies to the HydroRanger 200, 6 relay model.
Relay Operation (for P118 = 2) [6 relay model]
Please note that this feature applies to the HydroRanger 200, 6 relay model.
The setpoints associated with the relays are grouped so they can be redistributed based
on pump RUN time ratios. The next pump to start or stop is the one with the required time
to actual time ratio.
Over time the number of hours demanded of each pump will conform to the ratios
specified. Usually, the ratios are specified in percent values.
To create a grouping of pumps where two pumps make up 50% of the run time and the
third pump makes up the other 50%.
P122 is set to these values:
P122 Index
1
2
3
Page 242
Relays
1 2
Off Off On
Off On Off
On Off Off
Off Off Off
Relays
2 3
On Off Off
Off Off On
Off On Off
Off Off Off
Relays
1 2
Off On Off
On Off Off
Off Off On
Off Off Off
Value
25
25
50
HydroRanger 200 – INSTRUCTION MANUAL
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