Siemens HydroRanger 200 HMI - Alternate Duty Assist

Pump control reference
B.7 Alternate Duty Assist
HydroRanger 200 HMI
316 Operating Instructions, 06/2018, A5E36281317-AC
B.7
Alternate Duty Assist
Relay function (2.8.1.4.) (Page 195) = Alternate Duty Assist alternates the lead pump each
time the material level cycles and runs all pumps together.
Relay operation
(for
Relay logic (2.8.1.11.) (Page 199)
= Positive)
The setpoints associated with the relays are grouped so that they can be rotated.
Setpoint 1 does not relate directly to Relay 1. The pumping algorithm manages the mapping
of setpoints to relays.
When pumps are run, they RUN in parallel.
Relay table
Cycle 1
Relays
Setpoints
1
2
3
ON 3 ON ON ON
ON 2
ON
ON
OFF
ON 1
ON
OFF
OFF
OFF
OFF
OFF
OFF
Cycle 2
Relays
Setpoints
1
2
3
ON 3
ON
ON
ON
ON 2
OFF
ON
ON
ON 1
OFF
ON
OFF
OFF
OFF
OFF
OFF
Cycle 3
Relays
Setpoints
1
2
3
ON 3
ON
ON
ON
ON 2
ON
OFF
ON
ON 1
OFF
OFF
ON
OFF
OFF
OFF
OFF