MTS Multi-Pump Control Manager Remote Human-Machine Interface - Manual (Page 27)

Run On Demand Detailed Example
Remote Human Machine Interface Operation 25
Run On Demand Detailed Example
Run On Demand (ROD) is a system that monitors the output flow of the
Hydraulic Power Unit (HPU) and turns on and off pumping modules as needed to
best meet the users demands. The parameters for ROD that need to be set by the
user include:
• On Delay: the period of time that must pass where the criteria are met or
exceeded before the next module(s) will be turned on.
• Off Delay: the period of time that must pass where the criteria are met or
exceeded before the next module(s) will be turned off.
• Module Flow: the flow capability of a single pumping module within the
HPU (see table).
• Minimum Flow: the minimum flow capacity that should be available when
the HPU is on.
• Buffer Flow: the minimum flow that should be available beyond the actual
current flow. (6 gpm is added to this value in order to compensate for the
circulation pump within the HPU).
For reference in setting up run on demand, the following table shows the flow
capacity of the available pump modules.
Frequency
Pressure
21 MPa
3000 psi 27.5 MPa
4000 psi 34.4 MPa
5000 psi
50 Hz 100 lpm
26 gpm
75 lpm
20 gpm
50 lpm
13 gpm
60 Hz 113 lpm
30 gpm
85 lpm
22 gpm
61 lpm
16 gpm