Delta MMC120 - Manual (Page 72)

Hydraulic System Problems MMC120 Linear Motion Control Module
72 Delta Computer Systems, Inc. 360/254-8688
If the speeds show:
Your valve may have slow response. Change to a faster valve or add Acceleration Feed Forward.
With normal gain values, if the graph shows:
Your pump and/or accumulator may be inadequate (you are running out of oil). Reduce speed, increase pump
pressure, add accumulator volume, or get a bigger pump.