Ifc (Intelligent Flow Controller) - Eaton CMA User Manual

CMA User Manual
Table 19 . Applicable parameters
Object dictionary name
UFC Decompression Offset
UFC Decompression Offset Percent
UFC Gain for Work Port 1
UFC Gain for Work Port 2

6.2.2 IFC (Intelligent flow controller)

6.2.2.1 General overview
The Intelligent Flow Controller (IFC) is the preferred twin
spool mode for most applications/services. For passive
loads, the controller utilizes a meter in control strategy while
just maintaining a pressure on the opposite port.
6.2.2.2 Detailed function
The following figure gives an overview of operation for the
IFC controller.
Figure 10 .
LS Demand = Tank Press + P
Setpoint + LS Mar
Sp Mode = IFC Pres Ctrl
1
Sp Dem = IFC Pres Dem
1
Sp Mode = Q Ctrl
2
Sp Dem = AR * TSP Dem
2 fs
22
CMA USER MANUAL E-VLMB-TT005-E April 2019 www.eaton.com
J1939 section index
924
925
922
923
PV axis control (IFC)
TSP Demand <> 0
fs
Yes
Flow
1 to 2
Yes
No
Pass
Load
Yes
Pres
1 LS Demand = P Pres + LS Mar
1
Sp Mode = Q Ctrl
1
Sp Dem = TSP
1 fs
Sp Mode = IFC Pres Ctrl
2
Sp Dem = IFC Pres Dem
2
P > Pres Max
1
LS Demand = P Pres + LS Mar
1
Sp Mode = P Ctrl
1
Sp Dem = Pres Maximum
1
Sp Mode = OL Pres Ctrl
2
Sp Dem = IFC Pres Dem
2
CANOpen object Suggested default value
0x439C 100
0x439D 50
0x439A 110
0x439B 110
For an overrunning load, the control applies a meter out
control strategy and will hold a constant pressure on the
upstream port.
No
No
Pass
Load
Yes
LS Demand = P
Sp Mode = IFC Pres Ctrl
1
Dem Sp Dem = IFC Pres Dem
1
Sp Mode = Q Ctrl
2
Sp Dem = TSP
2
Q > Q P > Pres Max
1 dem 2
LS Demand = P
Sp Mode = P Ctrl
2
Sp Dem = Pres Maximum
2
Sp Mode = OL Pres Ctrl
1
Sp Dem = IFC Pres Dem
1
Units
microns
Percent
Unitless
Unitless
LS Demand = LS Standby
Sp Mode = Pos Ctrl
1
Sp Dem = Center Pos
1
Sp Mode = Pos Ctrl
2
Sp Dem = Center Pos
2
No
LS Demand = Tank Press + P
Pres + LS Mar
2
Setpoint + LS Mar
Sp
1
Sp Dem = AR * TSP
1
Sp Mode = IFC Pres Ctrl
Dem 2
fs
Sp Dem = IFC Pres Dem
2
Q > Q
2 dem
Pres + LS Mar
2
Valid range
0...3000
0...100
50...150
50...150
Pres
2
Mode = Q Ctrl
Dem
fs