MCV111B
Electrical Displacement Control-PV
Series 90
BLN-95-8995-4 Issued: September 1996
DESCRIPTION
The MCV111B Electrical Displacement Control (EDC) is a two-stage electrohydraulic pump stroke control which uses mechanical feedback to establish closed loop control of the swashplate angle of Danfoss Series 90 Pumps.
The first stage, the MCV110 Pressure Control Pilot (PCP) is a torque-motor actuated, double-nozzle flapper valve that produces a differential output pressure proportional to the
applied electrical signal. The second stage uses the differential pressure to drive its unique spool arrangement and port oil to the pump servo cylinders. The second-stage spool configuration allows a null deadband (for machine safety) in the pump’s output while maintaining optimum dynamic response to control commands.
FEATURES
• Servo control deadband independent |
of signal null • |
Minimum long term null shift |
deadband: offers safety combined with accurate and |
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responsive control |
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Dualcoiltorquemotorcanbeusedtosumtwocommand |
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•Resistance to the environment: standard silicone oil filled torque motor, environmentally sealed first/second stage interface, full environmental testing
ORDERING INFORMATION
TheMCV111BElectricalDisplacementControlisorderedby specifying the pump size and pilot type as shown in Table A. Consult Danfoss, Minneapolis, MN, with further questions.
TABLE A. INFORMATION NECESSARY TO SPECIFY THE EDC.
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MCV111B |
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BASE |
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DEVICE |
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PUMP |
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SIZE |
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PILOT STYLE |
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1. PUMP SIZE |
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MODEL CODE |
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PUMP SIZE |
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03 |
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30 cc |
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05 |
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42 or 55 cc |
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07 |
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75 cc |
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10 |
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100 cc |
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13 |
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130 cc Pump S/N < 92 - 19 |
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14 |
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130 cc Pump S/N ≥ 92 -19 |
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18/25 |
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180 or 250 cc |
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2. PILOT
MODEL CODE |
PILOT STYLE |
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02 |
MS Connector |
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04 |
Packard Connector |
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EDCs ordered separate from the pump must have mounting kits ordered separately:
30/55 cc PUMP KIT (KIT NUMBER KK11655)
Comprised of one K07652 gasket and six 90073140611 bolts
75/100/130 cc PUMP KIT (KIT NUMBER KK11675) Comprised of one K07653 gasket and six 90073140611 bolts
42 cc PUMP KIT (KIT NUMBER KK11642)
Comprised of one K07652 gasket, six 9007314-0611 bolts and one K09123 washer
180/250 cc PUMP KIT (KIT NUMBER KK11618) Comprised of one K07653 gasket, six 9007314-0611 bolts and one K09123 washer
© Danfoss, 2013-09 |
BLN-95-8995-4 |
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TECHNICAL DATA
ELECTRICAL
FULL STROKE CURRENT 85 ± 11.3 mA (single coil) 42 ± 5.6 mA (series coils)
85 ± 11.3 mA (parallel coils)
See Current vs. Swashplate Angle curve
NOMINAL INPUT IMPEDANCE
24.7 ohms, .093 henries, each coil
DEADBAND
32 ± 7 psi divided by the scale factor
HYDRAULIC
FILTRATION
The system hydraulics must have 10 micron or better filtration. The pump will contain screen filters near the interface to the EDC at the charge port and control port locations.Thepilotwillhavescreenfiltersatitsinputand output control ports.
FLUID
Automatic transmission fluid or hydraulic oil, such as Mobil DTE 24 or equivalent
OIL VISCOSITY 40-6000 SSU
OIL TEMPERATURE
-40° C (-40° F) minimum; 104° C (220° F) maximum
OPERATING SUPPLY PRESSURE
Typically 300-400 psi above case pressure
RATINGS
SCALE FACTOR
1.15 psi/mA (single coil)
2.3 psi/mA (coils in series)
1.15 psi/mA (coils in parallel)
TEMPERATURE
The valve will meet all specifications over the range of 21° to 82° C (70° to 180° F)
CURRENT VS. SWASHPLATE ANGLE
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15° |
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10° |
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5° |
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100 mA 80 |
60 |
40 |
20 |
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20 |
40 |
60 |
80 |
100 mA |
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5° |
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10° |
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15° |
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1390
Current Vs. Swashplate Angle of the Single Coil MCV111B.
ELECTRICAL CHARACTERISTICS
INPUT SHAFT ROTATION VS. TERMINAL CONNECTION VS. OUTPUT FLOW
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(+) Voltage to Terminal |
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One of Dual Coils |
Dual Coils in Parallel |
Dual Coils in Series |
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Input |
A |
B |
C |
D |
A |
B C |
D |
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B C |
D |
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Produces |
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Shaft |
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Flow Out |
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Rotation |
+ |
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+ |
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Of Port |
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Clockwise |
A or C |
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B or D |
A or C |
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B or D |
A |
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D |
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B |
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Counterclockwise |
A or C |
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B or D |
A or C |
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B or D |
A |
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D |
B |
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A |
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Start Current |
14 mA with 0.43 Vdc |
14 mA with 0.22 Vdc |
7 mA with 0.43 Vdc |
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Full Stroke Current |
85 mA with 2.3 Vdc |
85 mA with 1.15 Vdc |
42 mA with 2.3 Vdc |
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BLN-95-8995-4
2
DIMENSIONS, 75, 100, 130, 180, AND 250 cc PUMP EDC
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8,6 REF. |
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(0.34) |
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27,94 |
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7,11 |
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(1.10) |
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(0.28) |
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52,83 |
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NEUTRAL ADJUST |
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(2.08) |
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LOCK NUT |
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CONTROL |
MS CONNECTOR |
203,2 |
MANUAL OPERATOR |
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LINKAGE |
OPTION |
(8.00) |
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PACKARD |
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WEATHER-PACK |
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CONNECTOR |
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OPTION |
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122,99 |
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7,14 DIA 6 PLACES |
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(4.84) |
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(0.28 DIA) |
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89,41 |
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(3.52) |
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55,37 |
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(2.18) |
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31,62 |
36,07 |
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(1.42) |
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(1.25) |
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10,4 |
SAE |
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49,78 |
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12,2 |
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(0.41) |
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(1.96) |
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SAE |
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SERVO PORT |
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22,4 |
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108,46 |
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(0.48) |
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FITTING X1 |
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SERVO PORT |
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(0.88) |
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(4.27) |
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141,22 |
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FITTING X2 |
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(5.56) |
169,67 |
9,4 |
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186,06 |
(6.68) |
(0.37) |
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(7.33) |
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1788 |
Dimensions of the MCV111B EDC for 75, 100, 130, 180, and 250 cc Pumps in Millimeters (Inches).
DIMENSIONS, 42 cc AND 55 cc PUMP EDC
CONTROL LINKAGE
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8,6 REF. |
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(0.34) |
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27,94 |
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7,11 |
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(1.10) |
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(0.28) |
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52,83 |
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(2.08) |
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NEUTRAL ADJUST |
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LOCK NUT |
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MS CONNECTOR |
MANUAL OPERATOR |
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203,2 |
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OPTION |
(8.00) |
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PACKARD |
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WEATHER-PACK |
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CONNECTOR |
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OPTION |
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122,99 |
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7,14 DIA 6 PLACES |
(4.84) |
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(0.281 DIA) |
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89,41 |
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(3.52) |
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55,37 |
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31,62 |
36,07 |
(2.18) |
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(1.25) |
(1.42) |
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10,4 |
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49,78 |
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12,2 |
(0.41) |
SAE |
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(1.96) |
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22,4 |
SERVO PORT |
108,46 |
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(0.48) |
FITTING X1 |
(4.27) |
SERVO PORT |
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(0.88) |
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141,22 |
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FITTING X2 |
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(5.56) |
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9,4 |
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169,67 |
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(6.68) |
(0.37) |
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186,06 |
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(7.33)
1789
Dimensions of the MCV111B EDC for 42 cc and 55 cc Pumps in Millimeters (Inches).
BLN-95-8995-4
3
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