Danfoss MCV115 Installation guide
MCV115
Hydraulic Displacement Control - PV
Series 90
BLN-95-9039-1 Issued: December 1992
DESCRIPTION
The MCV115 Series 90 Hydraulic Displacement Control (HDC)isahydromechanicalpumpstrokecontrolwhichuses mechanical feedback to establish closed loop control of the swashplate angle of Danfoss Series 90 pumps.
The first stage, provided by the customer, produces a differential pressure to the HDC. 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 |
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Fully tested to resist the off road environment |
deadband; offers safety combined with accurate and |
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responsive control |
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Minimum long term null shift |
ORDERING INFORMATION
The MCV115 HDC is ordered through the following part number scheme:
MCV115 |
X |
XX |
XX |
CONFIGURATION
PUMP CATEGORY (frame/linkage size)
PRESSURE RANGE
CONFIGURATION
AStandard control
BAnnular control (not available on 30, 42 or 55 cc pumps)
PUMP CATEGORY
05 |
30, 42, 55 cc |
07 |
75 cc |
10 |
100 cc |
13 |
130 cc (with short pin) |
18 |
180 cc |
PRESSURE RANGE
01 |
1.1 - 6.7 bar |
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02 |
1 |
- 11 bar |
03 |
3 |
- 11 bar |
04 |
8 |
- 16.5 bar |
05 |
0.8 - 4.6 bar |
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06 |
5 |
- 15 bar |
The pressure ranges available for the HDC are:
MCV115 |
PRESSURE |
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PART NUMBER |
RANGE |
COMMENTS |
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AXX01, BXX01 |
1.1 - 6.7 bar |
Same Pressure Range |
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(16 - 98 psi) |
as MCV112 |
AXX02, BXX02 |
1 - 11 bar |
Same Pressure Range |
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(15 - 160 psi) |
as MCV112 |
AXX03, BXX03 |
3 - 11 bar |
Same Pressure Range |
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(44 - 160 psi) |
as MCV112 |
AXX04, BXX04 |
8 - 16.5 bar |
Not available as |
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(116 - 239 psi) |
MCV112 |
AXX05, BXX05 |
0.8 - 4.6 bar |
Same Pressure Range |
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(11 - 66 psi) |
as MCV114's |
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lower range |
AXX06, BXX06 |
5 - 15 bar |
Not available as |
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(73 - 218 psi) |
MCV112 |
© Danfoss, 2013-09 |
BLN-95-9039-1 |
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ORDERING INFORMATION (continued)
HDCs ordered separate from the pump must have mounting kits ordered separately. The following table shows the pump/ kit relationships.
30/55 cc PUMP KIT (KIT NUMBER KK12655)
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PART NUMBER |
QUANTITY |
DESCRIPTION |
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K11419 |
1 |
Gasket |
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9007314-0611 |
6 |
Screw |
42 cc PUMP KIT (KIT NUMBER KK12642)
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PART NUMBER |
QUANTITY |
DESCRIPTION |
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K11419 |
1 |
Gasket |
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9007314-0611 |
6 |
Screw |
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K09123 |
1 |
Seal Washer |
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75/100/130 cc PUMP KIT (KIT NUMBER KK12675)
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PART NUMBER |
QUANTITY |
DESCRIPTION |
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K11420 |
1 |
Gasket |
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9007314-0611 |
6 |
Screw |
180 cc PUMP KIT (KIT NUMBER KK12618)
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PART NUMBER |
QUANTITY |
DESCRIPTION |
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K11419 |
1 |
Gasket |
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9007314-0611 |
6 |
Screw |
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K09123 |
1 |
Seal Washer |
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TECHNICAL DATA |
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Some specifications apply to all HDCs. Others will vary TIME RESPONSE (Maximum) |
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based on the MCV115 number scheme, as outlined in the |
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1.0 seconds (0 to full stroke) (pressure limited valves) |
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Ordering Information section. |
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2.0 seconds (full to full stroke) (pressure limited valves) |
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THRESHOLD |
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0.30 seconds (0 to full stroke) (non-pressure limited |
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valves) |
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See Pressure Range in the Ordering Information sec- |
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0.40 seconds (full to full stroke) (non-pressure limited |
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tion. Definedasthecenterofhysteresisextractedtothe |
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valves) |
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pump start stroke. |
SENSITIVITY |
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DEADBAND |
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Thevalvewillrespondtoa2%changeininputpressure |
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Twice the threshold, ±7% of the rated pressure. |
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throughout the rated pressure range except for the |
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RATED PRESSURE |
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deadband region. |
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See Pressure Range, in the Ordering Information sec- |
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INPUT PRESSURE VS. SWASHPLATE ANGLE |
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tion. Tolerance is±10%. Defined as the pressure |
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required to reach rated pump output. Maximum pres- |
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17° |
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sure is 500 psid above rated pump case pressure. See |
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the Input Pressure Vs. Swashplate Angle Curve. |
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<![if ! IE]> <![endif]>ANGLE |
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HYSTERESIS (Maximum) |
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made between 1 and 16 degrees of swash angle. |
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<![if ! IE]> <![endif]>SWASHPLATE |
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7%ofratedpressure.Measuredonthehysteresiscurve |
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generatedatafrequencyof0.01Hzwithanexcursionof |
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± rated pressure. The hysteresis measurement will be |
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SYMMETRY |
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Input current required to reach rated output in each |
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DELTABAR |
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direction must be equal within 15%. |
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10 |
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LINEARITY |
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10% maximum of swashplate angle change between |
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any two points except within 1° of neutral. |
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RETURN TO NEUTRAL |
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The spool will return to neutral if the input differential |
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pressure signal is zero and mechanical feedback is |
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present. |
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17° |
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1637 |
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OPERATING CHARGE PRESSURE |
Input Delta Pressure Vs. Swashplate Angle for the |
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300 psi above case pressure (nominal). |
MCV115 (Typical). |
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BLN-95-9039-1
2
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