Danfoss MCV115 Installation guide
DESCRIPTION
The MCV115 Series 90 Hydraulic Displacement Control
(HDC) is a hydromechanical pump stroke control which uses
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
MCV115
Hydraulic Displacement Control - PV
Series 90
BLN-95-9039-1 Issued: December 1992
• Servo control deadband independent of signal null
deadband; offers safety combined with accurate and
responsive control
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
A Standard control
B Annular 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
• Fully tested to resist the off road environment
• Minimum long term null shift
PRESSURE RANGE
01 1.1 - 6.7 bar
02 1 - 11 bar
03 3 - 11 bar
04 8 - 16.5 bar
05 0.8 - 4.6 bar
06 5 - 15 bar
The pressure ranges available for the HDC are:
MCV115 PRESSURE
PART NUMBER RANGE COMMENTS
AXX01, BXX01 1.1 - 6.7 bar Same Pressure Range
(16 - 98 psi) as MCV112
AXX02, BXX02 1 - 11 bar Same Pressure Range
(15 - 160 psi) as MCV112
AXX03, BXX03 3 - 11 bar Same Pressure Range
(44 - 160 psi) as MCV112
AXX04, BXX04 8 - 16.5 bar Not available as
(116 - 239 psi) MCV112
AXX05, BXX05 0.8 - 4.6 bar Same Pressure Range
(11 - 66 psi) as MCV114's
lower range
AXX06, BXX06 5 - 15 bar Not available as
(73 - 218 psi) MCV112
© Danfoss, 2013-09 BLN-95-9039-1 1
.
.
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)
PART NUMBER QUANTITY DESCRIPTION
K11419 1 Gasket
9007314-0611 6 Screw
42 cc PUMP KIT (KIT NUMBER KK12642)
PART NUMBER QUANTITY DESCRIPTION
K11419 1 Gasket
9007314-0611 6 Screw
K09123 1 Seal Washer
TECHNICAL DATA
Some specifications apply to all HDCs. Others will vary
based on the MCV115 number scheme, as outlined in the
Ordering Information section.
THRESHOLD
See Pressure Range in the Ordering Information section. Defined as the center of hysteresis extracted to the
pump start stroke.
DEADBAND
Twice the threshold, ±7% of the rated pressure.
RATED PRESSURE
See Pressure Range, in the Ordering Information sec-
tion. Tolerance is ±10%. Defined as the pressure
required to reach rated pump output. Maximum pressure is 500 psid above rated pump case pressure. See
the Input Pressure Vs. Swashplate Angle Curve.
75/100/130 cc PUMP KIT (KIT NUMBER KK12675)
PART NUMBER QUANTITY DESCRIPTION
K11420 1 Gasket
9007314-0611 6 Screw
180 cc PUMP KIT (KIT NUMBER KK12618)
PART NUMBER QUANTITY DESCRIPTION
K11419 1 Gasket
9007314-0611 6 Screw
K09123 1 Seal Washer
TIME RESPONSE (Maximum)
1.0 seconds (0 to full stroke) (pressure limited valves)
2.0 seconds (full to full stroke) (pressure limited valves)
0.30 seconds (0 to full stroke) (non-pressure limited
valves)
0.40 seconds (full to full stroke) (non-pressure limited
valves)
SENSITIVITY
The valve will respond to a 2% change in input pressure
throughout the rated pressure range except for the
deadband region.
INPUT PRESSURE VS. SWASHPLATE ANGLE
17°
HYSTERESIS (Maximum)
7% of rated pressure. Measured on the hysteresis curve
generated at a frequency of 0.01 Hz with an excursion of
± rated pressure. The hysteresis measurement will be
made between 1 and 16 degrees of swash angle.
SYMMETRY
Input current required to reach rated output in each
direction must be equal within 15%.
LINEARITY
10% maximum of swashplate angle change between
any two points except within 1° of neutral.
RETURN TO NEUTRAL
The spool will return to neutral if the input differential
pressure signal is zero and mechanical feedback is
present.
OPERATING CHARGE PRESSURE
300 psi above case pressure (nominal).
BLN-95-9039-1
SWASHPLATE ANGLE
10
DELTA BAR
10
17°
Input Delta Pressure Vs. Swashplate Angle for the
MCV115 (Typical).
2
1637
Loading...