Danfoss MCV109A Installation guide
MCV109A
Electrical Displacement Control-MV
BLN-95-8985-1 |
Issued: June 1995 |
DESCRIPTION
TheMCV109AElectricalDisplacementControl(EDC-MV)is atwo-stageelectrohydraulicmotorstrokecontrolwhichuses mechanical feedback to establish closed loop control of the swashplateangleof DanfossSeries2XandSeries
3X motors.
The first stage, the MCV116 Pressure Control Pilot, is a torque motor actuated, double nozzle flapper valve that produces a differential output pressure proportional to the appliedelectricalsignal.Thesecondstageusesthedifferen-
tial pressure to drive its double spool arrangement and port oil to the motor servo cylinders.
FEATURES
•Single command source can be used to control both • hydrostatic pump and motor
Pilot supply screens in series, upstream screen is externally serviceable
• Servo control deadband independent of signal null • First and second stages can be individually replaced deadband: offers safety combined with accurate and
responsive control.
• Resistancetotheenvironment:standardsiliconeoilfilled torque motor, environmentally sealed first/second stage interface, full environmental testing.
ORDERING INFORMATION
MCV109s are ordered for the particular motor on which they are to be mounted. Link Installation Kits, as ordered in the tablebelow,include:orifices,retainingring,draglink,spacer plate,swashplatepin,linkandballassembly,hexscrews,O-
rings and gaskets. In some cases not all the above are necessaryforinstallationandtheyarenotincludedinthekit.
TABLE A. INFORMATION NECESSARY TO SPECIFY THE LINK INSTALLATION KIT.
PILOT STYLE |
DESCRIPTION |
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22 |
Single Coil, Packard Connector |
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23 |
Dual Coil, Packard Connector |
26 |
Single Coil, MS Connector |
27 |
Dual Coil, MS Connector |
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KK041 XX
MOTOR SERIES
Order the valve itself through the following table:
TABLE B. INFORMATION NECESSARY TO SPECIFY THE ELECTRICAL DISPLACMENT CONTROL.
MCV109A59 XX
PILOT STYLE
The standard EDC Pilot is a single coil (one input to the torquemotor)(seeBlockDiagram),siliconeoilfilled,Packard Connector device. The options are a dual coil, which allows two command sources to be combined at the torque motor, the resulting signal being the difference between the two, a MS3102C14S-2P(DanfossPartNumberK01314)
connector.
© Danfoss, 2013-09 |
BLN-95-8985-1 |
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ORDERING INFORMATION (continued)
SPARE PARTS
SeetheSparePartsdiagramforalistofsparepartsavailable for the MCV109A. Other non-standard spare parts, such as orifices, may be available upon request.
Order Danfoss Pressure Override Valve through 'DQIRVV 'LVWULEXWRUV
.
Order the EDC either factory installed on motors or as an individual control.
SPARE PARTS
1238E
ITEM |
PART |
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ITEM |
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PART |
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NUMBER |
NUMBER |
DESCRIPTION |
NUMBER |
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NUMBER |
DESCRIPTION |
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1 |
K03383 |
Mating Connector 2-Pin (Unassembled) |
14 |
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K07028 |
Plug |
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K03384 |
Mating Connector 4-Pin (Unassembled) |
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K07011 |
O-Ring For Item 14 |
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2 |
K03377 |
Device Connector 2-Pin (Unassembled) |
15 |
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K07163 |
Spacer - Size 20 |
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K03378 |
Device Connector 4-Pin (Unassembled) |
16 |
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K07164 |
Spacer - Size 26 |
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3 |
K01314 |
Device MS Connector |
17 |
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K07128 |
(3) Port Screens |
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4 |
K08106 |
Mating MS Connector (90°) |
18 |
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K07136 |
(2) .052 Orifices |
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5 |
K07055 |
#10-32 X 5/8 Socket Head Cap Screw |
19 |
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K07006 |
(3) O-Ring For Ports |
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6 |
K01291 |
(2) Plugs |
20 |
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K07182 |
EDC Gasket |
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7 |
K07612 |
Filter Assembly |
21 |
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K07160 |
Linkage Bushing |
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8 |
K07034 |
(2) Screws, Null Adjust Cover |
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K07009 |
O-Ring, Linkage Bushing (1 Each) |
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9 |
K08387 |
Seal Washer |
22 |
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K02611 |
Snap Ring |
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10 |
K10911 |
Seal Washer Retainer |
23 |
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K04448 |
Plug |
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11 |
K07000 |
#3/8-32 Nut Null Adjust |
24 |
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K07159 |
Plug |
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12 |
K08133 |
Gasket Null Adjust Cover |
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K07010 |
O-Ring For Item 15 |
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13 |
K07158 |
Null Adjust Cover |
25 |
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K07005 |
O-Ring Linkage Shaft |
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1234567890 |
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26 |
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1234567890 |
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Do Not Remove (4) Cover Screws |
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1234567890CAUTION |
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BLN-95-8985-1
2
TECHNICAL DATA
ELECTRICAL
THRESHOLD/RATED OUTPUT CURRENT
The current required to come off stroke (threshold) and
to reach full 6° destroke (rated output) will be per the following table.
FINAL TWO DIGITS |
THRESHOLD |
RATED OUTPUT |
OF EDC PART # |
SETTING |
CURRENT |
22 or 26 |
85 mA |
140 mA (±10%) |
23 or 27 |
125 mA |
185 mA (±10%) |
SeePerformanceCurveandWiringSchemesdiagrams.
Thedeviceiscapableofoperatingcontinuouslyat125% of rated current at 104° C (220° F) oil temperatures.
COIL IMPEDANCE
23 ohms (single coil)
19 ohms (A, B terminals) and
15.5 ohms (C, D terminals) (dual coil)
HYSTERESIS
4 mA (.85 degrees swashplate angle) maximum at .01 Hz
LINEARITY
10% maximum of swashplate change between any two points
PHASING
A positive voltage applied to Terminal B (Red lead) will cause a pressure rise at the C2 port
SENSITIVITY
The valve shall respond to a 2% change in input current throughout the rated current range
23456789012345678901234567890121234567890123
2345678901234567890123456789012123456789012323456789012345678901234567890121234567890123WARNING
23456789012345678901234567890121234567890123
23456789012345678901234567890121234567890123
Whenusingapulsewidthmodulatedvalvedriver,donot
use a carrier frequency between 200 and 600 Hz. If these frequencies cannot be avoided, consult the factory. Do not use a pulse current of more than 120% of that required for full output. Failure to meet the above conditionscancauseseveredamagetothevalvewhich
will result in improper system operation.
HYDRAULIC
FLUID
Automatic transmission fluid or hydraulic oil, such as Mobil DTE 24 or equivalent
FILTRATION
The system hydraulics shall have 10 micron or better filtration
CASE PROOF PRESSURE 500 psi at 121° C (250° F)
CASE PRESSURE WITH NO EXTERNAL LEAKAGE 200 psi, minimum
RATED CASE OPERATING PRESSURE 40 psi
RATED FLOW
1.15minimumto1.45maximumgpm(standarddevice)
1.50 minimum gpm (high response)
with cylinder ports connected and 200 psi supply pressure
HYSTERESIS
4 mA maximum at .01 Hz
OPERATING SUPPLY PRESSURE 215 psi above case pressure
MAXIMUM NULL LEAKAGE
.65 gpm (standard)
1.25 gpm (high response)
at 200 psi across the valve with oil of 145-160 SUS at 38° C (100° F)
CONNECTION DIAGRAM
D 
A
C 
B
1276
Pin Orientation of the Optional MS Connector, Part Number (K01314) MS3102C14S-2P.
BLN-95-8985-1
3
WIRING DIAGRAM (Typical)
MCH CONTROL HANDLE
|
A |
B |
|
MCV104 |
MCV109 |
|
EDC |
EDC |
-V |
PV |
MV |
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B |
A |
GROUND
1444
PERFORMANCE CURVE
|
18 |
| <![if ! IE]> <![endif]>ANGLE (DEGREES) |
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| <![if ! IE]> <![endif]>SWASHPLATE |
6 |
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100 |
200 |
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OUTPUT CURRENT (mA) |
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03, 04, 07, 08 |
11 |
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01, 02, 05, 06 |
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1446A
Current vs. Swashplate Angle for the MCV109. Legend References the Last Two Digits of the Part Number.
WIRING SCHEMES
+A
B
Single coil 140 mA with 3.3 Vdc input at full destroke.
+A
B
C
+A
B
+C
D
Using one of the two dual coils, 185 mA with 2.8 Vdc (C, D) or
3.6 Vdc (A, B) input at full destroke.
+A
B
C
|
D |
|
D |
|
Dual coils in series, |
Dual coils in parallel, |
|||
72 mA with 4.4 Vdc |
185 mA with 1.4 Vdc |
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input at full destroke. |
input at full destroke. |
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1447
Wiring Schemes Using Four Different Pilot Valve Configurations for the EDC. Input Voltages Specified at 24° C.
BLN-95-8985-1
4
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