Danfoss MCV102A Installation guide
MCV102A
Pressure Control Servovalve
BLN-95-8963-4 |
Issued: October 1998 |
DESCRIPTION
TheMCV102APressureControlServovalve(PCS)isatwostage,fourway,closedloopelectrohydraulicservovalvethat provides an output differential pressure in response to a low power electrical input signal. The PCS consists of a closed loopPressureControlPilotValveandaclosedlooppressure control boost stage valve. The boost stage valve features a unique double-spool arrangement that has significant cost and functional advantages over conventional single-spool deigns.
The PCS has been designed with an output dynamic response bandwidth sufficient for most high performance servocontrolapplications.Thevalvemaybeusedtodirectly control cylinders, to control output forces, or as a first stage
to pilot operated high flow main control valves of 40 gpm to 400 gpm flow rates.
FEATURES
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Nullshiftstabilityoverawidetemperatureandpressure |
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Compatible with standard 10 micron nominal filtration |
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range |
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Pilot stage manual operator allows hydraulic operation |
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Constant pressure gain regardless of supply pressure, |
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to be verified without electrical signal |
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return pressure and load flow demand changes |
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Configured for direct manifold mounting |
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•Independent dual spool operation maximizes load flow
output while maintaining proper differential pressure |
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GM Packard or MS Connector available |
ORDERING INFORMATION
SPECIFY
•MCV102A1006 (PCS with Packard Connector)
•MCV102A1014 (PCS with MS Connector)
• MCV102A2103 (PCS dual coil MS Connector) |
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SPARE PARTS |
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ITEM |
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NUMBER |
NUMBER DESCRIPTION |
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1K01314 Device MS Connector
2K08106 Mating MS Connector (Bag Assembly)
3K03377 Device Connector 2-Pin (Unassembled)
4K03383 Mating Connector 2-Pin (Unassembled)
5K00829 O-Ring (.364 ID x .070)
6K00834 O-Ring (1.24 ID x .070)
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K00830 O-Ring (.43 ID x .070) |
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8K04793 Socket head cap screw 10 - 32 X 3/4
9K00832 0-Ring (.551 ID x .070)
Mounting manifolds may be made available upon customer request.
1,2
3,4
5
6
1320A
Location of Spare Parts Item Number.
© Danfoss, 2013-09 |
BLN-95-8963-4 |
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TECHNICAL DATA |
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ELECTRICAL |
VIBRATION |
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Withstands a vibration test designed for mobile |
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RATED FULL PRESSURE CURRENT |
equipment controls consisting of two parts: |
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See Two Spool, Pressure Control, Static Gain (Single Coil). |
1. Cycling from 5 to 2000 Hz in each of the three axes. |
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± 150 mA (single coil ) (23 ohm) |
2. Resonance dwell for one million cycles for each |
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± 200 mA (dual coil) (19 and 15.5 ohm) |
resonance point in each of the three axes. |
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Maximum input signal is ± 250 mA, which will increase |
Subject to acceleration levels of 1 to 46 G's. |
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PCSoutputdifferentialpressurerangetoapproximately |
Acceleration level varies with frequency. |
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1.2 times that obtained at rated input signal at rated |
HUMIDITY |
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supply pressure. |
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After being placed in a controlled atmosphere of 95% |
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COIL RESISTANCE @ 24° C (76 ° F) |
humidity at 49° C (120° F) for 10 days, the PCS will |
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23 ohms (single coil) |
perform within specification limits. Meets MIL-STD- |
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19 ohms and 15.5 ohms (dual coil) |
810B. |
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COIL INDUCTANCE |
PERFORMANCE |
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.14 Henries (single coil) |
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LOAD FLOW CURVE |
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.062 Henries (19 ohms, dual coil), |
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.047 Henries (15.5 ohms, dual coil) |
See Two Spool, Pressure Control, Load-Flow Curve |
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MAXIMUM CONTINUOUS VOLTAGE |
(Single Coil). |
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SUPPLY PRESSURE |
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7.5 Vdc at 93.3° C (200 ° F) |
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1000 psi maximum |
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HYDRAULIC |
500 psi rated |
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150 psi minimum |
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FLUID
Petroleumbasedstandard.Otherwithcompatibleseals RETURN PRESSURE Atmospheric to 300 psi
OIL VISCOSITY
40 - 20,000 SSU SUPPLY FILTRATION
10 micron nominal recommended
FLUID AND AIR OPERATING TEMPERATURE RANGE |
RATEDOUTPUTDIFFERENTIALPRESSUREAT500PSI |
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-40° to 104 ° C (-40 ° to 220 ° F) |
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SUPPLY PRESSURE |
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FLUID AND AIR RATED TEMPERATURE RANGE |
± 225 psid (23 ohms, single coil) |
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-29° to 104 ° C (-20 ° to 220 ° F) |
± 156 psid (19 and 15.5 ohms, dual coil) |
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ENVIRONMENTAL |
With output ports blocked |
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RATED OUTPUT FLOW RATE |
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SHOCK |
6.6 gpm minimum (single coil) |
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50 G's for 11 milliseconds. Three shocks in |
both With an output load pressure of 175 psid |
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directionsofthethreemutuallyperpendicularaxesfora |
.7 gpm minimum (dual coil) |
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total of 18 shocks. |
With an output load pressure of 100 psid |
TWO SPOOL, PRESSURE CONTROL, STATIC GAIN (SINGLE COIL)
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OUTPUT |
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DIFFERENTIAL |
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PRESSURE (psid) |
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200 |
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100 |
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50 |
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150 |
200 |
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CURRENT INPUT (mA) |
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100 |
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200 |
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300 |
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1253A |
BLN-95-8963-4 |
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TECHNICAL DATA (continued)
NEUTRAL LEAKAGE 1.2 gpm maximum
Consisting of pilot stage valve quiescent flow plus boost stage neutral leakage
OUTPUT PORT NULL PRESSURE 0 psid
With supply pressure at 500 psi above return pressure, each output port pressure will be 115 psi nominal
THRESHOLD
Less than 1% of rated input signal
HYSTERESIS
5% of rated input signal, maximum
LINEARITY
Within 5% of rated signal, maximum
Pressure linearity is the deviation from the best straight linepressuregaincurveineitherdirectionexpressedas a percentage of rated input signal. Null region± 4%(
signal) pressure gain may vary from 50 to 200% of nominal pressure gain due to boost stage null adjustment. Pressure linearity in each direction is specified from 4% to 90% input signal with a constant pressure drop across the valve.
SYMMETRY
Will not exceed 5% in each direction
Symmetry is the difference in output differential pressure in each direction at rated input signal expressed as a percentage of the mean output differential pressure.
TWO SPOOL, PRESSURE CONTROL, LOAD-FLOW CURVE (SINGLE COIL)
LOW PRESURE VERSION |
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Pressure control servovalve |
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LOAD-FLOW (P-Q) CURVE - PCS |
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Supply pressure: |
500 psi |
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10 |
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FLOW (gpm) |
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8 |
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6 |
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4 |
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2 |
mA |
mA |
mA |
mA |
mA |
mA mA mAmA mA |
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25 |
50 |
75 |
100 |
125 |
150 175200225250 |
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250 |
200 |
150 |
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100 |
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50 |
100 |
150 |
200 |
250 |
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mA mAmAmA mA |
mA |
mA |
mA |
mA |
mA |
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175 |
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75 |
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25 |
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200 |
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150 |
125 |
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250225 |
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6 |
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8 |
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10 |
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1254A
TECHNICAL DATA (continued)
PRESSURE NULL SHIFT |
by a current driver-type amplifier. The oil trapped |
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< ± 1.5% |
(23 ohms, single coil) |
between the two output ports does not exceed .4 cubic |
< ± 1.0% |
(19 and 15.5 ohms, dual coil) |
inches. See Two Spool, Pressure Control, Dynamic |
TEMPERATURE NULL SHIFT |
Response. |
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< ± 3 psid (23 ohms, single coil) |
DIMENSIONS |
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< ± 2 psid (19 and 15.5 ohms, dual coil) |
See Dimensions |
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FREQUENCY RESPONSE 85 Hz minimum at -3db
70 Hz minimum at 90° phase lag
Specified at 500 psi supply pressure above return pressure, blocked output ports and an input signal of
± 30% to ± 50% of rated input signal. The PCS is driven
BLN-95-8963-4
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