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Danfoss MCV109A, Manual, Page: 2 / 11

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2

SPARE PARTS

See the Spare Parts diagram for a list of spare parts available

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.

ORDERING INFORMATION 

(continued)

SPARE PARTS

1234567890

1234567890

1234567890

ITEM

PART

ITEM

PART

NUMBER

NUMBER

DESCRIPTION

NUMBER

NUMBER

DESCRIPTION

1

K03383

Mating Connector 2-Pin (Unassembled)

14

K07028

Plug

K03384

Mating Connector 4-Pin (Unassembled)

K07011

O-Ring For Item 14

2

K03377

Device Connector 2-Pin (Unassembled)

15

K07163

Spacer - Size 20

K03378

Device Connector 4-Pin (Unassembled)

16

K07164

Spacer - Size 26

3

K01314

Device MS Connector

17

K07128

(3) Port Screens

4

K08106

Mating MS Connector (90

°

)

18

K07136

(2) .052 Orifices

5

K07055

#10-32 X 5/8 Socket Head Cap Screw

19

K07006

(3) O-Ring For Ports

6

K01291

(2) Plugs

20

K07182

EDC Gasket

7

K07612

Filter Assembly

21

K07160

Linkage Bushing

8

K07034

(2) Screws, Null Adjust Cover

             K07009          O-Ring, Linkage Bushing (1 Each)

9

K08387

Seal Washer

22

K02611

Snap Ring

10

K10911

Seal Washer Retainer

23

K04448

Plug

11

K07000

#3/8-32 Nut Null Adjust

24

K07159

Plug

12

K08133

Gasket Null Adjust Cover

K07010

O-Ring For Item 15

13

K07158

   Null Adjust Cover

25

K07005

O-Ring Linkage Shaft

26

       

CAUTION 

        

Do Not Remove (4) Cover Screws

1238E

BLN-95-8985-1

Summary of Contents for MCV109A

Page 1: ... and second stages can be individually replaced Swashplate movement can be visually detected Single or dual coil torque motor ORDERING INFORMATION MCV109s are ordered for the particular motor on which they are to be mounted Link Installation Kits as ordered in the table below include orifices retaining ring drag link spacer plate swashplate pin link and ball assembly hex screws O rings and gaskets...

Page 2: ...K03377 Device Connector 2 Pin Unassembled 15 K07163 Spacer Size 20 K03378 Device Connector 4 Pin Unassembled 16 K07164 Spacer Size 26 3 K01314 Device MS Connector 17 K07128 3 Port Screens 4 K08106 Mating MS Connector 90 18 K07136 2 052 Orifices 5 K07055 10 32 X 5 8 Socket Head Cap Screw 19 K07006 3 O Ring For Ports 6 K01291 2 Plugs 20 K07182 EDC Gasket 7 K07612 Filter Assembly 21 K07160 Linkage Bu...

Page 3: ...90123 123456789012345678901234567890121234567890123 WARNING When using a pulse width modulated valve driver do not use a carrier frequency between 200 and 600 Hz If these frequencies cannot be avoided consult the fac tory Do not use a pulse current of more than 120 of that required for full output Failure to meet the above conditions can cause severe damage to the valve which will result in improp...

Page 4: ...44 A B A B C D A B C D A B C D Single coil 140 mA with 3 3 Vdc input at full destroke 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 Dual coils in series 72 mA with 4 4 Vdc input at full destroke Dual coils in parallel 185 mA with 1 4 Vdc input at full destroke V GROUND MCH CONTROL HANDLE MCV104 EDC PV MV MCV109 EDC A B A B SWASHPLATE ANGLE DEGREES OU...

Page 5: ... the flapper back towards null When the torque output from the motor equals the torque output from the pressure feedback the pilot system is in equilibrium It is this pressure feedback that makes the pilot a stand alone closed loop pressure control valve The second stage s null adjust is set with the modulating spring compressed to the equivalent of 95 psi which is the amount of differential press...

Page 6: ...y HUMIDITY After being placed in a controlled atmosphere of 95 humidity at 49 C 120 F for 10 days the EDC will perform within specification limits DIMENSIONS See Dimension drawing WIRING Twowiringstylesareavailable MSandPackardconnectors The MS connector is Part Number K01314 MS3102C14S 2P and has four pins only two of which are used A and B for single coil devices See Wiring Schemes diagram for p...

Page 7: ...rs See Distance Packard Connector diagram 6 Manually insert the assembled wires into the back end large hole of the plastic housing Push until the wire detents with an audible click then pull back slightly to ensure proper seating Observe the proper phasing of the wires when installing black wire to A hole red to B black to C and red to D Terminals may be removed from the connector bodies with a P...

Page 8: ...rau lic Displacement Control HDC must be retrofitted with the appropriate drag link press fit pin and retaining ring replac ing the slip fit headless pin and E rings used to attach the original drag link Series 20 and 26 models require a spacer plate between the control and the motor housing Series 3X motors with Serial Number of 82 34 00000 or greater will accept the EDC without modification of t...

Page 9: ...e the bushing over the shaft Torque to the body 10 15 foot pounds so that the feedback shaft extends through the bushing D Install the retaining ring in the groove on the shaft 2 Align one end of the replacement swashplate drag link with the holes in the swashplate link arms 3 Insert the press fit pin through the case drain port to trap thedraglinkintheswashplateclevis Itwillbenecessary to tap the...

Page 10: ...high and low command extremes 1 Disconnect the wires connecting the EDC pilot of the MCV109 EDC MV on the motor 2 Install a mechanical or photoelectric tachometer on the output shaft of the hydraulic motor 3 Run the EDC electrical or HDC PV hydraulic com mand source to maximum 4 Slowlyreducethecommandsourceuntilthemotorshaft starts to decrease speed as shown by the tachometer This point represents...

Page 11: ...n need of repair include a description of the problem a copy of the purchase order and your name address and telephone number RETURN TO Danfoss US Company Return Goods Department 3500 Annapolis Lane North Minneapolis Minnesota 55447 EUROPE ORDER FROM Danfoss Neumünster GmbH Co Customer Service Department Krokamp 35 Postfach 2460 D 24531 Neumünster Germany Telephone 49 4321 8710 Fax 49 4321 871 284...

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