Danfoss MCV111B Series Manual

DESCRIPTION
The MCV111B Electrical Displacement Control (EDC) is a
two-stage electrohydraulic pump stroke control which uses
mechanical feedback to establish closed loop control of the
swashplate angle of Danfoss Series 90 Pumps.
The first stage, the MCV110 Pressure Control Pilot (PCP) is
a torque-motor actuated, double-nozzle flapper valve that
produces a differential output pressure proportional to the
applied electrical signal. 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 null
deadband: offers safety combined with accurate and
responsive control
• Resistance to the environment: standard silicone oil
filled torque motor, environmentally sealed first/second
stage interface, full environmental testing
ORDERING INFORMATION
The MCV111B Electrical Displacement Control is ordered by
specifying the pump size and pilot type as shown in Table A.
Consult Danfoss, Minneapolis, MN, with further
questions.
TABLE A. INFORMATION NECESSARY TO SPECIFY
THE EDC.
MCV111B
BASE
DEVICE
PUMP
SIZE
PILOT STYLE
1. PUMP SIZE
MODEL CODE
03
05
07
10
13
14
18/25
© Danfoss, 2013-09
XX XX
PUMP SIZE
30 cc
42 or 55 cc
75 cc
100 cc
130 cc Pump S/N < 92 - 19
130 cc Pump S/N ≥ 92 -19
180 or 250 cc
MCV111B
Electrical Displacement Control-PV
Series 90
BLN-95-8995-4
• Minimum long term null shift
• Dual coil torque motor can be used to sum two command
sources
2. PILOT
MODEL CODE
02
04
EDCs ordered separate from the pump must have mounting
kits ordered separately:
30/55 cc PUMP KIT (KIT NUMBER KK11655)
Comprised of one K07652 gasket and six 9007314-
0611 bolts
75/100/130 cc PUMP KIT (KIT NUMBER KK11675)
Comprised of one K07653 gasket and six 9007314-
0611 bolts
42 cc PUMP KIT (KIT NUMBER KK11642)
Comprised of one K07652 gasket, six 9007314-0611
bolts and one K09123 washer
180/250 cc PUMP KIT (KIT NUMBER KK11618)
Comprised of one K07653 gasket, six 9007314-0611
bolts and one K09123 washer
.
BLN-95-8995-4
Issued: September 1996
PILOT STYLE
MS Connector
Packard Connector
.
1