This family of motor mount HICs (Hydraulic Integrated Circuits) complements Danfoss
Power Solutions orbital motors—also know as Low Speed, High Torque (LSHT) motors.
These HICs perform several complementary functions common in LSHT motor
applications.
Motor mount HIC family
There are four basic types of HIC functions, or schemes, with additional functions
available:
· Counterbalance (or overcenter)
- Dual or single valve on A or B port
- With or without brake shuttle
ADVANTAGES
· Cross-port relief
- Dual or single valve on A or B port
- With or without brake shuttle
· Bypass solenoid
- With drain port
· Dual shock valve with anti-cavitation checks
- Uses PVLP (shock valve from PVG line)
- Dual only
- Ductile iron manifold only
There are advantages to using Danfoss ICS motor mount HICs:
· Pre-packaged designs, specically for Danfoss motors
- Pre-work is done to ensure proper assembly and mounting to motor
· System plumbing and packaging eciencies
- Reduction in ttings, tubing, and/or hoses
- Reduction in assembly time
· HICs have been pre-tested to NFPA test standards
· O-the-shelf solution of common valve functions applied with orbital motors
BC332376129115en-000101 • February 2020
MM - 6
Motor Mount HIC Technical Information
BB
MM-DH-00-DCB10-HV-1-C-1-E-100-B-10S
Application Notes
ORBITAL MOTORS
There are seven specic Danfoss Power Solutions orbital motor types in this program. The table
below highlights the motors and their basic technical information. For more information refer
to the technical information manual number in the table. HICs t only the porting conguration
shown.
Motor Mount HIC
Motor typeMM-DH MM-DS MM-OMP/OMR MM-OMHMM-OMS MM-OMT
DH (Legacy)
BSP Porting
DS (Legacy)
BSP Porting
OMP (Legacy)
BSP Porting
OMR (Legacy)
BSP Porting
OMPX (SA-C1)
Aligned Manifold Porting
OMPX (SO-A3)
Oset BSP Porting
OMRX (SA-C1)
Aligned Manifold Porting
Orbital Motor
OMRX (SO-A3)
Oset BSP Porting
OMH
BSP Porting
OMS
BSP Porting
OMT
BSP Porting
X
X
X
X
X
X
X
X
X
X
X
Motor rotation
For the motor mount HIC program, the port designations are illustrated here. With
the shaft facing you, A is the port on the right, while B is the port on the left.
Order code
The order code is easy to understand. Each code starts with MM for Motor Mount.
The second eld represents motor type (OMPX, OMRX, OMH, OMS, or OMT). The third
eld represents secondary valve (00 for none, LS for shuttle). The fourth eld gives the
primary valve position (D for dual, A port, or B port) followed by the cartridge used
(CB10-HV, CP441-1, VME-06, CP211-1, SVP10-NCR, CP502-3 or PVLP). The remainder of
the code details options specic to that cartridge, including port style on the HIC. See
each individual valve in this section for a detailed breakdown of the available options.
- Contact your Danfoss Power Solutions representative to order motors.
- Refer to the motor technical information manual for detailed motor information.
· Mounting bolts and O-rings are included with the purchase of the HIC.
- The service mount kit allows ordering of just bolts and O-rings.
- All O-rings are viton.
· All HICs in this program are aluminum, except the dual shock valve HIC.
- Dual shock valve housing is ductile iron.
- For ductile iron on any other HIC, please contact your Danfoss ICS representative.
· OMPX/OMRX and OMH use the same mount, but OMH has higher ow capability.
- The OMH uses dierent cartridges to accommodate the higher ow.
· OMPX (C1) and OMRX (C1) use the same mount, but OMRX (C1) requires an
additional subplate to clear the motor housing.
- This subplate is included with the purchase of the HIC.
- The subplate is also included in the service mount kit for OMRX (C1) HICs.
· Motor mount HICs using dual valves have both valves set identically at the factory.
Test block schematic· Testing
- A test block is available for HIC
testing and adjustment of pressure
MOUNT
OMP/OMR/OMH (LEGACY)DH/DS (LEGACY)
)
OMPX/OMRX (SO-A3)
MOUNT
OMS
MOUNT
OMT
MOUNT
settings.
- The test block order number is
11025000.
- For further details, refer to the
Accessoriessection of this catalog.
BC332376129115en-000101 • February 2020
A1 B1A2 B2A3
B3
A4 B4
MM - 8
Motor Mount HIC Technical Information
With ShuttleWithout Shuttle
Application Notes
COUNTERBALANCE
VALVES
Counterbalance valves prevent motors
from drifting excessively due to control
Dual counterbalance valve
MA
MB
MA
MB
valve leakage. They can hold the load in
the event of hose/tube failure, or limit
overrun when a load is in a lowering or
runaway mode (vehicle going downhill).
They provide a smooth, cushioned stop
when the control valve is suddenly
closed.
S
A
B
P104 787
A
B
Counterbalance valves have a pilot ratio of 3.0:1, 4.5:1, or 10.0:1. Typical pilot ratio for
motor applications is 10.0:1
An optional shuttle valve is available for functions such as load sensing feedback,
operating an unloading valve, or releasing a brake. The shuttle connects the highest
pressure port (A or B) to the S port.
Congurations are available with dual counterbalance valves, or single valve on A or B
port. Typical counterbalance applications include swing drives, winch drives, and vehicle
propulsion. For more information about counterbalance valves, see Counterbalance
valves catalog.
Dual counterbalance valve
BC332376129115en-000101 • February 2020
MM - 9
Motor Mount HIC Technical Information
Application Notes
COUNTERBALANCE
VALVES (continued)
Sample system circuits
Motor with dual counterbalance valve
A typical rotary circuit application for a counterbalance valve contains a pump,
directional control valve, system relief valve, and motor. Without a counterbalance valve
there is no back pressure to hold the load on the motor, or to prevent free rotation when
the control valve shifts to the neutral position. Additionally nothing prevents motor
rotation in the event of hydraulic line failure.
A counterbalance valve controls motion.
It also provides protection against hose
Dual counterbalance valve
or tube failure. In this circuit, a dual
counterbalance HIC is mounted to a
standard motor, providing functionality in
both directions.
Moving the directional control valve to
MBMA
the left causes the motor to rotate in one
direction. The motor rotates the load
with free ow going through the check
valve portion of the counterbalance
valve, while piloting open the opposite
counterbalance valve to allow ow to
discharge from the motor.
When the directional control valve is
centered, the counterbalance valve
prevents leakage and locks the load in
A
B
position. Moving the directional control
valve to the right sends ow to rotate the
motor in the opposite direction.
If the load causes the motor to overrun
the pump, pilot pressure to the
downstream counterbalance valve
decreases and the valve modulates to
match the motor speed to the pump ow.
BC332376129115en-000101 • February 2020
Typical application of dual counterbalance valve
in a motor circuit.
MM - 10
Motor Mount HIC Technical Information
Application Notes
COUNTERBALANCE
VALVES (continued)
Motor with dual counterbalance valve and shuttle operating a brake and unloading valve
Adding a load sense, or brake shuttle valve allows further functionality. In this circuit,
an integral brake and an unloading valve (logic element), are added. The shuttle valve
senses the higher pressure work port and provides pressure to release the brake when
the system pressure exceeds the minimum brake release pressure.
When the directional control valve
Dual counterbalance with shuttle
shifts in either direction, pressure builds
in the circuit to release the brake and
allows the motor to rotate. As shown in
the diagram, an orice provides a slight
delay in timing the brake release. When
the directional control valve is centered,
the brake re-engages. Additionally, the
LS pressure signal pilots an unloading
valve.
MBMA
When the directional control valve is
centered, pressure builds at the outlet of
the gear pump and opens the unloading
valve, allowing the pump ow to bypass
the circuit and exhaust into the reservoir.
When the directional control valve
shifts in either direction, the unloading
valve is piloted to stay in the closed
position, thus allowing pump ow to
AS
B
enter the working circuit. Similarly, this
LS pressure could communicate ow
demand to a load sensing open circuit
piston pump.
BC332376129115en-000101 • February 2020
Motor with integral brake, system includes
pump unloading valve.
MM - 11
Motor Mount HIC Technical Information
With ShuttleWithout Shuttle
Application Notes
CROSSPORT RELIEF
VALVES
The cross-port relief valve controls
maximum torque of the motor. It
Dual cross-port relief with shuttle
MA
MB
MA
MB
provides overpressure protection for the
work ports. The cross port relief valve is
a full-ow relief. It can bypass all motor
ow when pressure reaches the relief
setting.
The cross-port relief valve is available
A
B
A
B
S
in congurations with dual (cross-port)
valves or with relief on A or B port only. An optional shuttle valve is also available for
load-sensing pumps or auxiliary functions such as brake release.
Typical applications for cross-port relief valves include vehicle propulsion, auger drives,
conveyer drives, and slew drive. Any rotary application requiring pressure limiting can
benet from a motor-mounted cross-port relief valve. For more information on relief
valves, see Relief Valves catalog.
Cross-port relief valve
BC332376129115en-000101 • February 2020
MM - 12
Motor Mount HIC Technical Information
Application Notes
CROSSPORT RELIEF
VALVES (continued)
Sample system circuits
Motor with dual cross-port relief
A typical rotary circuit application for a cross-port relief valve contains a pump,
directional control valve, system relief valve, and motor. Without a cross-port relief valve
there is no overpressure protection at motor work ports. A cross-port relief valve controls
motor torque while reducing system component fatigue.
In this circuit, a dual cross-port relief
HIC is mounted to a standard motor,
Dual cross-port relief
providing functionality in both
directions. Moving the directional
control valve to the left causes the motor
to rotate in one direction. When the
load exceeds the valve setting, the valve
MBMA
opens allowing the ow to bypass to the
opposite work port. The cross-port relief
valve remains open until the load on
the motor decreases below the pressure
setting.
The system relief valve shown in this
circuit provides the primary pressure
protection. The directional control valve
can isolate the pump and motor while
shifting, making independent pressure
protection necessary. A motor-mounted
A
B
cross-port relief is typically used in
circuits where limiting the torque from
the load is critical, where the load is very
dynamic, or where distance from the
system relief limits responsiveness.
BC332376129115en-000101 • February 2020
Simple rotary circuit with dual cross-port
relief valve.
MM - 13
Motor Mount HIC Technical Information
Application Notes
CROSSPORT RELIEF
VALVES (continued)
Motor with dual cross-port relief, and shuttle operating a brake and unloading valve
Adding a load sense, or brake shuttle valve allows further functionality. In this circuit,
an integral brake and an unloading valve (logic element), are added. The shuttle valve
senses the higher pressure work port and provides pressure to release the brake when
the system pressure exceeds the minimum brake release pressure.
When the directional control valve
Dual cross-port relief with shuttle
shifts in either direction, pressure builds
in the circuit to release the brake and
allows the motor to rotate. As shown in
the diagram, an orice provides a slight
delay in timing the brake release. When
the directional control valve is centered,
the brake re-engages. Additionally, the
LS pressure signal pilots an unloading
valve.
MBMA
When the directional control valve is
centered, pressure builds at the outlet of
the gear pump and opens the unloading
valve, allowing the pump ow to bypass
the circuit and exhaust into the reservoir.
When the directional control valve
shifts in either direction, the unloading
valve is piloted to stay in the closed
position, thus allowing pump ow to
AS
B
enter the working circuit. Similarly, this
LS pressure could communicate ow
demand to a load sensing open circuit
piston pump.
BC332376129115en-000101 • February 2020
Motor with integral brake, system includes
pump unloading valve.
MM - 14
Motor Mount HIC Technical Information
MB
MA
B
A
D
Application Notes
BYPASS SOLENOID
VALVES
The bypass solenoid allows an electric
Bypass solenoid
signal to enable/disable motor rotation
independent of system hydraulics. The
normally closed solenoid valve bypasses
ow from B to A when energized. This
12
function is unidirectional. Contact your
Danfoss ICS representative if you require
reverse logic or if youw ant to use a ow
control valve instead of a solenoid.
The manifold includes a drain port connected to port A to simplify circuit plumbing.
Depending on motor drain pressure capabilities, you may connect the motor drain
directly to port D on the HIC instead of routing it back to the reservoir.
Typical uses for this valve include applications requiring individual motors on the same
circuit to be turned o independently, disabling motor during system start-up to limit
pressure losses, and on/o fan drive applications. For further information on solenoid
valves, see Solenoid Valves catalog.
Bypass solenoid valve with robust coil
BC332376129115en-000101 • February 2020
MM - 15
Motor Mount HIC Technical Information
Application Notes
BYPASS SOLENOID
VALVES (continued)
Sample system circuits
Motor with drain, no directional valve
A typical rotary circuit application for a bypass solenoid valve contains a pump, system
relief valve, motor, and in most cases, a directional control valve. The bypass solenoid
valve allows an electrically-actuated method of bypassing ow at the motor.
A bypass solenoid valve, when energized, stops the motor rotating by bypassing ow
around the motor. In this circuit, a bypass solenoid HIC is mounted to a motor with a
drain port, providing functionality in only one direction of motor rotation. The pump
provides ow directly to one port of the HIC.
Flow normally goes through the motor
Bypass solenoid with drain port
and exits the opposite port to the
reservoir. When the bypass solenoid
valve is energized, the ow bypasses
the motor. This causes the motor to
stop rotating even though the pump
continues to provide ow.
Because this circuit only ows in one
MBMA
direction, and the HIC drain port
connects to the discharge port, the
motor drain port can connect directly to
the HIC. This simplies system plumbing.
You can eliminate the motor drain line to
the reservoir. If the motor does not have
a case drain, cap the HIC drain port.
The system relief provides pressure
protection in this circuit. A circuit similar
to this is typically used in systems where
the motor only needs to rotate in one
direction, a directional control valve
is not required, and the application
requires the motor to disengage while
the pump ow continues.
AD
This circuit has no directional valve. The solenoid
bypass valve controls motor rotation (on/o).
B
BC332376129115en-000101 • February 2020
MM - 16
Motor Mount HIC Technical Information
Application Notes
BYPASS SOLENOID
VALVES (continued)
Motors in series
Another potential application of the solenoid bypass valve is one with two or more
motors in series. This circuit contains a pump, directional control valve, system relief
valve, and a series of motors with drain ports. The motors rotate in one direction, so the
system uses a two-position directional valve.
When the directional control valve shifts to the left, ow enters and exits the motor on
the right, then through the motor in the middle, through the left motor, then back to the
directional control valve and discharges to the reservoir. The function of the solenoid
bypass valve in this circuit is to engage and disengage motors that use the same ow
source. Any of the three motors can be bypassed individually while maintaining the
series ow through the circuit.
Because the drain port connects directly to the discharge port, you cannot use it with
motors in series. This circuit is typical of conveyor or auger systems where multiple
motors use a common ow source.
Bypass solenoid valve with motors in series
MBMA
AD
This circuit uses three motors in series with a solenoid operated directional valve and pump relief.
B
AD
MBMA
B
AD
MBMA
B
BC332376129115en-000101 • February 2020
MM - 17
Motor Mount HIC Technical Information
MB
MA
B
A
D
Application Notes
DUAL SHOCK VALVE
WITH ANTICAVITATION
CHECKS
This valve provides overpressure
Dual shock valve with anticavitation checks
protection of the motor work ports. It
absorbs momentary pressure spikes
(shock eects). It is not a full-ow
pressure relief valve: Use the dual crossport relief HIC for full-ow pressure
A
B
protection or torque limitation. The valve
protects the motor from cavitation by
allowing additional ow to the motor
through the drain port when the motor overruns the pump. This is useful in series wheeldrive applications where one motor must turn faster than the other while the vehicle is
cornering. Other applications include auger drives, conveyer drives, slew drives, or any
rotary working circuits that experience shock eects.
A dual shock valve with anti-cavitation motor mount HIC is typically used in circuits
where limiting the torque spikes from the load is critical, where the load is very dynamic,
or where distance from the system relief valve causes delayed responsiveness. The
anticavitation function is also benecial in high inertial load applications.
Because the valves seat on the cavity, the housing is made of ductile iron. This limits
wear. Only dual valve congurations are available. This HIC uses the PVLP shock valves
from our PVG line of ow-sharing directional valves. For more information on PVLP, refer
to the PVG 32 Technical Information Manual, 520L0344.
Dual shock valve with anticavitation checks
BC332376129115en-000101 • February 2020
MM - 18
Motor Mount HIC Technical Information
Application Notes
DUAL SHOCK VALVE
WITH ANTICAVITATION
CHECKS (continued)
Sample system circuit
Single motor with drain, open center/closed port directional valve
A typical rotary circuit application for a shock valve with anticavitation contains a pump,
directional control valve, system relief valve, and motor. Without this valve there is no
over-pressure protection at the motor work ports and no protection against cavitation
during overrun.
In this circuit, a dual shock valve with anticavitation HIC is mounted to a standard motor,
providing functionality in both directions. Moving the directional control valve to the left
causes the motor to rotate in one direction. When the motor load exceeds the pressure
setting of the shock valve, the valve opens allowing ow to bypass to the drain port. If
the drain port is not connected, the ow discharges through the anticavitation check
to the opposite system port. The shock valve remains open until the load on the motor
decreases below the pressure setting.
The system relief valve in this circuit provides full-ow pressure protection close to the
gear pump. The shock valves protect the
Dual shock valve with anticavitation checks
circuit from pressure spikes closest to the
load.
The anticavitation function prevents
motor cavitation when the motor
overruns pump ow. For anticavitation
to function properly, it requires a ow
source, typically drawing from the
MBMA
reservoir through the drain port as
shown in the circuit.
BC332376129115en-000101 • February 2020
A
Single motor with closed center directional
valve and system relief valve. Connection at
port D is necessary for anticavitation function.
D
B
MM - 19
Motor Mount HIC Technical Information
Application Notes
DUAL SHOCK VALVE
WITH ANTICAVITATION
CHECKS (continued)
Applications that do not require
anticavitation protection can use the
anticavitation checks as drain checks.
Connecting the motor drain directly to
the drain port on the HIC allows drain
ow to join motor discharge and return
to the reservoir through the directional
control valve. This saves running a motor
drain to the reservoir, but doing this
defeats the anticavitation feature: Do
not apply the valve in this fashion unless
your application never experiences
overrunning loads.
Because the drain port is connected
to the motor case, pressure spikes
in this circuit discharge through the
downstream motor port.
Dual shock valve with motor drainUsing anticavitation checks as drain checks
MBMA
A
D
B
BC332376129115en-000101 • February 2020
Single motor with drain shown. Connect motor
drain to port D on HIC to use anticavitation
checks as drain checks. This defeats anticavitation
function.
MM - 20
Motor Mount HIC Technical Information
OMPX/OMRX (SA-C1
227.3
[8.95]
161.
[6.37]
96]
[1
[1
[2
[3.09]
MMHIC Test Block - 11025000
OPERATIONSchematic Diagram
Use this steel test block for setting or
testing motor-mount HICs. It contains
the mounting patterns for OMPX, OMRS,
MOUNT
OMP/OMR/OMH (LEGACY)DH/DS (LEGACY)
)
OMPX/OMRX (SO-A3)
MOUNT
OMH, OMP, OMR, OMS, and OMT motors.
Interface ports are SAE.
SPECIFICATIONS
Rated pressure345 bar [5000 psi]
Weight16.21 kg [35.7 lb]
This is a single-counterbalance HIC (A
port) that mounts to OMPX motors with
manifold mount porting (SA-C1). The
OMPX motor replaces the legacy DH
motor.
Theoretical performance
psi
bar
26 cSt [121 SUS] hyd.oil at 50°C [122°F]
25
300
20
15
200
10
0
5
0
102030405060
Cross-sectional view
963
Pilot open
12
Free flow
l/min
15
mm [in]
Schematic
Specications
Rated pressure210 bar [3045 psi]
Rated ow at 22 bar
[319 psi]
Leakage6 drops/min @
Weight1.49 kg [3.28 lb]
Pilot ratio3.0:1, 4.5:1, 10.0:1
CartridgeCB10-HV
PlugSDC10-V-3S-B1
Service mount kit11023864
MotorOMPX
This is a single-counterbalance HIC (A
port) that mounts to OMRX motors with
manifold mount porting (SA-C1). The
OMRX motor replaces the legacy DS
motor.
Theoretical performance
psi
bar
26 cSt [121 SUS] hyd.oil at 50°C [122°F]
25
300
20
15
200
10
0
5
0
102030405060
Cross-sectional view
963
Pilot open
12
Free flow
l/min
15
mm [in]
Schematic
Specications
Rated pressure210 bar [3045 psi]
Rated ow at 22 bar
[319 psi]
Leakage6 drops/min @
Weight1.60 kg [3.53 lb]
Pilot ratio3.0:1, 4.5:1, 10.0:1
CartridgeCB10-HV
PlugSDC10-V-3S-B1
Service mount kit11023865
MotorOMRX
This is a single-counterbalance HIC
(A port) that mounts to OMPX/OMRX
motors with BSP porting (SO-A3). The
OMPX and OMRX replace the legacy
OMP and OMR motors.
Theoretical performance
psi
bar
26 cSt [121 SUS] hyd.oil at 50°C [122°F]
25
300
20
15
200
10
0
5
0
102030405060
Cross-sectional view
963
Pilot open
12
Free flow
15
mm [in]
l/min
Schematic
Specications
Rated pressure210 bar [3045 psi]
Rated ow at 22 bar
[319 psi]
Leakage6 drops/min @
Weight1.43 kg [3.15 lb]
Pilot ratio3.0:1, 4.5:1, 10.0:1
CartridgeCB10-HV
PlugSDC10-V-3S-B1
Service mount kit11023162
MotorOMPX/OMRX