Futtura MCB1 Owner's manual

Installation Manual
& Technical Information
Automatic Laser Control
Control Box
Model 0CB
Model 0CB
Software Version 4.00
ATI-010864 Rev
D

Disclaimer
All documentation, data, dimensions, and drawings in this manual were compiled and checked
with great care, however Futtura Tools & Technologies, Inc. cannot assume responsibility for
possible errors or omissions. We reserve the right to change designs and specifications without
notice.
Futtura Tools & Technologies, Inc. accepts no liability whatsoever for direct or indirect damage
that may occur due to the unauthorized or improper use or interpretation of this document, and
also shall not be liable for direct or consequential damages resulting from the improper service,
application, maintenance or use of the product.
This document is strictly for the use of qualified service technicians with the requisite technical
skills, training, and facilities. This manual should be read completely before installing the
product.
Reproduction of any or all parts of this manual, including electronic, is prohibited without the
written permission of the Futtura Tools & Technologies, Inc. It also may not be used for any
purpose other than for which is was intended, nor made accessible or communicated in any
form to any third party not expressly authorized by Futtura Tools & Technologies, Inc.
June 2015
Futtura Tools & Technologies, Inc.
100 N Rockwell Ste 96
Oklahoma City, OK 73127 USA
Phone: [phone]
Fax: [phone]
Website: www.futturaus.com
Email: [e-mail]

1
Automatic Control
Safety
...............................................................................................
2
Pre-Installation
.................................................................................
3
General Installation
..........................................................................
3
Control Box Controls and Displays
...................................................
7
Control Box Confi guration
and Set Up
.............................................
9
APPENDICES
A. MCB1 or MCB2 Operator’s Manual
..............................................
15
B.
Hydraulic Valve
Guide and Valve Wiring
......................................
16
C.
Cable Diagrams
...........................................................................
1
9
D.
LED Counter
Switch
LED Counter SwitchLED Counter
....................................................................
2
2
E. Operation Switches Reference Page
...........................................
2
3
F. Installation Switches Reference Page
..........................................
24
G
. Advanced Installation
Switches Reference Page
........................
25
H. Internal Switches Reference Page
..............................................
2
6
I
.
Self Diagnosing
Faul
t Codes
.........................................................
27
J. Valve Identifi cation and Setting Recomendation
...........................
29
K. Miscellaneous Installation Information
..........................................
30
T
ABLE OF CONTENTS
TABLE OF CONTENTST
© Futtura Tools & Technologies, Inc. 2015
All rights reserved. No part of this manual may be reproduced, or transmitted in any form
or by any means, electronic, mechanical, photocopying, recording, or otherwise, without
prior written permission of
Futtura Tools & Technologies, Inc.

2
Automatic Control
WARNING
: Indicates a potential hazardous situation, which could result in death or serious injury.
CAUTION
: Indicates a potentially hazardous situation, which could result in a minor or moderate
injury and/or material, fi nancial, or environmental damage.
NOTE:
Important information to enable the product to
be used in a correct and effi cient manner
unrelated to safety.
NOTE:
The installation technician should be a qualifi ed person who is familiar with the installation,
construction, and operation of the machine and laser equipment and the hazards involved.
NOTE:
The user of this product is expected to follow all operating and safety instructions of this manual
and of the machinery
operator’s manual. Perform periodic checks of the product’s
performance. The
manufacturer or its
representatives assume no responsibility for results
of the use of this product
including any direct, indirect, consequential damage, and loss of profi ts. Check your work frequently.
WARNING:
High pressure fl uid is present in operational hydraulic systems. Fluids under high
pressure are dangerous and can cause serious injury or death. Do not make modifi cations, repairs
or adjustments to any hydraulic system unless you are competent or working under competent
supervision. If in doubt consult a qualifi ed technician or engineer.
WARNING
: When working near construction or agricultural machinery, follow all safety precautions
as described in the machinery’s user manual.
Familiarize yourself with all basic functions of the
machine before operating or beginning any work.
WARNING: Do not remove the back panel of the control box. The back panel is to be accessed by
authorized Futtura Tools & Technologies service personnel only .
WARNING:
Be aware of all overhead obstructions and electrical power lines. The receiver and mast
may be higher than the machinery. Remove when transporting.
WARNING:
When excavating or trenching, follow all excavation and trench safety regulations and
practices.
CAUTION: Do not disassemble any part of the receiver other than to replace batteries. The receiver
is to be serviced by authorized Futtura Tools & Technologies service personnel only.
CAUTION:
Ensure all equipment is properly installed, the MCR receiver is secured in its
mounting position, and all cables connections are tight and secure.
NOTE:
Environmental Limits: Suitable for use in an atmosphere appropriate for human habitation (no
protection in an aggressive or explosive environment).
SAFETY
Meaning of Symbols

3
Automatic Control
PRE-INSTALLATION
The following should be reviewed with the owner and/or operator prior to installation:
• Machines must be within the manufacturer
’
s specifi cation for fi ne grading. Loose
linkage or “slop” between the blade and lifting cylinder will adversely affect grade
performance.
• Similarly, uneven cutting edge wear will result in non-uniform grade surfaces.
•
Existing wear or damage to the machine
’
s hydraulic system including heat damage,
oil contamination, existing leaks at fi ttings, hoses, valves, or cylinders and kinks or
abrasion damage to hoses should be addressed.
•
Maintenance program or rebuild/overhaul history if the machine is an older model.
GENERAL INSTALLATION
System Description - 0CB
Futtura Automatic Blade Control is used on construction grading machinery to automatically
control the blade in earthmoving and grading applications. It is also used on agricultural drainage
and land leveling machinery.
A single MCR laser receiver mounts above the cutting edge of the blade. The Model MCB2
control box mounts in the machine's cab.
A
hydraulic installation kit ties into the machine’s hy-
A hydraulic installation kit ties into the machine’s hy-A
draulic system. Grade information from a rotating laser is processed and automatically directs
the machine’s hydraulics to maintain the elevation of the blade.
The
Model MCB2 control box will work with many types of hydraulic valves, from on/off (bang-
bang) solenoid valves to fully proportional valves.
The system is designed to work with a single MCR machine control receiver. The system
will accept MCR models 2, MC2E, or 3.
NOTE:
If the MCR receiver was purchased prior to the purchase of the control
box, check with the factory as updates to the receiver may be required. Please have
the receiver model and serial number available. These updates are free of charge.

4
Automatic Control
GENERAL INSTALLATION
System Description - 0CB
The
Model MCB1 control box is similar in confi guration to the Model MCB2 control box, but there
are some differences.
The
Model MCB1 control box will work with only on/off (bang-bang) solenoid valves. It will not
work with proportional current or proportional voltage valves.
The MCB1 is designed to work with a single MCR machine control receiver. The system
will accept MCR models 1, 2, MC2E, or 3.
The valve drive selector switch (15) does not function with the MCB1. Refer to controls and
confi guration sections beginning on page 7.
When used with the MCR1, the on-grade deadband is limited to 1 inch (25 mm) total.
The MCR1 has a total of 2 inches of proportional photocells which leaves a minimum
of 1/2 inch for grade corrections on each side. When combining wide deadbands and low gain
settings, the valve may not reach 100% valve on duty cycle on large corrections.
NOTE: The MCR1 is designed to work with the MCB1 control box only.
NOTE:
If the MCR receiver was purchased prior to the purchase of the control
box, check with the factory as updates to the receiver may be required. Please have
the receiver model and serial number available. These updates are free of charge.

5
Automatic Control
GENERAL INSTALLATION
C
omponents
Control Box
The Control Box should be mounted in a location that is easily visible to the operator, is within
easy reach of the operator’s hands, and can be easily installed and removed. Insure that the
location does not interfere with other machine controls or operator movements.
The
Control Box
has vented drain holes on the rear bottom
of the unit that must face
downward.
A control box mounting bracket (ATI-950054) is designed to accept the
mounting knobs that are included with the control box.
0&5 Receivers
The MCR receivers mount to round masts from sizes 1.66” to 2.00” O.D. (42 to 50 mm)
and to 1-1/2” (38 mm) square tube.
The communication protocol for the MCR receivers is proprietary RS485 @ 62.5 kbaud.
Masts
The Model STM1 shock mounted manually telescoping mast allows the receiver to be positioned
above the machinery for unobstructed laser reception.
A mast mounting plate
that is welded to
the blade is also available.
I
nstallation instructions are provided with the mast
and are also in Appendix J.
Hydraulic Valve:
The MCB2 Control Box supports Proportional Time (PT), Proportional Current (PC), and
Proportional Voltage (PV)
hydraulic valves.
The MCB1 Control Box supports Proportional Time (PT) valves only
For specifi c information on these valves, please refer to Appendix
B
.
H
ydraulic installation kits are available for several common machines. Some kits contain the
hydraulic valves, valve brackets, hydraulic hoses and fi ttings necessary for automatic control
of a specifi c machine. Other valve kits require some additional components to be supplied. A
separate installation guide is included with the hydraulic kit.

6
Automatic Control
GENERAL INSTALLATION
System Wiring
Cables are generally shipped at the predetermined length required for a particular machine.
Connectors are installed at the factory.
Plan the routing of all cables prior to actual installation.
All cables should be properly installed. Cables should be attached to the machine at a minimum
of every 2 to 3 feet (.6 to 1.0 meter) or less to try to eliminate cable movement and possible
abrasion damage. Special care should be taken at fl ex points to ensure the cable moves freely
and does not rub on other hoses, fi ttings, or the machine. Provide
adequate cable length to avoid
pinching, stretching, and tight bending
. Also, cables should not
be clamped to pipes or hoses
that will cause the cable to b
e exposed to high temperatures.
Connect the 4-socket connector on the power cable to the 4-pin
connector on the box. Route
the cable to the machine's battery and connect the terminal ends to the battery. The red terminal
is for the positive post and the black is for ground. The box has reverse polarity protection in
case the terminals are connected improperly.
NOTE:
In order to utilize the machine's master disconnect, the ground wire must
be connected to the machine frame.
Connect the 6-pin receiver cable end to the 6-socket connector on the box. Route the cable to
the receiver. Connect the 7-socket receiver cable end to the 7-pin connector on the bottom of
the MCR receiver.
If a receiver cable with a junction block is used, follow the instructions provided with the cable.
Connect the 10-pin valve cable to the 10-socket connector on the box. Route the cable to the
valve and connect the open-ended wires to the valve following the directions for the valve.
Cable diagrams and part numbers are in Appendix C.
Optional Remote Switch
The remote switch assembly is designed to mount to lever shafts from 3/8 to 1-1/8 in.
(10 to 28 mm)
The switch can be a single function of Auto / Manual selection or can be confi gured with the
additional Raise / Lower function.
Cable diagrams and part numbers are in Appendix C.
Additional installation instructions are provided with the
switch and are also in Appendix J.

7
Automatic Control
C
ONTROL B
OX
- CONTROLS AND DISPLAYS
Front View
1. LED grade display
2. Power ON / OFF push switch
3. Power ON indicator
4. Automatic / Manual toggle switch
5. Automatic ON indicator
6. Manual ON indicator
7. Raise / Lower toggle switch
8. Access panel thumbscrews
9. Access panel
1
2
3
7
9
4
5
6
8
8
Operation Switches:
10. Rotary switch - On-Grade Deadband selections
(Default setting is "8".)
11. Dip Switch 4-way - Performance selections
(Default setting is all in the OFF position.)
12. Rotary switch - Valve gain (speed)
(Default setting is "8".)
Installation Switches:
13. Rotary switch - Valve balance (raise/lower)
(Default setting is "8".)
14. Dip Switch 4-way - Valve set-up
(Default setting is all in the OFF position.)
15. Dip Switch 4-way - Valve drive selector
(Default setting is all in the OFF position.)
16. Fuse, 25 amp
The 3 left side switches (10, 11, 12) are used by the operator to set operating functions.
The 3 right side switches (13, 14, 15) are used during installation for specifi c valves and machine
settings.
These should not be changed by the operator.
10
11
12
13
14
15
16
Operation
Switches
Installation
Switches

8
Automatic Control
C
ONTROL B
OX
- CONTROLS AND DISPLAYS
Rear View
17. 6-socket connector - laser receiver
18. 7-socket connector - optional remote switch
19. 10-socket connector - hydraulic valve outputs
20. 4-pin connector - machine power input
21. Identifi cation / serial number label
22. Mounting knobs for bracket
1
7
1
9
20
1
8
21
2
2
2
2

9
Automatic Control
CONTROL BOX - CONFIGURATION
Valve Selection (15)
The Valve Drive Selector Dip Switch (15) is used to select the type of valve to be driven when
used with the MCB2 Control Box. Following are the types of valves supported:
PT
- Proportional Time
O
n/off (bang-bang) valve
drive
PV
- Proportional Voltage Danfoss valve driv
e
PC
- Proportional Current Variou
s dither frequencies (Hz) and
dither amplitudes (% of maximum correction)
Additional information on the types of supported valves are in Appendix B.
Reference Appendix J for a list of common valve models and their Control Box settings.
NOTE:
The MCB1 Control Box supports PT valves only. Switch settings are not functional.
MCB2 Settings are as follows
:
If the control box power was on during valve selection, cycle the box power before proceeding.
Proportional Current Valves: Dither is a signal which is constantly sent to the valve that causes
the spool to vibrate and stay lubricated. This reduces hysteresis and stiction.
Choose a setting closest to the manufacturers recommendations.
If cylinder lines or cylinder are vibrating from dither, select a higher frequency and/or
lower the % amplitude.
If the valve is sticking or sluggish, select a lower dither frequency and/or a higher
% amplitude.
PT
PV
PC
100 Hz, 10%
PC
50 Hz, 10%
PC
2
00 Hz, 10%
PC
4
00 Hz, 10%
PC
5
0 Hz, 20%
PC
100 Hz, 20%
PC
2
00 Hz, 20%
PC
4
00 Hz, 20%
Switch Bats
in ON position

10
Automatic Control
CONTROL BOX - CONFIGURATION
If auxiliary valve drivers and remote switches are desired, please consult the factory. Auxiliary
valve drivers can be used via remote switches to drive other functions like scraper bowl eject,
gate open and close, etc.
Once the proper valve is selected, perform a system communication check. Turn the box on to
confi rm power. Check that the receiver is communicating properly. Check the raise/lower and
auto/manual switches. Check the remote switch functions if installed.
Check for proper hydraulic system operation. Ensure there are no leaks, excessive engine load
or pressure relief valves continually opening. Check that all circuits function properly
.
NOTE:
Before proceeding, warm up the hydraulic system to operating temperature.
Run the machine at operating RPM for approximately 15 minutes
while cycling the
blade lift cylinder.
V
alve Set Up (1
Valve Set Up (1V
4)
-
Set Valve Mi
nimum
Correction
The
Valve Minimum Correction (
VMC) is set to provide output fl ow as soon as a correction signal
is received providing
f
or optimum system performance
for optimum system performancef
.
The edges of the valve spool have some degree of overlap with the corresponding edges of the
valve body ports. This is required to prevent fl ow across the spool when it is in a neutral position.
This spool overlap means that there will be a defi ned
movement of the spool in the bore before
fl ow begins to take pla
ce.
This characteristic is sometimes referred to as valve “deadband”. In
this text,
adjusting the control box to account for this deadband and create a minimum blade
velocity will be referred to as
the
Valve Minimum Correction (
VMC)
to avo
id any c
onfusion with
laser system deadband
or accuracy.
Spool Overlap - Minimum distance
to move valve for fl ow to begin.
T
he
VMC is adjusted by using the LED Counter Switch as descri
bed in App
endi
x D.
Adjustment
is made for both the raise minimum correction and the lower minimum correction.
The VMC for PT valves is adjusted in increments of time. The VMC for PC or PV valves is a
percentage of maximum valve correction.
Valve Type
Valve Type
VMC Increment
Adjustment Range
Adjustment Range
PT
10 ms
0 - 310 ms
PC, PV
2% of max.
0 - 62% of max.

11
Automatic Control
CONTROL BOX - CONFIGURATION
V
alve Set Up (1
Valve Set Up (1V
4)
-
Set
Valve Minimum Correction
Set the machines throttle to normal operating RPM.
Place the blade approximately 1 foot (0.3 m) above the ground.
No laser is required.
R
AISE Minimum
Correction
:
(switch 1 in ON position)
1.
Toggle raise/lower switch to
raise a
nd hold.
2. If no blade movement, release sw
itch. If there is move
ment, skip to step 5.
3. Toggle aut
omatic/
manual switch once to auto to increase VMC one unit.
4. Return to step 1.
5. Observe blade sp
eed.
Goal is
0.5 i
nches (13 mm) per s
e
co
nd.
6. If blade speed is too slow, continue increasing VMC
and checking bla
de speed.
If blade speed is too
fast, toggle A/M switch towards manual to decrease VMC.
7. After proper VMC setting is obtained, note value.
8. Adjust DIP switch to OFF position.
L
OWER Minimum
Correction
:
(
switch 2 in ON position)
1. Toggle raise/lower switch to
lower a
nd hold.
2. If no blade movement, release sw
itch. If there is move
ment, skip to step 5.
3. Toggle aut
omatic/
manual switch once to auto to increase VMC one unit.
4. Return to step 1.
5. Observe blade sp
eed.
Goal is
0.5 i
nches (13 mm) per s
e
co
nd.
6. If blade speed is too slow, continue increasing VMC
and checking bla
de speed.
If blade speed is too
fast, toggle A/M switch towards manual to decrease VMC.
7. After proper VMC setting is obtained, note value.
8. Adjust DIP switch to OFF position.
Note:
It is advisable to log the various settings for each particular machine.

12
Automatic Control
CONTROL BOX - CONFIGURATION
Set
Valve Raise / Lower Balance (13)
The valve raise / lower balance set-up allows adjustment to compensate for different raise /lower
blade velocities due to cylinder imbalance or for different hydraulic system responses to different
loads.
Most mobile equipment uses double-acting hydraulic cylinders. Double-acting cylinders are also
called differential cylinders because the effective area, and therefore the volume, of each end of
the cylinder is different. The rod end of the cylinder has less area and volume than the cap end
by the nature of the rod being present. This differential area and volume causes a different force
and velocity during extension and retraction - or raising and lowering for a lift cylinder.
Set the machines throttle to normal operating RPM.
Place the blade approximately 1 foot (0.3 m) above the ground.
No laser is required.
Adjust
the val
ve set-up DIP
switch (14) to the
dynamic balance set mode.
Set the valve balance rotary switch (13) to
8.
Toggle the raise / lower switch to raise
and hold
. The blade will
oscillate up and down. Observe
the blade drifting up or down during oscillation. Adjust the rotary pot to minimize the drift.
Clockwise - toward position F - if blade is drifting down.
Counterclockwise - toward position 0 -
if blade is dri
fting up
.
NOTE
:
Ensure valve set
-up switches are in ru
n mod
e (all
swit
ches down) before
proceed
ing
Cap end of cylinder has greater volume and area than rod end.

13
Automatic Control
CONTROL BOX - CONFIGURATION
Set Performance
Options and
System Gain
Refer to the operator's manual for setting performance options that include
laser beam strike
averaging, receiver LED's on or off, and
control box LED's bright or dim.
Generally, linear gain is selected for valves that have spools with an aggressive or exponential
fl ow
characteristics
. Exponential gain is selected for valves that have spools with less aggressive
or linear fl ow characteristics. Linear gain is the default position. Machine stability and hydraulic
system reaction also infl uence the selection.
Presetting System Gain
Blade in Air Method:
E
nsure valve set up switches are in run mode.
Set the machines throttle to normal operating RPM.
Ensure the machine is on fl at ground.
Place the blade approximately 1 foot (0.3 m) above the ground.
Set up the rotating laser at a typical working range. If a selectable rotation speed
is available, set
it to 600 RPM or faster.
Mount the receiver in its normal operating position to receive
the laser.
Select an On-grade deadb
and (10) of approximately 1/2 of the j
obsite tolerance. If working at
ranges that exceed 500 feet (150 m), this may be increased to compensate for the rotating
laser's beam "b
ounce"
.
Select
manual control (4). Raise the blade to position the receiver at the lower edge of its vertical
reception range, but still receiving the beam. Select automatic control (4).
The blade and receiver will move towards on-grade. Note any overshooting of On-grade. Repeat
procedure for raise correction. Once again, note any overshooting of On-grade. Adjust the Valve
Gain switch (12) until ther
e is one small overshoot for a full receiver length correction in either
direction.
Clockwise rotation - towards F - corresponds to a faster, but less stab
le correction.
Counterclockwise rotation - towards 0 - corresponds to a slower, but more stable correction.
Set the
Valve Set-up switch (14)
to
Run Mode after completion.
A 5 second timer is also available for checking blade velocities. When set in
this mode, the raise or lower switch will activate the blade for 5 seconds when
the switch is held in the raise or lower position. The cylinde
r stroke can then be
measured. Ensure proper clearance
when using the timer.

14
Automatic Control
CONTROL BOX - CONFIGURATION
Check System
Performance
Set up the rotating laser at a typical working range. S
elect the
RPM of the laser to 600 RPM or
faster if available.
Mount the MCR receiver to the mast of the machine in a position to receive the beam.
Select a
n On-grade deadband
less than
the jobsite tolerance. Typically 1/2 the tolerance is the
value used as a starting point.
For example, if the jobsite tolerance is
±
½"
, set the
On-Grade
Deadband
rotary s
witch
(10) to
5.
This is a deadband of
±
¼
inch
or 0.50 inch total deadband.
Ensure other switches are set to "Run Mode" and the other desired options.
Fine tune the Valve Gain (12) while working in typical material a
nd operating conditions.
If the system is over correcting or too jumpy, decrease the gain setting.
If the system is not correcting fast enough or is sluggish, increase the gain setting.
Environment
al factors and
laser set up can also affect system performance. Follow the set
up
procedures for
your laser
.
Ensure proper tripods are used for stable laser operation.
Changing the laser RPM, laser strike averaging, deadband, gain type, gain setting, valve
balance, or valve minimum corrections can affect system performance. System operation should
be rechecked after changing any of these parameters.

15
Automatic Control
APPENDIX A
Control Box Operator’s Manual
An operator’s manual is included as part of this installation manual.
If missing, please request an additional copy.
MCB2 Control Box Operator’s Manual Part No. ATI-026012 Rev E
MCB1 Control Box Operator’s Manual Part No. ATI-026023 Rev C

16
Automatic Control
APPENDIX B
Hydraulic Valve G
uide
PT - Proportional Time Valve:
PT - Proportional Time Valve:
T
he PT valve, sometimes referred to as on/off or "bang-bang" valve is not a true proportional
valve. It can only be turned on or off.
The propor
tionality is achieved by rapidly turning the valve on and off
over time at varying duty
tionality is achieved by rapidly turning the valve on and off over time at varying duty tionality is achieved by rapidly turning the valve on and off
rates as shown in the chart below.
Lower
Correction
Raise
Correction
On Grade
Deadband
0%
50%
10
0%
Valve Min.
Correction
G
ain = 1
G
ain = 1
G
ain =
8
G
ain =
8
G
ain =
F
G
ain =
F
PT Valve Signal
(% On, Duty Cycle)
Full machine voltage is applied to the valve to turn it on
.
To achieve desired fl ow rates at "100%
on" corrections, proper sizing of the valve or a fl ow
control device is required.
Application Note
: These valves as a group are least expensive, but control performance is not
as smooth as with the PC or PV valves.
Si
nce this t
ype of valve pops open or closed over time, the hoses can jum
p about and the
rushing hydraulic fl uid actually make a snapping sound, hence the name "bang bang" valve is
often used.
PT Valve Wiring:
PT Valve Wiring:
(P/N ATI-026040-XX)
1
2*
GND
Danfoss PT Hirschmann Connector
1
2*
3 or 4
Danfoss PT Amp Connector
*Raise cylinder port is the port closest to black electronics module.
Lower
Ground
A
B
C
D
E
F
G
H
I
J
Raise
Load Sense
Raise
Coil
L
ower
Coil
MCB1 or MCB2
10-Socket
Connector
Blue
Green
Red
Orange
White
Black
White/Black
S
witched Power
Ground
Not Used

17
Automatic Control
APPENDIX B
Hydraulic Valve G
uide
PC - Proportional Current Valve:
PC - Proportional Current Valve:
PC valves are proportional spool valves
.
The maximum current supplied to the valve solenoid is equal to machine voltage divided by
coil resistance.
Pulse Width Modulation (PWM) is used to create the < 100% proportional current signal.
The PC signal energizes 1 coil at a time which slides the valve's spool back and forth changing
the valve's orifi ce size which changes the oil fl ow rate.
If the valve's maximum current rating is less than the maximum supplied current, (machine
voltage / coil resistance), use the PC valve current set mode (Appendix G) to lower the maximum
supplied current to within the valve's maximum rated current. Reference Appendix J for PC
valve identifi cation and control box settings.
Application Note
:
PC Valves are typically fast, but not always accurate.
Direct operated solenoid PC Valves are limited in fl ow rates to about 8 GPM (30 l/m) due to the
force capability of 12V solenoids.
PC Valve Wiring:
PC Valve Wiring:
(P/N ATI-026040-XX)
Lower
Correction
Raise
Correction
On Grade
Deadband
0%
50%
10
0%
Valve Min.
Correction
G
ain = 1
(Linear)
G
ain = 1 (Linear)
G
ain =
8
(Linear)
G
ain =
8 (Linear)
G
ain =
F
(Linear)
G
ain =
F
(Linear)
PC Valve Signal
(% of Maximum Current)
Gain = 8 (Exponential)
Gain = 8 (Exponential)
Lower
Ground
A
B
C
D
E
F
G
H
I
J
Raise
Load Sense
Raise
Coil
L
ower
Coil
MCB1 or MCB2
10-Socket
Connector
Blue
Green
Red
Orange
White
Black
White/Black
S
witched Power
Ground
Not Used

18
Automatic Control
APPENDIX B
Hydraulic Valve G
uide
PV - Proportional Voltage Valve:
PV - Proportional Voltage Valve:
Namely, Danfoss PVG32, pilot operated proportional valves with "on-board" electronics, spool
position and fault monitoring.
Lower
Correction
Raise
Correction
On Grade
Deadband
PV Valve Signal
(% of Machine Voltage)
Valve Min.
Raise
Correction
0%
50%
10
0%
G
ain = 1 (Linear)
G
ain =
8 (Linear)
G
ain =
F
(Linear)
Gain = 8 (Exponential)
25%
7
5%
Valve Min.
Lower
Correction
The PV valve signal is a low power ratiometric voltage signal that references the switched
power output (machine voltage).
I.e. 50% of machine voltage = No fl ow
25% of machine voltage = Full lower
75% of machine voltage = Full raise
Danfoss diagnostics: Green LED on valve = OK
Red LED on valve = Fault
Application Notes: PV valves provide larger fl ows up to 32 GPM (120 l/m) and have more
accurate fl ows. For best performance use PVEH actuation modules and linear spools.
Valves are easily converted to interface with open center, closed center, and load sensing
hydraulic systems.
Raise cylinder port is the port closest to the black electronics module.
PV Valve Wiring:
PV Valve Wiring:
(ATI-026040
-XX)
D.F. Diagnostic
S
witched Power
Ground
MCB2
10-Socket
Connector
3
1
2
GND
P
V Signal
Danfoss Hirschmann Connector
4
2
1
3
Danfoss Amp. Connector
A
B
C
D
E
F
G
H
I
J
Blue
Green
Red
Orange
White
Black
White/Black
Ground
Not Used
Load Sense