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Service TrainingMALAGA
300B Hydraulic Excavators
AUXILIARY
HYDRAULIC CONTROL
FrancisNOV 97
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3T-3132
Hammer2ndSpeed
Lo Hi
L970 - GY
547-OR
549-PK
548-GY
546-BU
954-GN
Aux Hyd Contr
950-BR
A849-OR
585-YL
A850-WH
PILOTPUMP
951-PK
LHS RHS
AUXILIARYCONTROLVALVE
198-PK
NFC
AUX. PILOT MANIFOLD
952-OR
117-8919
191 - WH
131-9203
106-0179
961-BR
MAINPUMPS
200 - BK
NFC
PILOT PUMP
1114878
Medium Press Circ
HammerPress.Switch
37
COMBINED CIRCUITNEUTRAL (Single Action)
121-1491121-1491111-9916
AC1 AC2
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3T-3132
Hammer2ndSpeed
Lo Hi
EL970 - GY
547-OR
549-PK
548-GY
546-BU
954-GN
Aux Hyd Contr
950-BR
PILOTPUMP
A849-OR
NFC
117-8919
585-YL
A850
-WH
MAINPUMPS
951-PK
NFC
LHS RHS
198-PK
952-OR
191 - WH
131-9203
106-0179
961-BR
200 - BK
PILOT PUMP
1114878
Medium Press Circ
HammerPress.Switch
37
NOTE: The hammer mode must be activated with Power + Mode and Boom Priority sele
300B COMBINED CIRCUITHAMMER ACTIVATED
AUX. PILOT MANIFOLD
121-1491121-1491111-9916
ATTACHMENTCONTROLVALVE
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Medium Press Circ
HammerPress.
Switch
37
PILOTPUMP
AUXILIARYCONTROLVALVE
NFC
117-8919
MAINPUMPS
NFC
300B COMBINED CIRCUITHAMMER/BOOM ACTIVATED
AUX. PILOT MANIFOLD
121-1491121-1491111-9916
3T-3132
Hammer2ndSpeed
Lo Hi
EL970 - GY
547-OR
549-PK
548-GY
546-BU
954-GN
Aux Hyd Contr
950-BR
A849-OR
585-YL
A850-WH
951-PK
LHS RHS
198-PK
952-OR
191 - WH
131-9203
106-0179
961-BR
200 - BK
PILOT PUMP
1114878
NOTE: The hammer mode must be activated with Power + Mode and Boom Priority selec
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Medium Press Circ
HammerPress.Switch
37
PILOT
PUMP
ATTACHMENTCONTROL
VALVE
NFC
117-8919
MAINPUMPS
NFC
300B COMBINED CIRCUITDOUBLE ACTION
AUX. PILOT MANIFOLD
121-1491121-1491111-9916
3T-3132
AttachCtrl Vl
MediumPress
Lo Hi
EnL970 - GY
Aux Hyd Contr
LHS RHS
191 - WH
131-9203
106-0179
200 - BK
PILOT PUMP
1114878
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A
M
LS
25
175
131-9203
T P
3T-3132
AttachCtrl Vl
MediumPress
Lo Hi
Eng / Pump CtrlL970 - GY
547-OR
549-PK
548-GY
546-BU
954-GN
Aux Hyd Contr
950-BR
A849-OR
585-YL
A850-WH
LHS RHS
198-PK
952-OR
961-BR
200 - BK
PILOT PUMP
1114878
117-8919
AUX PUMP132-5975
VALVE GROUP125-8075
200-BK
191 - WH
106-0179
HammerPress.
Switch
37
(ATCH VAL)
ABC
A847-YL
A848-PK
200-BK
To AC1 aux sol.To AC2 aux sol.
To F/C aux prop. sol.
MEDIUM PRESSURE CIRCUIT (Neutral)
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CHAPTER : Auxiliary Hydraulic Control
AUXILIARY HYDRAULIC CONTROLLER
(122-9897)
When the controller in "ON", the first information displayed is the version of thecontroller.
The controller "Display/Keypad" has the following modes:
- Active mode (Aux/Hyd controller is operating)- Inactive mode (Aux/Hyd controller is not operating)- Programming mode
ACTIVE MODE
During the Aux/Hyd controller operation, the Display will visualize the selected
working mode. The Aux/Hyd controller has 4 different working modes:
1 L 1
2 H 1
3 L 2
4 H 2
The 4 different working mode are combined as follows:
1 _ _ _ L 1 = Low Mode One Way
2 _ _ _ H 1 = High Mode One Way
3 _ _ _ L 2 = Low Mode Two Way
4 _ _ _ H 2 = High Mode Two Way
Example : _ _ 2 . 1 0 _
NB. In each major change (software or hardware) that will affect the operation of thecontroller, the left side digit will be increased.In each minor changes, the digits on the right will be increased.
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CHAPTER : Auxiliary Hydraulic Control
AUXILIARY HYDRAULIC CONTROLLER
(122-9897)
To visualize all these information the Arrow Key must be pushed.The first information shown on the display will be the number of ours of the currentactive working mode. Pressing the Arrow Key again, will display the next operatingengine speed information. Pressing The Arrow Key again, the operating flow willbe displayed.
- Number of hours the tool has already accomplished in that working mode.- Operating engine speed set up for that working mode.- Operating flow set up for that working mode.
INACTIVE MODE
2 H 1
2 X
2 H 1
2 H 1
Example : Active Working Mode
X X Xh
E Y Y
F n n
3 X
3 L 2
3 L 2
X X Xh
E Y Y
F n n
4 X
4 H 2
4 H 2
X X Xh
E Y Y
F n n
1 X
1 L 1
1 L 1
X X Xh
E Y Y
F n n
2 XX X Xh
NB. Use the arrow key to visualize all settings by scrolling down.
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CHAPTER : Auxiliary Hydraulic Control
AUXILIARY HYDRAULIC CONTROLLER
(122-9897)
The engine speed parameters can be set between 01 and 10 (speed dial position).
The operating flow parameters can be set between 00 and 99.
2 H 1
Engine speed parameters display
PARAMETERS ADJUSTMENT
E 0 9
2 H 1
Operating flow parameters
E 5 0
As an example we have recorded on a 325B the following flow values. The enginespeed has been set at dial 9 and the machine in One Way configuration.
Flowparam.
FlowLtr/min
SysPresskPa
NFCPresskPa
10 102 15000 3081
20 151 15300 2693
25 177 15000 2504
30 198 15100 2328
35 215 15000 2162
40 234 14900 2007
262 15100 183945
50
55
60
297 14800 1696
323 15100 1550
325 15200 1410
DISPLAY WINDOW
NOTE.The above table should be consideredas reference only. As the Aux/Hydcontroller is regulating the pump flowthrough the NFC pressure, it is notguarantee that each machine will havethe same flow for the same flow param.setting.
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CHAPTER : Auxiliary Hydraulic Control
The adequate flow and engine speed parameters must be adjusted within theprogramming mode to meet the auxiliary tool requirements. In most of the cases,the machine will probably have to be tested prior to recording these values.
The programming mode enables the machine to be tested without living the mode,the Keypad remains active and the Display still visualizing whether the flow or enginespeed parameters during the Aux/Hyd controller operation. The best practice will bewithin the programming mode to set first the engine speed to the desire value andthen, increase the flow parameters step by step starting from the minimum value,testing each of the values until the requested flow is reached. (Ref. to Hammerinstallation procedure)
TESTING WITHIN THE PROGRAMMING MODE
ERROR CODES:
Error 1 : open circuit in NFC proportional reducing valve.
Error 2 : Aux/Hyd Controller NFC proportional reducing valve output is short -grounded.
Error 3 : Aux/Hyd Controller AC1 or AC2 output are short - grounded.(AC1 and AC2 are ON/OFF solenoids)
Error 4 : Aux/Hyd Controller HAM2 R1 or R2 outputs are short - grounded.
NOTE. The display of the Error-Codes has priority over the rest of the display codes,but does not affect the function of the Aux/Hyd Controller.
Several Error-Codes can appear at the same time, the Aux/Hyd Controllerwill display on the screen the last Error-Code detected.
The Error 1 and 2 can appear in both active or inactive modes.The error 2 and 4 appear only when the Aux/Hyd Controller is operating. As the Aux/HydController is continuously checking the NFC proportional reducing valve signal, theError 1 and 2 will disappear automatically when the problems are solved.
The Error 3 and 4 will disappear at the next Aux/Hyd Controller operation.If one or several Error-Codes are detected, start to fix the firs Error-Code displayed,then check if additional Error-Codes are displayed. The Aux/Hyd Controller canvisualize the errors only one at the time.
In case of Errors 1 and 2, the Aux/Hyd Controller will proceed as follows :
- Deactivation of AC1 and AC2 output signals.
- If for any reason the Activation Pressure SW Signal is "ON", the Aux/HydController will decrease the engine speed to Dial 1.
Error 5 : Aux/Hyd Controller detects malfunction of the Activation PressureSwitch . The pressure switch is located on the PTA port of the auxiliary
control valve. When ERROR 5 is displayed, maximum pressure is sentto the NFC port for minimum flow output.
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CHAPTER : Auxiliary Hydraulic Control
AUXILIARY/HYDRAULIC CONTROLLER
1 h X X X X
1 E X X L 1
1 F X X L 1
2 h X X X X
2 E X X H 1
2 F X X H 1
3 h X X X X
3 E X X L 2
3 F X X L 2
4 h X X X X
4 E X X H 2
4 F X X H 2
1 h X X X X
1 E X X H 1
WORKING MODE
1- Low Mode One Way
2- High Mode One Way
3- Low Mode Two Way
4- High Mode Two Way
SETTING
h- Hours of working Mode
E- Engine RPM of Working Mode
F- Flow of Working Mode
DISPLAY VALUE
OF WORKING CONDITIONS
- hours
- Eng. RPM
- Flow
L1 = Low Mode One Way
H1 = High Mode One Way
L2 = Low Mode Two Way
H2 = High Mode Two Way
WORKING MODE
COFIGURATION
PROGRAMMING
CHANNELS
SELECTION
DISPLAY WINDOW
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CHAPTER : Auxiliary Hydraulic Control
AUXILIARY/HYDRAULIC CONTROLLER
ACCESS TO PROGRAMMING MODE
ENTER KEY PLUS KEY MINUS KEYARROW KEY
To access the programming mode, press the keys as follow:
" ++", "-","+","--", Then press enter key
DISPLAY WINDOW
Exemple : Current active mode L 2, change flow parameters from 00 to35.Select first the flow parameters with "Arrow Key" then, press on "+ " or"-" key until you have reached 35
(Could be any other value)
To save the new parameters press "Enter Key" and then "+" Key, the last digit "P"will change from "P" to "S"(Saved)
To end the programming mode press "Enter Key" and then "Arrow Key'.
TO CHECK THE DIFFERENTS WORK MODE SETTING, PRESS "ARROW KEY",THE DISPLAY WILL SCROLLNOTE: To modify the engine speed and the flow parameters of another working mode,
the position of the One Way (Hammer) or Two way (Shear) Ball-Valve Leverand the Rocker Switch (tortoise or rabbit) must be selected. The position mustbe set to have the desire mode active, the controller authorizes to change onlythe parameters of the courrent active mode
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CHAPTER : Auxiliary Hydraulic Control
NFC Adjustment
TorquePiston
NFC Piston
Sleeve
PowerScrew
ControlSpring
Controlpiston
ActuatorSpring
Actuator
Max AngleAdjust.
PortPlate
Piston
RetainerPin
PilotPump
Pilot PumpDrive Gear
Barrel
300B MAIN HYDRAULIC PUMP(SECTIONAL VIEW)
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CHAPTER : Auxiliary Hydraulic Control
NFCAdjustment
Horsp.Adjus.
Max AngleAdjustment
To ControlValve
NFCPressure
ActuatorPiston
PSPressurefrom PRV
NFCAdjustment
Horsp.Adjus.
Max AngleAdjustment
To ControlValve
NFCPressure
PWMPress sensor
(Standby)
TWO PUMP CONTROLS
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CHAPTER : Auxiliary Hydraulic Control
(2 Pumps Flow)
TWO PUMP CONTROLS
NFCAdjustment
Horsp.Adjus.
Max AngleAdjustment
To ControlValve
NFCPressure
ActuatorPiston
PSPressurefrom PRV
NFCAdjustment
Horsp.Adjus.
Max AngleAdjustment
To ControlValve
NFCPressure
PWMPress sensor