HH45, HH55, HH65, and HH75
Harvester Heads
Electrical System
2JZ1-UP
RENR3008-01
February 2000
3MZ1-UP
4RZ1-UP
5WZ1-UP
©
2000 Caterpillar
All Rights Reserved
Printed in U.S.A.
A
1
B
C
D
E
F
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D
E
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789
LEFTHANDARMREST
RIGHT HAND ARMREST
+
-
+
-
+
-
+
-
+
-
+
-
+
-
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GROUND
TRANS D
ATA
TD
RECEIVED D
ATA RD
REQUEST
TO SEND R
TS
CLEAR
TO SEND CTS
DATA SET READ
Y DSR
GROUND
+12V
START
STOP/P
AUSE
FEED REVERSE
FEED FOR
W
ARD
PULP
WOOD
SHIFT
TILTDOW
N
SPARE DIGIT
AL INPUT
TILT UP
SPARE DIGIT
AL INPUT
SP
ARE DIGIT
AL INPUT
MATRIXBIT 0
MATRIXBIT 1
MATRIXB
IT
2
MATRIX BIT3
MATRIXBIT 4
SPARE ANALOG INPUT
SPARE ANALOG INPUT
SP
ARE DIGIT
AL OUT
COLOR 1
COLOR 2
SPARE ANALOG OUTPUT
TILTDOWN
SPARE ANALOG OUTPUT
TILT UP
SPARE ANALOG OUTPUT
SAWBAR RETURN
DTR
RI
TRANS D
ATA
TD
GROUND
+12V
CLEAR TO SEND
CTS
PRINTER PORT
RS232PORT
+
-
1
1
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Z2
B2
D2
Z4
B4
D4
Z6
B6
D6
Z8
B8
D8
Z10
B10
D10
Z12
B12
D12
Z14
B14
D14
Z16
B16
D16
Z18
B18
D18
Z20
B20
D20
Z22
B22
D22
Z24
B24
D24
Z26
B26
D26
Z28
B28
D28
Z30
B30
D30
Z32
B32
D32
DK HIGH
PRESS
DK
OPEN
STEER
LEFT
STEER
RIGHT
PULP
WOOD
ST
OP/
SAW
SPECIES
+
SPECIES
-
LENGTH
+
LENGTH
-
FR FWD
FR REV
SHIFT
TILT
UP
TILT DN
1
2
3
4
1
2
3
4
5
6
1
2
3
4
5
6
PINE
SPRUCE
LENGTH
+
LENGTH
-
FR FWD
FR REV
SHIFT
TILT UP
TILT
DN
TAN-18
DK BU-18
DK GN-18
WH/BK-18
BR/BK-18
BU-18
WH-18
GN-18
YL-18
BR-18
BK-18
QUAL1
QUAL2
QUAL3
QU
AL4
QUAL5
GY
-18
OR-18
PK-18
PU-18
RD-18
HA/DK
OPEN
HA OPEN
DK HI
PRESS
DK OPEN
STEER
LEFT
STEER
RIGHT
PULP
WOOD
STOP
SHIFT
SA
W
TAN-18
DK BU-18
DK GN-18
WH/BK-18
BR/BK-18
BU-18
WH-18
GN-18
YL-18
BR-18
BK-18
LEN1
LEN2 LEN3
LEN4
LEN5
RD-18
GY-18
OR-18
PK-18
PU-18
1
2
3
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10
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10
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9
10
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9
10
A
B
C
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30
1
2
3
4
1
2
3
4
RIGHT HAND ARMREST
LEFT HAND ARMREST
1
2
3
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10
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16
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37
1
1
1
1
1
2
3
4
5
6
REC'D LIN SIG DETECT
OR DCD
1
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22K
15K
15K
33K
1
1
1
1
1
1
1
1
2
3
4
5
6
1
1
2
3
4
5
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16
A
B
C
1
1
1
1
1
1
1
1
1
1
1
1
FRA/HA
HIGH PRESS
LEFT HAND KEYP
AD
RIGHT HAND KEYP
AD
CUTTING SYSTEM
ON/OFF SOLENOID
MAIN CONTROL VALVE
LEFT FEED
ROLLER MOTOR
PROP SOL
RIGHT FEED
ROLLER MOTOR
PROP SOL
DELIMBING KNIFE
CYLINDERS
ON/OFF SOL
FEED ROLLER
ARM CYLINDER
ON/OFF SOL
HOLDING ARM
CYLINDERS
ON/OFF SOL
TILT
CYLINDERS
ON/OFF SOL
G
G
G
G
G
2
3
G
2
3
G
2
3
G
2
3
G
2
3
G
HOLDING ARM
OPEN
ON/OFF SOL
ADJUSTABLE PRESS
DK CYLINDER
PROP SOLENOID
ADJUSTABLE PRESS
PROP SOLENOID
BYPASS RELIEF VALVE
PRESSURE REDUCING VALVE
1
2
3
4
+
-
+
-
+
-
+
-
+
-
+
-
+
-
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
1
CUTTING SYSTEM
ON/OFF SOLENOID
MAIN CONTROL VALVE
LEFT FEED
ROLLER MOTOR
PROP SOL
RIGHT FEED
ROLLER MOTOR
PROP SOL
DELIMBING KNIFE
CYLINDERS
ON/OFF SOL
FEED ROLLER
ARM CYLINDER
ON/OFF SOL
HOLDING ARM
CYLINDERS
ON/OFF SOL
TILT
CYLINDERS
ON/OFF SOL
G
G
G
G
G
2
3
G
2
3
G
1
1
1
2
3
G
2
3
G
2
3
G
HOLDING ARM
OPEN
ON/OFF SOL
ADJUSTABLE PRESS
DK CYLINDER
PROP SOLENOID
ADJUSTABLE PRESS
PROP SOLENOID
BYPASS RELIEF VALVE
PRESSURE REDUCING VALVE
2
3
G
1
2
3
4
1
2
3
4
1
2
3
4
5
6
7
8
9
10
12
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30
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START
HIGH PRESS DK
PULSE OPEN DK
GRAPPLE OPEN
GRAPPLE CLOSE
FRA CLOSE
FRA OPEN
DK OPEN
DK CLOSE
EXTERNAL FUSE
HI PRESS
LEFT HAND 15 KEYP
AD
DK ADJ
HA/FRA
RIGHT HAND 15 KEYP
AD
1A
EXTERNAL FUSE
1A
HA/FR CYLINDERS*
HA CYLINDERS
1
2
3
4
1
2
3
4
7
10
25
16
15
13
14
18
9
8
24
8
11
24
12
GR
OUND
+24VDC
SIGNAL
GR
OUND
+24VDC
SIGNAL
BU
BU
BR
BR
BK
B
K
YL
WH
BR
GN
BR
BR
GN
GN
YL
YL
WH
WH
SAW BAR
HOME
SENSOR
SAW BAR
POSITION
SENSOR
LENGTH
SENSOR
WH
YL
BR
GN
YL
YL
WH
BR
GN
BU
8
8
9
11
18
24
24
7
10
12
13
14
17
22
25
COLOR 2
SOLENOID
COLOR 1
SOLENOID
GR
OUND
+24VDC
SIGNAL
GR
OUND
+24VDC
SIGNAL
BU
BU
BR
BR
BK
BK
YL
WH
BR
GN
BR
BR
GN
GNYL
YL
WH
WH
SAW BAR
HOME
SENSOR
SAW BAR
POSITION
SENSOR
LENGTH
SENSOR
YL
YL
WH
BR
GN
BU
8
8
9
11
18
24
24
7
10
12
13
14
17
22
25
HH45/HH55/HH65
HH75
HARVESTER HEAD
HARVESTER HEAD
22
17
22
CONTROLS
15 BUTTON KEYPAD
CONTROLS
10 BUTTON KEYPAD
DASA 280/380
GN
YL
WH
PU
GY
PK
BK
BR
GY/PK
BU
BR/GN
WH/GN
RD/BU
WH/YL
YL/BR
RD
GN
YL
WH
PU
GY
PK
BK
BR
GY/PK
BU
GN/BR
WH/GN
RD/BU
WH/YL
YL/BR
RD
G
Y
/P
K
BR/GN
WH/GN
GN
YL
PK
WH
BR
WH/YL
RD
GY
PU
BU
RD/BU
YL/BR
BK
BR
WH
GN
YL/BR
WH
BR
BK
WH/YL
GY
PU
YL
GN
RD
WH/GN
GN/BR
PK
RD/BU
GY/PK
BU
WH/GN
YL
YL/BR
PU
GY
WH/YL
WH/YL
WH/BU
YL/BR
YL
BR/BU
GN/BR
RD/BU
BR/GN
PK
PK
BU
RD/WH
GN
PK/GN
BK
WH/GY
PK/BR
PK
BR/BK
PU
BU
GY/PK
GN/BR
BK
RD
PK/YL
BR
RD/BU
WH/GN
GN/YL
GN/GY
WH
WH/BK
GY
RD
RD/BR
BR
PK
GN/BR
PU
GY
PK
RD/BR
YL
GN/BR
WH/G
Y
RD/WH
BR/BU
WH/BU
WH/YL
GN
PK/GN
WH/GN
RD/BU
PK/YL
YL/BR
BU
RD
WH/BK
BR
PK/BR
BK
GN/GY
GN/YL
BR/BK
RD
YL
BR
GY/PK
PK
WH
BU
BK
RD/BU
BR/GN
GY
PU
WH/YL
YL/BR
WH
BR
GN
SIGNAL 1
SIGNAL 2
+24VDC
RETURN
SIGNAL 1
SIGNAL 2
+24VDC
RETURN
SIGNAL 1
SIGNAL 2
+24VDC
RETURN
WH/GN
POTENTIOMETERS
4 3
2 1
RD/WH
YL
WH/BU
GY
BU
GY/BU
GY/BR
PU
BK
BR
GY/PK
WH/GN
YL/BR
WH/YL
RD/BU
BR/GN
BR/PK
RD
GN
PK
WH
WH/GY
BR/RD
WH/BK
WH/PK
RD/WH
YL
WH/B
U
GY
BU
GY/BU
PU
BK
BR
GY/PK
WH/PK
WH/GN
YL/BR
WH/YL
RD/BU
BR/GN
BR/PK
RD
GN
PK
WH
WH/GY
BR/RD
WH/BK
GY/BR
BR
YL
PK
BU
GY
WH
YL
BR
DK ADJ
PRESS
HA/FRA
ADJ PRESS
22
17
WH
YL
BR
GN
SIGNAL 1
SIGNAL 2
+24VDC
RETURN
CROSS
CALIBRATION
BOX
LED 1
LED 2
LED 3
LED 4
LED 5
LED 6
LED 7
YL
WH
BR
GN
16
15
13
14
18
9
8
24
8
11
24
12
22
17
7
10
25
MEASURING ARM
CYLINDER
SOLENOID
15
16
WH
YL
BR
GN
SIGNAL 1
SIGNAL 2
+24VDC
RETURN
WH
YL
BR
GN
SIGNAL 1
SIGNAL 2
+24VDC
RETURN
CROSS
CALIBRATION
BOX
LED 1
LED 2
LED 3
LED 4
LED 5
LED 6
LED 7
YL
WH
BR
GN
CONN 1
CONN 2
CONN 3
CONN 4
CONN 5
CONN 1
CONN 2
CONN 3
CONN 4
CONN 5
CONNECTOR
ON STICK
CONNECTOR
IN CAB
CONNECTOR
TO MACHINE
CONNECTOR IN CAB
CONNECTOR
IN CAB
CONNECTOR
ON STICK
CONNECTORTO DASA UNIT
CONNECTOR TO DASA UNIT
CONNECTOR FROM KEYPADS
COLOR 1
COLOR 2
PRESS
ADJ PRESS
33K
15K
15K
810
810
22K
2.2K
2.2K
BU
WH
GN
YL
BR
RD
GY
OR
PK
PU
BK
YL
PK
GY
PU
OR
BR
PK
PU
WH
BU
RD
RD
BR
RD
WH
RD
BR
WH
RD
POTENTIOMETERS
BU
WH
GN
YL
BR
RD
GY
OR
PK
PU
BK
BU
WH
GN
YL
BR
GN
GY
OR
PK
PU
RD
PU
BU
WH
GY
GN
PU
GY
OR
PU
PK
OR
PU
PK
BU
YL
OR
BR
PK
BR
YL
GN
WH
OR
BU
GN
OR
BU
GN
CONN 7
CONN 8
CONN 9
4
5
2
3
4
5
2
3
RIGHT DIAMETER SENSOR
LEFT DIAMETER SENSOR
CONN 7
CONN 8
CONN 9
4
5
2
3
4
5
2
3
RIGHT DIAMETER SENSOR
LEFT DIAMETER SENSOR
CONN 6
CONN 6
3
2
4
5
3
2
4
5
STUMP COATING
PUMP SOLENOID
27
26
4
COLOR 2
SOLENOID
COLOR 1
SOLENOID
STUMP COATING
PUMP SOLENOID
27
26
4
G
G
G
G
G
G
DK PRESS
REV/FOR
REV/FOR
RETURN
HA PRESS
CLOSE
OPEN
OPEN
CLOSE
DOWN
UP
CLOSE
CLOSE
CUT
OPEN
OPEN
+24 VDC
+24 VDC
DK PRESS
REV/FOR
REV/FOR
RETURN
HA PRESS
CLOSE
OPEN
OPEN
CLOSE
DOWN
UP
CLOSE
CUT
OPEN
+24 VDC
+24 VDC
HARD
WOOD
FRA=HH45
HA=HH55-75
START
DASA INTERFACE BOX
HA/DK OPEN
COLOR 1
HA OPEN
COLOR 2
PAUSE
+VDCT
OKEYP
ADS
HIGH PRESS FRA/HA*
SA
W
CUT
HA OPEN
PULSEOPEN DK&HA
GRAPPLE OPEN (OPTIONAL)
+12VDC OUTPUT
GROUND
STEER LEFT
STEER RIGHT
GRAPPLE CLOSE (OPTIONAL)
REF. VDC PO
TENTIOMETERS
FR/HA PO
TENTIOMETERS
DK POTENTIOMETERS
GROUND
EXTRA
GROUND
EXTRA
GROUND
GR
OUND
GROUND
GROUND
10A PO
WER3OUT SENSORS
10A POWER2IN
3A POWER2IN
3A POWER3OUT
LENGTH PULSE 2
LENGTH PULSE 1
STEER LEFT
DIAMETER PULSE 2
DIAMETER PULSE 1
STEER RIGHT
SP
ARE DIGIT
AL OUTPUT
SAW POSITION SENSOR
SPARE DIGIT
AL OUTPUT
SAW HOME SENSOR
N/A PHO
TOCELL
DK ADJPRESSURE
POWER1(10A FUSE)
POWER1(10A FUSE)
HA/FRA* ADJ PRESSURE
POWER1
HA PRESSURE
FEED
FOR/RE
V
HA BYP
ASS RELIEF
VALV
E
HA CLOSE
STUMP CO
ATINGSYSTEM
SAW CUT
HA OPEN
PUMPSIGNAL
Descriptions:
HA = HOLDING ARM
FRA = FEED ROLLER ARM
DK = DELIMBING KNIFE
* FRA ON HH45
* HA ON HH55/HH65/HH75
BK
BK
PUMP
GRAPPLE CLOSE
GRAPPLE OPEN
3A POWER
10A POWER
GROUND
OFF-ROAD STEERING RH
OFF-ROAD STEERING LH
15K RESISTOR
GRAPPLE OPEN (OPTIONAL)
30K RESISTOR
63K RESISTOR
e96500
11
11
11
11
11
11
11
11
11
11
16
17
14 12 13
E58105
3 4 5 6 7 8 9 10
1 2
15
JHGF
A B C D E
11
E58104
HH45, HH55, and HH65
Solenoid Valves
HH75 Solenoid Valves
11
1
2
3
3
4
4
5
5
6
6
8
8
9
9
10
11
1
2
7
7
Item No. Component
Location
HH45/58/65
Location
HH75
Item Connector
Schematic
Location
1 Adjustable Pressure DK Cylinder Prop Sol A1 D1 A Conn 1 Al
2 Adjustthle Pressure HA/FR Prop Sol * A1 D1 B Conn 2 Al
3 Left Feed Roller Motor Prop Sol B1 F1 C Conn 3 B1
4 Right Feed Roller Motor Prop Sol B1 F1 D Conn 4 Cl
5 Cutting System On/Off Solenoid C1 F1 E Conn 5 Cl
6 Delimbing Knife Cylinders On/Off Solenoid C1 E1 F Conn 6 D2
7 Feed Roller Arm Cylinder On/Off Solenoid D1 E1 G Conn 7 E3
8 Holding Arm Cylinder On/Off Solenoid E1 E1 H Conn 8* F2
9 Tilt Cylinders On/Off Solenoid E1 E1 J Conn 9* G2
10 Measuring Arm Cylinder On/Off ** F1 D1
11 Holding Arm Open On/Off Solenoid B1 D1
12 Saw Bar Home Sensor A2 D3
13 Saw Bar Position Sensor A2 D2
14 Length Sensor A2 D2
15 Cross Calibration Box** A2 D2 LED No. Function Displayed
16 Left Diometer Sensor A3 D3 LED 1 Pulse 1 to DASA
17 Right Diameter Sensor*** A3 D3 LED 2 Pulse 2 to DASA
LED 3 +24 VDC
LED 4 Pulse 2 from Right Diameter Sensor
LED 5 Pulse 1 from Right Diameter Sensor
LED 6 Pulse 2 from Left Diameter Sensor
LED 7 Pulse 1 from Left Diameter Sensor
Chart B
Harvester Head Electrical System Connector Location
* Used only on HH65 and HH75 (Optional on HH55)
Chart C
Cross Calibration Box LED Function *
* Used only on HH65 and HH75 (Optional on HH55).
Chart A
Harvester Head Electrical System Component Locations
* Solenoid adjusts the pressure of the feed roller arm on the tree
for the HH45 Solenoid adjusts the pressure of the holding arm
on the tree for the HH55 HH65.
**Solenoid controls the movement of the measuring arm for the
HH75 only. HH45, HH55, HH65 use a pressure reducing valve.
*** Used only on HH65 and HH75 (Optional on HH55).
