DS 350 G Boom Control Troubleshooting- TMS/TTS870 / RT865 BXL
031-300-190-039 Rev. B 4/30/99
7
Output for two- way valves:
A pair of two- way valves controls the oil to each tele- cylinder. The relay output K2, K6, K7
operates the pair of two- way valves in automode. The valve need to be de-energized to
operate the particular cylinder. The valves for the sections that are not selected are powered
to prevent movement of the other cylinders.
Mode
Relay K2
[V]
IM 2 way
valves
Relay K6
[V]
CM 2 way
valves
Relay K7
[V]
OM 2 way
valves
A104-X1/54
A104-X1/66
A104-X1/69
Auto IM
0
0
24
1
24
1
Auto CM
24
1
0
0
24
1
Auto OM
24
1
24
1
0
0
Manual IM
0
0 *
0
1 *
0
1 *
Manual CM
0
1 *
0
0 *
0
1 *
Manual OM
0
1 *
0
1 *
0
0 *
Error (Auto)
24
1
24
1
24
1
Neutral (Auto)
24
1
24
1
24
1
Note: * = powered directly from the section selector switch in the cabin.
Relay outputs:
Relay
Fuse
Description
Central Unit
Terminal
Signal
K1
F2
not used
not used
K2
F3
Inner mid two way- valves
A104 - X1/54
+24V
GND
A104 - X1/3
0V
K3
F4
Rod side dump valve
A104 - X1/57
+24V
GND
A104 - X1/3
0V
K4
F5
Tele out of sequence - Warning light in cabin
A104 - X1/61
+24V
GND
A104 - X1/3
0V
K5
F6
Signal from analog output board
A104 - X1/62
0-800mA
K5
Directs the analog signal to the extend valve
A104 - X1/63
0-800mA
K5
Directs the analog signal to the retract valve
A104 - X1/64
0-800mA
K6
F7
Center mid two way- valves
A104 - X1/66
+24V
K6
GND
A104 - X1/3
0V
K7
F8
Outer mid two way- valves
A104 - X1/69
+ 24V
GND
A104 - X1/3
0V
K8
none
Internal LMI use (overload, error)
A104 - X1/44
+ 24V
K9
none
Internal LMI use (A2B)
A104 - X1/46
+ 24V
K10
external
Motion cut (Bosch relay)
A104 - X1/48
+ 24V