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 241241 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) 241241241
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
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