Effer DMU 2000 - Page 52

Electronic device DMU2000 - DMU3000 - DMU3000 PLUS
THE POWER OF PERFORMANCE
52
Electronic device DMU2000 - DMU3000 - DMU3000 PLUS
! FAILURE ANALYSIS
If the computer is connected to crane (tools sensor diagnostics DMU hardware) the error
state is displayed:
- “1” appears next to: “second boom angular sensor damaged “
the electric cable connecting the angular sensor to DMU is short circuited: an angular value relating to
sensor of 173 degrees appears.
CHECK
Check the error state disappears on computer when carrying out the electric by-pass on transducer con-
necting cable, as outlined in Chapter 17. According to the type of angle sensor which can be “analog” or
“on-o” the computer screen displays as follows:
- with analog sensor: about –93°
- with “on-o” sensor: “1” appears next to: “second boom above critical angle”
If the error state continues, the angular sensor electric connection is damaged.
SOLUTION
Restore electric connection between DMU and angular sensor.
! FAILURE ANALYSIS
If the computer is connected to crane (tools sensor diagnostics DMU hardware) the error
state is displayed:
- “1” appears next to: “second boom angular sensor damaged “
A sensor angular value of zero appears next to “alpha 2”.
CHECK
Check that the error state disappears on computer when carrying out the electric by-pass on transdu-
cer connecting cable, as outlined in Chapter 17. According to the type of angle sensor which can be
“analog” or “on-o” the computer screen displays as follows:
- with analog sensor: about –93°
- with “on-o” sensor: “1” appears next to: “second boom above critical angle”
If the error state continues, the angular sensor connection is damaged.
SOLUTION
Restore electric connection between DMU and angular sensor.