Moog ACV with CANopen bus interface
7 Servo valve functions
Monitoring
B99224-DV018-D-211, Rev. A, October 2018
243
7.15.7 Main/dual stage actual spool position monitoring
Monitoring is only active in case of device state greater 'INIT'. In case of a cable break, the fault code 0x14
(Main stage LVDT cable break) is generated and the device state machine state changes to 'NOT READY'.
7.15.8 Analog input cable break monitoring
Cable break monitoring is available for the analog input signals and for the sensor supply wires. The following
table shows the possible cable break monitoring features. The cable break monitoring depends on the input
type. This dependence is explained in this chapter.
The following fault codes are generated in the case of a cable break. The fault reaction itself can be config-
ured using the fault reaction logic.
Chapter "8.1.3 Fault reaction type", page 271
The servo valve must be serviced by Moog service technicians.
The servo valve may behave unpredictably.
Power supply
cable break
monitoring
Sensor cable break monitoring
0…10 mA
–10…10 mA
4…20 mA
0…10 V
–10…10 V
Analog input 0
No
No
Yes
(fault code 31)
No
Analog input 1
No
No
Yes
(fault code 32)
No
Analog input 2
Yes
(fault code 28)
No
Yes if <AnaInMonitorCurrent2>
(0x3217) is set to 0
(fault code 33)
Yes if <AnaInMonitorCurrent2>
(0x3217) is set to 1
(fault code 33)
Analog input 3
Yes
(fault code 29)
No
Yes if <AnaInMonitorCurrent3>
(0x3228) is set to 0
(fault code 34)
Yes if <AnaInMonitorCurrent3>
(0x3228) is set to 1
(fault code 34)
Analog input 4
Yes
(fault code 30)
No
Yes if <AnaInMonitorCurrent4>
(0x3227) is set to 0
(fault code 35)
Yes if <AnaInMonitorCurrent4>
(0x3227) is set to 1
(fault code 35)
Table 95: Cable break monitoring features
Input
Fault code
Fault description
Dec.
Hex.
Analog input 0
31
0x1F
Analog input 0 current too low (4…20 mA)/ADC overflow (voltage)
Analog input 1
32
0x20
Analog input 1 current too low (4…20 mA)/ADC overflow (voltage)
Analog input 2
33
0x21
Analog input 2 current too low (4…20 mA)/ADC overflow (voltage)
28
0x1C
Analog input 2 supply cable break/short circuit
Analog input 3
34
0x22
Analog input 3 current too low (4…20 mA)/ADC overflow (voltage)
29
0x1D
Analog input 3 supply cable break/short circuit
Analog input 4
35
0x23
Analog input 4 current too low (4…20 mA)/ADC overflow (voltage)
30
0x1E
Analog input 4 supply cable break/short circuit
Table 96: Possible fault codes