Service Manual

TRIFLEX DIAGNOSTIC FAULT CODE QUICK REFERENCE TABLE – Revision B Page 16
Fault
Number
Fault Title
Controller
Affected
Fault Condition/Circuit
Description
Additional Notes
Service Actions
97
48V Bus Undervolt
– S/G
Cutting unit
This fault is reported when the
48 Vdc Bus system voltage is
below 36 Vdc at the
starter/generator. This fault only
reports when the S/G contactor
is closed.
All of the machine’s 48
Vdc devices connect
to the same 48 Vdc
bus. If this is a system
issue, the TEC master
controller will combine
all 4 component 48
Vdc Bus Overvolt
faults into a single 48
Vdc Bus undervolt
fault (Fault 44).
The TEC will disable
the cutting units
(PTO), and the
generator will not
provide voltage.
1) Check to see if a precharge fault
exists because the contactor
won't engage.
2) Test the contactor for proper
function.
3) Inspect the S/G connector.
98
48V Keyswitch
Overvolt – CU1
Cutting unit
This fault is reported when the
48 Vdc low current logic circuit
exceeds 67.5 Vdc at cutting unit
1. This fault will cause the TEC
to disable the motor.
If this is a system
issue, the TEC master
controller will combine
all 4 component 48
Vdc Bus Overvolt
faults into a single 48
Vdc Bus overvolt fault
(Fault 46).
The TEC will disable
the cutting units
(PTO). If the lightning
bolt in the S/G icon is
black, the S/G is
generating.
1) If the other 48 Vdc devices are
reporting this fault, check the
batteries. If the batteries are ok
with the engine off, the
generator is not generating
correctly.
2) Test the generator to see if it is
generating correctly.
3) Ensure all S/G motor-to-
controller connections are
correct and secure.