Section 3. Systems Overview Model 8210/8250 Maintenance Manual
Service Display
3-20 Publication: 1146945/001, Revised: 25 Sep 2018
Typical Power Amplifier Status
Status Comments
1 Motor drive, plug, or active
neutral braking
4 Field reversal (transitional)
6 Disable (major fault, such as
severe overvoltage)
10 Regen
11 Regen taper (transitional)
13 No Activity: Main contactor open
because no output requested for
30 seconds or an error occurred.
16 Passive restraint
17 Active restraint while driving
(overspeed)
24 Passive restraint (transitional)
65 Emergency reverse (drive)
74 Emergency reverse (regen)
129 Emergency shutdown while in
drive
144 Emergency shutdown while in
passive restraint
1. The system mode shows details of traction
amplifier activity, including during normal
operation. It is different than, and does not
correspond to, the code from the traction
amplifier Status LED.
2. Throttle requests are not allowed for any
system mode status of 32 and over.
3. Truck is in an emergency shutdown for any
system mode status of 128 and over.
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