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AF9ZP0BA - EPS-ACW REACH TRUCK - User Manual
Zapi P/N
TCM->EPS
ID.Byte.Bit
EPS_MuC -> TCM
STOP TRACTION REQ
ID.Byte.Bit
EPS_SuC ->TCM
STOP TRACTION REQ
ID.Byte.Bit
Expected Time
repetition: (*)
F07198-ZP 218.X.X
198.0.3
199.0.3
every TCM-> EPS
(T=32msec)
Table 15.1-1
(*) In case the synch PDO TMC->EPS is lacking longer than 100msec, epsacW sends its
response PDOs to the TMC every 100msecs with STOP TRACTION REQ turned TRUE (Alarm
CAN BUS KO).
Together wit the STOP TRACTION REQUEST the epsacW sends also an
EMERGENCY or a PDO with the indication of the alarm code.
BUT THIS IS ONLY
an information aside; it is mandatory that the traction shall be stopped
following the event STOP TRACTION REQUEST turned TRUE.
15.2 EPSACW ALARMS LIST
Below the alarms list for the epsacW is supplied.
Listed Alarms are organized in fours groups:
Group #0:
steering motor is immediately shut off (null holding torque).
Group #1:
steering motor is supplied with a DC current (ID RMS MAX) 5 sec long.
Group #2:
steering motor is braked to a null speed 5sec long.
Group #3:
steering motor is kept in full control 5sec long.
In case an alarm occurs, we assume the truck gets stopped within 5secs and so,
when possible, we keep the steering system operative up to 5secs (traction is
immediately DEMANDED TO STOP instead).
In the list below:
Node #18 (CAN Consolle) and #6 (remote Zapi hand-set) is the Master
Microcontroller (MuC)
Node #19 (CAN Consolle) and #38 (remote Zapi hand set) is the Slave
Microcontroller (supervisor-SuC).
Letteres inside square brackets refers to the Master and Slave nodes.
Master microcontroller and Slave microcontroller reply the same tests on the
system for mostly of the alarms below; when the alarm is raised by only one of
them, only one Node is listed in square brackets.
There are two alarm codes: hexadecimal and decimal. The decimal number is sent
on the Can bus and collected by the display. Hexadecimal is the Can Open Alarm
Code (not active).
1) FB SENSOR LOCKED
Alarm 0xFFF1=241 Group #2 [M,S]:
- Cause:
This is a closed loop monitoring. This alarm occurs if the actual
speed (freq_enci in Figure #7.1-1 measured with the main
encoder) does not pursuit the commanded speed (set point)
(freq_req in Figure #7.1-1 coming from a pre-elaboration of the
stepper motor outputs) longer than 500msec @ traction speed
higher than 15% (at lower traction speed, time delay increases
up to 2.5secs when traction speed is lower than 5%). If the
displacement between commanded and actual speed stays
higher than 30% of the commanded speed and higher than