Diagnostics
Advanced diagnostics via diagnostics PDO (CAN2_OUT)
9
127
EDBCSXE040 EN 6.0
9.4 Advanced diagnostics via diagnostics PDO (CAN2_OUT)
Via CAN2_OUT a diagnostics process data telegram (PDO) with display values concerning
the mains conditions and the internal state machine can be sent from the power supply
module. The diagnostics PDO consists of 8 bytes which can be assigned with variables.
ƒ The 8 bytes of the PDO are assigned with variables via code C0390/1 ... 8.
ƒ Depending on the byte size of the variables selected, it may happen that the
variables in the last subcodes do not become effective anymore.
ƒ In C0391 the assignment in percent (0 ... 100 %) of the 8 bytes of the PDO is shown.
ƒ For sending the diagnostics PDO the CAN bus has to be in the "Operational" state
and the cycle time for CAN2_OUT > 0 ms (C0356/2) has to be set.
Value
C0390/1 ... 8
Description Size
0 Not assigned 0 bytes
1 Actual value of the input voltage U
L1L2
on
the
supply
side
2 bytes
2 Actual value of the input voltage U
L2L3
on
the
supply
side
2 bytes
3 Counter of the zero crossings per second (frequency measurement of U
L1L2
)
l The zero crossings of the mains input voltage U
L1L2
are counted over the
interval of one second.
l For a 50 Hz mains therefore 100 zero crossings result, for a 60 Hz mains 120
zero crossings.
l If the characteristic of the variables is shown graphically, a saw−tooth profile
develops.
2 bytes
4 Mains synchronisation n−times outside the limits (evaluation of U
sd
and U
sq
)
l For the evaluation of the mains input voltage the voltages L1, L2 and L3 are
transformed from alpha/beta to d/q and are scaled to the r.m.s. value of the
mains input voltage.
l If the mains conditions are stable, the value of U
sd
will set to approx. 350,
and the value of U
sq
to approx. 0.
l If the limit values of U
sd
or U
sq
are exceeded or too low, a counter is
incremented. If the limit values have been exceeded for the fourth time,
mains synchronism is no longer ensured and an LP1 error message is output.
l Range for U
sd
: 300 ... 400
l Range for U
sq
: −50 ... 50
1 byte 1
5 Internal status bits:
l Bit 0 = 1: Mains voltage since switch−on (24 V) not OK.
l Bit 1 = 1: An LP1 error was detected.
l Bit 2: Switching status of the IGBT (0 = "chopping")
l Bit 3 = 1: Saving of parameter set permitted.
l Bit 4 = 1: A warning is active.
l Bit 5 = 1: A message is active.
l Bit 6 = 1: Calculation for mains synchronisation started.
l Bit 7 = 1: Mains synchronisation is active.
1 byte 1
6 Value of the transformed voltage component U
sd
scaled to the r.m.s. value of
the mains input voltage. The value should be approx. 350.
2 bytes
7 Value of the transformed voltage component U
sq
scaled to the r.m.s. value of
the mains input voltage. The value should be approx. 0.
2 bytes
To Next Page
Loading...
Need help?
General
