ACC bus interface
The ACC bus interface is a CAN bus interface with an additional hardware synchronisation line used to synchronise the inverter modules with the transfer protocol DS301, version 4.01. The compact power supply can send and receive data via the ACC bus interface. The send and receive data is mapped in PDOs. The transfer type is 254: asynchronous PDO, event-guided. The minimum cycle time for cyclical PDO transmission is 10 ms.
The entire CANopen functionality is defined in the device description file KER3_207_0604.eds. EDS files can be downloaded on the AMK website.
The compact power supply is an ACC bus slave participant with the default address 33 (21 hex). Other KE addresses (address "34" ... "39" are permitted) must be preset in encoded form via the DIP switch S1 in the KE front panel. The baud rate is preset at the factory to 1000 kBd (default value). Further information: Siehe 'Changing the default settings'..
ACC bus-specific characteristics
The SBM output indicates the fault-free status of the module after initialisation.
In case of an error in the SBM the System Ready is reset and the main contactor is released.
|
ACC bus interface status |
Other ACC bus subscribers |
KE response |
|---|---|---|
|
KE ACC bus interface enabled |
An ACC bus master + x other slaves available |
SBM is set |
|
KE ACC bus interface enabled |
No ACC bus subscribers |
SBM is set after 15 seconds |
|
KE ACC bus interface disabled (all S1 DIP switches ON) |
|
SBM is set |
|
KE ACC bus interface enabled Configuration ID32795 Source UE = signal via ACC bus (e.g. code 5) |
No ACC bus subscribers |
Set after 15 seconds |
PDO mapping variables
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|
All three transmit variables (iMessage16, diMessage32 and wDeviceState) must be mapped for the compact power supply. It is not permitted to only configure one of the three variables. The PDO is transferred event-guided (transfer type EVENT). The shortest possible cycle time for this message is 10 ms. |
Configurable feedback values
|
API variable name |
CAN index |
CAN sub-index |
Copy |
Use |
|---|---|---|---|---|
|
iMessage16 |
0x2040 |
0x01 |
Tx |
Configurable, cyclical 16-bit feedback value message |
|
diMessage32 |
0x2040 |
0x02 |
Tx |
Configurable, cyclical 32-bit feedback value message |
Status and control variables
|
API variable name |
CAN index |
CAN sub-index [hex] |
Copying direction |
Use |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| wDeviceState |
0x2048 |
0x00 |
Tx |
|
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| wDeviceControl |
0x2049 |
0x00 |
Rx |
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