BEI Sensors MHK5 Absolute Hollow Shaft Encoder - Manual (Page 57)

Version 07/10 BEI Sensors CANopen Manual serie M 57
6. Troubleshooting
6.1 Power on – Encoder doesn’t respond
Problem:
The bus is active but the installed encoder
transmitted no boot up message.
Possible solution:
- switch of the PLC
- remove the connection cap of the
encoder
- check the turn-switch for the baud rate
- Assemble the connection cap
- power on
6.2 Malfunction of the position value during
transmission
Problem:
During the transmission of the position value
occasional malfunction occurs. The CAN bus can
be temporary in the bus off state also.
Possible solution:
Check, if the last bus node has switched on the
terminal resistor. If the last bus node is an encoder
the terminal resistor is situated in the connection
cap.
6.3 Too much ERROR-Frames
Problem:
The bus load is too high in case of too much error
frames.
Possible solution:
Check if all bus node has the same baud rate. If
one node has another baud rate error frames are
produced automatically.
6.4 Limit switches without function
Problem:
The encoder didn’t transmit the bits for the limit
switches.
Possible solution:
The limit switch functionality has to be activated
once. Please follow the description you can find at
4.5.
6.5 Encoder without connection cap
Notice: The changing of baud rate and node
number are only valid after a new power up, NMT
Reset or the store parameters command.