Danfoss MPCAN User Manual page 14

User Manual
MPCAN Receiver
Troubleshooting
LED Color and frequency
DIAG1 Orange | slow pulses
Orange | double pulses
Orange | triple pulses
Orange | 4 pulses
Green | slow pulses
Green | double pulses
Green | triple pulses
DIAG2 NOT USED
ORDER Green | continuous
RELAY Green | continuous
CANERR Red | slow pulses
Red | double pulses
Red | 4 pulses
Red | 5 pulses
Red | continuous
CANRUN Green | fast pulses
Green | continuous
14 | © Danfoss | March 2022
Pulse frequency Description
Low tension in the receivers power supply
Hardware error
Low link quality
Medium link quality
High link quality
NOT USED NOT USED
LED ON Whenever any output is ON
STOP relay activated
CAN Error, physical Layer
One expansion has Stopped working
A Transmitted CAN frame has been lost
A Received CAN Frame has been lost
CAN Bus OFF
Pre operational Status, Receiver waiting for the
controller.
Receiver connected to the CAN network and
operational
Action
Supply the system with the
correct voltage
Replace receiver
N/A
N/A
N/A
N/A
N/A
N/A
Verify Connections
Verify Expansion boards
N/A
N/A
Verify CAN connections and
Status.
Controller must send the
Operational code to the
Receiver.
N/A
BC292573933619en-000201