MPCAN Receiver Faceplates
400-900 MHz and 2.4GHz Faceplates
MPCAN400-900MHz LED troubleshooting
LED
Characteristic
Description
Action
POWER
Green; pulsing
Receiver is starting up
Wait until start-up process is
finished
HARDOK
Green; continuous
Receiver hardware OK
Operate
Red; pulsing
EEPROM error; data corruption; CAN bus error (if CANERR
activates)
Reprogram EEPROM
Red; other
Electronic board hardware breakdown
Replace electronic board
SIGNAL
LED off
No radio signal detected
-
LED on + transmitter switched
off
Radio channel occupied
Change transmitter's frequency
channel
LED on + DATA switched off
Radio channel occupied by non Danfoss system
Change transmitter's frequency
channel
DATA
Green; pulsing
Receiving good frames
OK
ID
LED off + DATA LED on
No valid ID; Danfoss system nearby
If channel not occupied, check
chosen ID in the transmitter or
reset the receiver
LED on + SIGNAL LED on +
DATA LED on
Valid frames received from the transmitter; correct link
OK
RELAY
Green
STOP relay activated
-
ORDER
Green
-
-
CAN_RUN
Green; switched on
Operational state
OK
Green; pulsing
Activating operational state
-
CAN_ERR
Red; switched on
CAN bus error
Check CAN connection
Red; pulsing
No bus connection
Check bus termination
resistance
LED off
Correct communication
OK
User Manual
MPCAN Receiver
Troubleshooting
12 |
©
Danfoss | March 2022
BC292573933619en-000201
