SEW-Eurodrive DH 41B Series - Page 68

8
Operation
DHF21B/41B controller
Manual – DHE/DHF/DHR21B (standard) and DHE/DHF/DHR41B (advanced)
68
State LED Possible cause Measure
Green Online, operational mode
and connected
• Unit is online.
• A polled I/O connection has been established
(established state).
Flashing red with 1Hz Minor fault or connection
timeout
• Invalid number of process data is set via DIP
switches.
• A correctable fault has occurred.
• Polled I/O connection is in timeout state.
Red Critical error or critical link
failure
• An error that cannot be corrected has occurred.
• BusOff
• DUP-MAC check has detected an error.
LED "L14" (BIO)
LED "L14" (bit-strobe I/O) monitors the bit-strobe I/O connection.
State LED Possible cause Measure
Green, flashing every
125ms
DUP-MAC check Unit is performing DUP-MAC check.
Off Not switched onor offline
but no DUP-MAC check
• Device is switched off.
• Unit is offline.
Flashing green with 1Hz Online and in operational
mode
• Unit is online.
• DUP-MAC check was performed successfully.
• A BIO connection is being established with a
master (configuring state).
• Missing, incorrect or incomplete configuration.
Green Online, operational mode
and connected
• Unit is online.
• A BIO connection has been established (estab-
lished state).
Flashing red with 1Hz Minor fault or connection
timeout
• Invalid number of process data is set via DIP
switches.
• A correctable fault has occurred.
• Bit-strobe I/O connection is in timeout state.
Red Critical error or critical link
failure
• An error that cannot be corrected has occurred.
• BusOff
• DUP-MAC check has detected an error.
LED "L13" (BUS FAULT)
LED "L13" (BUS FAULT) indicates the physical state of the bus node.
Status LED Status Meaning
Off NO ERROR The number of bus errors is within the
normal range (error active state)
22900055/EN – 08/2016