User manual

13 LEDindicatorsandtroubleshooting| I/O modules
478 1432790000/08/12.2015Manual u-remote
13.2 I/O modules
Module LED Status Recommended action
Digital input modules
UR20-4DI-P, UR20-4DI-P-3W,
UR20-8DI-P-2W, UR20-8DI-P-3W,
UR20-8DI-P-3W-HD,
UR20-16DI-P, UR20-2DI-P-TS,
UR20-4DI-P-TS, UR20-4DI-N,
UR20-8DI-N-3W, UR20-16DI-N
Status LED Red:
– Error in supply voltage at input current path
– Communication error on the system bus
– There is a new diagnostic message
– Check that the module has been snapped into place
properly
– Check the supply voltage
UR20-16DI-P-PLC-INT
UR20-16DI-N-PLC-INT
Status LED Red:
– Error in the supply voltage
– Communication error on the system bus
– There is a new diagnostic message
– Channel error
– Error on the supply voltage of the feed-in plug
– Check that the module has been snapped into place
properly
– Check the supply voltage
– Check channel error
– Check supply voltage of feed-in plug
Status LED off and all other LEDs red:
– Error in the bus coupler power supply – Check the bus coupler supply voltage
Channel LED
4.1
Green:
– Supply voltage feed-in plug >18V DC
4.2 Red:
– Error on the supply voltage of the feed-in plug – Check supply voltage of feed-in plug
UR20-4DI-2W-230V-AC
Status LED Red:
– Error in the supply voltage
– Communication error on the system bus
– There is a new diagnostic message
– Check that the module has been snapped into place
properly
– Check the supply voltage
Channel LED
1.1 ... 4.1
Yellow:
– Input active
Digital output modules
UR20-4DO-P, UR20-4DO-P-2A,
UR20-4DO-PN-2A, UR20-8DO-P,
UR20-8DO-P-2W-HD,
UR20-16DO-P, UR20-4DO-N,
UR20-4DO-N-2A, UR20-8DO-N,
UR20-16DO-N
Status LED Red:
– Error in supply voltage at output current path
– Communication error on the system bus
– There is a new diagnostic message
– At least one output overloaded
– Check that the module has been snapped into place
properly
– Check the supply voltage
– Eliminate the overload/short circuit
UR20-16DO-P-PLC-INT,
UR20-16DO-N-PLC-INT
Status LED Red:
– Error in the supply voltage
– Communication error on the system bus
– There is a new diagnostic message
– Channel error
– Error on the supply voltage of the feed-in plug
– Check that the module has been snapped into place
properly
– Check the supply voltage
– Check channel error
– Check supply voltage of feed-in plug
Status LED off and all other LEDs red:
– Error in the bus coupler power supply – Check the bus coupler supply voltage
Channel LED
4.1
Green:
– Supply voltage feed-in plug >18V DC
4.2 Red:
– Error on the supply voltage of the feed-in plug – Check supply voltage of feed-in plug