GE RSTi-EP - Page 409

Chapter 12 LED Indicators and Troubleshooting
GFK-2958E RSTi-EP User Manual 405
Module
LED
Status
Recommended action
EP-3804, EP-3704
Status
LED
Red:
– Error in supply voltage at input
current path
– Communication error on the
system bus
– There is a new diagnostic
message
– Channel error
– Firmware error
– Check that the module has been snapped
into place properly
– Check the supply voltage
– Check channel error
– Check firmware, update firmware as
necessary
Status LED off and all other LEDs
red: Error in the bus network
adapter power supply
– Check the bus network adapter supply
voltage
Channel
LED
1.1-4.1
Red:
– Input signal outside permissible
range
– Line break
– Cold-junction compensation error
(EP-3804 only)
– System bus cannot be accessed
(for example, caused by
interruption of the bus network
adapter power supply)
– Check the input signal, the cabling and, if
necessary, the sensor for external cold-
junction compensation.
– Check the bus network adapter supply
voltage
Analog output modules
EP-4164, EP-4264
Status
LED
Red:
– Error in supply voltage
– Communication error
– Channel error
– Check that the module has been snapped
into place properly
– Check the supply voltage
– Check the channel error
Status LED off and all other LEDs
red: Error in the bus network
adapter power supply
– Check the bus network adapter supply
voltage
Channel
LED
1.1-4.1
Red:
– Overload in voltage mode
– Broken line in current mode
– System bus cannot be accessed
(for example, caused by
interruption of the bus network
adapter power supply)
– Check the connected load, check the cabling,
– Check the bus network adapter supply
voltage