Emerson PACSystems RSTi-EP User Manual page 425

User Manual
GFK-2958J
Status LED
EP-3804
EP-3704
Channel LED
1.1-4.1
Analog output modules
Status LED
EP-4164
EP-4264
Channel LED
1.1-4.1
Power modules
EP-7631 Status LED
3.2
3.4
EP-7641 Status LED
LED Indicators and Troubleshooting
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
—
Status LED off and all other LEDs red: Error in
the bus network adapter power supply
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)
Red:
Error in supply voltage
—
Communication error
—
Channel error
—
Status LED off and all other LEDs red: Error in
the bus network adapter power supply
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)
Red:
– Channel error or communication error on the
system bus, or there is an error in the supply
voltage
Red:
Supply voltage of the feed in plug < 18Vdc
Red:
Damage of internal fuse
Red:
Check that the module has been
—
snapped into place properly
Check the supply voltage
—
Check channel error
—
Check firmware, update firmware
—
as necessary
Check the bus network adapter
—
supply voltage
Check the input signal, the
—
cabling and, if necessary, the
sensor for external cold-junction
compensation.
Check the bus network adapter
—
supply voltage
Check that the module has been
—
snapped into place properly
Check the supply voltage
—
Check the channel error
—
– Check the bus network adapter
—
supply voltage
Check the connected load, check
—
the cabling,
Check the bus network adapter
—
supply voltage
Check that the module has been
—
snapped into place properly
Check the channel error, check
—
the supply voltage
Check supply voltage of feed in
—
plug
Replace module
—
Check that the module has been
—
snapped into place properly
Chapter 12
Oct 2019
410