TECO E510s Series - Page 323

5-4
LED display Description Cause Possible solutions
PID
Feedback
Loss
PID feedback signal falls
below level specified in
10-12 (PID feedback loss
detection level) for the
time specified in 10-13
(Feedback loss detection
time). Active when
parameter (10-11 = 2).
 Feedback signal wire broken
 Feedback sensor broken.
 Check feedback wiring
 Replace feedback sensor.
PO
Voltage Off
STO terminal 1 error
(Without STO/Filter model
only)
Terminal board Input SF1 and SG
are not connected
Check SF1 and SG connection
Safety 1
Error
STO terminal 1 error
(With STO/Filter model
only)
Terminal board Input SF1 and SG
are not connected
Check SF1 and SG connection
Safety 2
Error
STO terminal 2 error
(With STO/Filter model
only)
Terminal board Input SF2 and SG
are not connected
Check SF2 and SG connection
Safety 3
Error
STO terminal 3 error
Transformer voltage output of
inverter is not stable.
 Replace the power board
 Contact with TECO
External
fault 0
External fault (Modbus)
Modbus communication 0x2501 bit
2= "1"
 Reset Modbus
communication 0x2501
bit 2= "1"
External
fault 1
External Fault
(Terminal S1)
External Fault Input Terminal
 Check the fault reason
 Reset external fault of
digital input
External
fault 2
External Fault
(Terminal S2)
External
fault 3
External Fault
(Terminal S3)