Omron SmartSlice GRT1-OD4G-1 Operation Manual page 305

LED Indicators and Error Processing
Unit LED
name
Slice I/O Units TS
Slice I/O Unit ERR0
(GRT1-TS2@)
Color Status
Green Slice I/O Unit operating nor-
TS
mally.
--- Unit power supply is not being
TS
supplied to the Unit.
Red Unit hardware failure
TS
Communications error
occurred.
TS
Error in switch settings.
Cold junction compensator
error occurred.
Green Restore operation in progress Wait until the restore operation is com-
TS
Backup operation in progress Wait until the backup operation is com-
Red Input error occurred in input 0. Check the following items.
Cold junction compensator
error occurred.
--- There is no input error for
input 0. (Not lit when input
error detection is disabled
using the input error detec-
tion disable setting.)
Meaning
---
Check whether power is being supplied by
the Unit power supply.
Turn the power OFF and then ON again.
Replace the Unit if the error recurs.
• Check whether the connector on the Turn-
back Cable is inserted properly.
• Check the location of the Cable to see if
the Turnback Cables and I/O lines are not
wired too near the power lines.
Check to be sure that the switch settings
are not set to an invalid setting (GRT1-AD2,
GRT1-DA2@, GRT1-TS2P, GRT1-TS2PK).
Check the cold junction compensation (on
the GRT1-TS2T only).
pleted.
pleted.
• Check if the sensor is disconnected, never
was connected, short-circuited, or wired
incorrectly.
• Check the terminal block to see if it is dis-
connected.
• If using a 2-wire connection, check to be
sure the SHT terminals are shorted.
• Check the sensor to see if it is of the cor-
rect input type.
• Check to see if the temperature is outside
the convertible temperature range.
Check the cold junction compensation
(GRT1-TS2T only.)
Section 9-2
Likely cause of error
285