Air Products GASGUARD TE10, Installation, Operation And Maintenance Manual, Page: 157 / 196

Section 9: Troubleshooting
Revision – November 2004 9 - 3
9.1.2 Incorrect Analog Value on Display
Possible Source of
Problem
Test
Solution
No signal, or incorrect
signal from field device
Analog input not scaled
properly
Input circuit fault Verify the field device is
connected to the proper
input receptacle.
Check the field device for
proper operation and
calibration.
Verify the input scaling
range in the controller
configuration.
Check for blown fuse on
input circuit.
Follow “Troubleshooting
Analog Inputs” procedure
to determine location of
fault. Connect field device to
the proper receptacle on
the interface box.
Repair, or replace as
necessary.
Set the scaling values to
the proper range of the
field device.
Replace fuse.
Repair, or replace faulty
component as necessary.
9.1.3 Digital Input Not Working
Possible Source of
Problem
Test
Solution
No signal, or incorrect
signal from field device
Input circuit fault Verify the field device is
connected to the proper
input receptacle.
Check the field device for
proper operation and
calibration.
Check for blown fuse on
input circuit.
Follow “Troubleshooting
Digital Inputs” procedure to
determine location of fault. Connect field device to
the proper receptacle on
the interface box.
Repair, or replace as
necessary.
Replace fuse.
Repair, or replace faulty
component as necessary.