Ieee C37.94 Fail; Psl Editor Troubleshooting; Diagram Reconstruction; Psl Version Check - GE P4A Technical Manual

Chapter 21 - Maintenance and Troubleshooting
3.7.6

IEEE C37.94 FAIL

This indicates a Signal Lost, a Path Yellow (indicating a fault on the communications channel) or a mismatch in the
number of N*64 channels used on either channel 1 or channel 2. Further information can be found in the
MEASUREMENTS 4 column.
3.8

PSL EDITOR TROUBLESHOOTING

A failure to open a connection could be due to one or more of the following:
The IED address is not valid (this address is always 1 for the front port)
●
● Password in not valid
Communication set-up (COM port, Baud rate, or Framing) is not correct
●
Transaction values are not suitable for the IED or the type of connection
●
● The connection cable is not wired correctly or broken
The option switches on any protocol converter used may be incorrectly set
●
3.8.1

DIAGRAM RECONSTRUCTION

Although a scheme can be extracted from an IED, a facility is provided to recover a scheme if the original file is
unobtainable.
A recovered scheme is logically correct but much of the original graphical information is lost. Many signals are
drawn in a vertical line down the left side of the canvas. Links are drawn orthogonally using the shortest path from
A to B. Any annotation added to the original diagram such as titles and notes are lost.
Sometimes a gate type does not appear as expected. For example, a single-input AND gate in the original scheme
appears as an OR gate when uploaded. Programmable gates with an inputs-to-trigger value of 1 also appear as
OR gates
3.8.2

PSL VERSION CHECK

The PSL is saved with a version reference, time stamp and CRC check (Cyclic Redundancy Check). This gives a
visual check whether the default PSL is in place or whether a new application has been downloaded.
3.9

REPAIR AND MODIFICATION PROCEDURE

Please follow these steps to return an Automation product to us:
1. Get the Repair and Modification Return Authorization (RMA) form
An electronic version of the RMA form is available from the following web page:
www.gegridsolutions.com/contact
2. Fill in the RMA form
Fill in only the white part of the form.
Please ensure that all fields marked (M) are completed such as:
○ Equipment model
Model No. and Serial No.
○
○ Description of failure or modification required (please be specific)
Value for customs (in case the product requires export)
○
Delivery and invoice addresses
○
○ Contact details
3. Send the RMA form to your local contact
For a list of local service contacts worldwide,visit the following web page:
www.gegridsolutions.com/contact
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P54A/B/C/E
P54xMED-TM-EN-1