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CHAPTER 8 TROUBLESHOOTING
8
8.4 Checks Using Input Signals
8.4.8 When CH Alert occurrence flag (XnC to XnF) is on
8.4.8 When CH Alert occurrence flag (XnC to XnF) is on
Check Item Action
Has the temperature process value (PV) exceeded the alert
set value range?
• Check CH Alert definition (Un\G5 to Un\G8) and take the appropriate
corrective action. ( Page 87, Section 3.4.2 (3))
• Correct the alert set value. ( Page 108, Section 3.4.2 (18))
Has a disconnection been detected?
• Check CH Alert definition (Un\G5 to Un\G8) and take the appropriate
corrective action. ( Page 87, Section 3.4.2 (3))