Redundant Power Supply System Diagnostic Function - Mitsubishi Electric MELSEC iQ-R Series User Manual

Redundant power supply system diagnostic function

This function diagnoses the redundant power supply system where the power supply module is redundant using the
redundant power supply base unit.
For the redundant power supply system, refer to the following.
 MELSEC iQ-R Module Configuration Manual
Redundant power supply system diagnostics
■Description
When a redundant power supply is configured, this function checks the following. When an error is detected, a self-diagnostic
error occurs. ( Page 106 Self-diagnostic error code of the remote head module (1000H to 3FFFH))
• The input power supply voltage of power supply module 1 and power supply module 2 is not dropped or is not turned off.
• There is no failure in the power supply module 1 or power supply module 2.
■Diagnostics conditions
Diagnostics is performed only when all the following conditions are satisfied.
• A redundant power supply base unit is used.
• "Detect" is set for "Redundant Power Supply System Error" in "Error Detections Setting" of "RAS Setting" in "CPU
Parameter".
Setting method
Error detection of redundant power supply system is set in "Redundant Power Supply System Error". ( Page 79 RAS
Setting)
[CPU Parameter]  [RAS Setting]  [Error Detections Setting]  [Redundant Power Supply System Error]
When "Not Detected" is set for "Redundant Power Supply System Error", the diagnostics of the redundant
power supply system is not performed. Therefore, even if there is an error on one of the power supply
modules when the redundant power supply base unit is used, the error cannot be detected if the other power
supply module is operating normally.
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1 FUNCTIONS
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1.5 RAS Function