Appendix B: NT5C10CO shelf 111

The above settings will provide a delay of approximately 24 hours, which is sufficient to charge the batteries with a reserve of 80 to 120AH and at the same time supply power to a 10 A load. When the load is 6 A, or less on a battery reserve of less than 80AH, open SW1-4 and close SW1-3 for a delay of 12 hours.

Troubleshooting

The following are recommended steps for analyzing possible malfunctions of a system equipped with an NT5C10CO power shelf. This is in addition to the information contained in the “Troubleshooting” section of User Manual (UM) 167-9021-107.

Table 13 - Systems equipped with NT5C10CO power shelf fault diagnosis

Fault symptom

Possible causes

 

 

 

Delayed Start did not

No ACV at the power shelf input terminals.

activate (delayed start

 

LED is not lit):

Main rectifier has been removed or generates an RFA.

 

Faulty circuit pack.

 

 

 

Incorrect time delay:

Verify that the SW1 switch is properly set.

 

Faulty circuit pack.

 

 

 

 

 

—end—

 

 

 

25A Switch Mode RectifierNT5C06B / C Installation and User Manual

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Emerson MPR25, MPR15 Series user manual Troubleshooting, Systems equipped with NT5C10CO power shelf fault diagnosis

MPR15 Series, MPR25 specifications

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