Safeguard 400 Power Supply and Voltage Regulators Life Time
Hi,
I have s Safeguard 400 (1.2) working for almost 18 Years ago.
I heard from one ABB Experts that it is Recommended to Replace the Power Modules (PMPDC24), Voltage Regulators (DSSR 122) and Backup Power Supply (SB 171) every 10 Years to Prevent Problems at the Future.
So I Have these Modules at my Stock but I Bought them from more than 15 Years.
So My Question is that Can I Change them Directly at the nearest shutdown or First I need to Check and Test the Modules at the Stock at a Dummy Controller at the Lab for a Period of time before put them in Operation at the Plant?
Thanks a lot
I have s Safeguard 400 (1.2) working for almost 18 Years ago.
I heard from one ABB Experts that it is Recommended to Replace the Power Modules (PMPDC24), Voltage Regulators (DSSR 122) and Backup Power Supply (SB 171) every 10 Years to Prevent Problems at the Future.
So I Have these Modules at my Stock but I Bought them from more than 15 Years.
So My Question is that Can I Change them Directly at the nearest shutdown or First I need to Check and Test the Modules at the Stock at a Dummy Controller at the Lab for a Period of time before put them in Operation at the Plant?
Thanks a lot
Asked 7 months ago
Voted best answer
3
Yes, power supplies are single points of failure that's why is recommended to exchange them. It would make sense to exchange with new ones.
15 years old spares may have capacitors in similar condition as in original parts.
My answer is more practical than professional. Generally is better "don't touch running system" especially regarding 18-years old one.
Luckily you have spare parts, which you can test at dummy system to be sure parts are ready to be exchanged in case.
I have seen many 20 years old Advant systems in operation with original power supplies.
15 years old spares may have capacitors in similar condition as in original parts.
My answer is more practical than professional. Generally is better "don't touch running system" especially regarding 18-years old one.
Luckily you have spare parts, which you can test at dummy system to be sure parts are ready to be exchanged in case.
I have seen many 20 years old Advant systems in operation with original power supplies.
Answered 7 months ago
Answers
0
I have probably seen more Advant controllers at customer sites than any other guy, and I have seen, and have got increased number of failures reported as the supplies are aging.
It's definitely so that preventive maintenance is needed. Voltage ripple increase over time and may affect the whole controller in case the regulator
like DSSR 122 or SR511 are not replaced.
It's a very bad idea to just wait for the shutdown instead of a scheduled preventive maintenance action.
The Safeguard redundant PMSIC 3.24 24/24 and 220/24 Volt are obsolete. ABB can only offer repair. A few 110/24 are still available in stock.
There is a solution available for Safeguard which require re-wireing etc, as the form factor is different, it also lack the 12 Volt which is needed if DSAI160/165 is used.
/ Jan-Erik
It's definitely so that preventive maintenance is needed. Voltage ripple increase over time and may affect the whole controller in case the regulator
like DSSR 122 or SR511 are not replaced.
It's a very bad idea to just wait for the shutdown instead of a scheduled preventive maintenance action.
The Safeguard redundant PMSIC 3.24 24/24 and 220/24 Volt are obsolete. ABB can only offer repair. A few 110/24 are still available in stock.
There is a solution available for Safeguard which require re-wireing etc, as the form factor is different, it also lack the 12 Volt which is needed if DSAI160/165 is used.
/ Jan-Erik
Answered 7 months ago
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