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SMT3000RM2U how do I connect serial cable to manually power on and off?

APC UPS Data Center & Enterprise Solutions Forum

Schneider Electric support forum for our Data Center and Business Power UPS, UPS Accessories, Software, Services, and associated commercial products designed to share knowledge, installation, and configuration.

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SMT3000RM2U how do I connect serial cable to manually power on and off?

This question was originally posted by Charles on APC forums on 3/22/2017


Hi everyone,

I'm looking to control (if possible) my SMT3000RM2U via the serial cable in terms of turning it on after a power failure and then when the utility power returns, to turn it off.

I found this post by Angela: http://forums.apc.com/spaces/5/smart-ups-symmetra-lx-rm/forums/general/9407/turn-on-surt8000xl-remot...

which details pins 7,8 & 9 as being for this purpose, but the serial port on my SMT3000RM2U is RJ48 so I would like to know how to translate the above 7-8-9 connection to RJ48 connector.

Also- Angela mentions that the connection as a momentary (240ms) connection. What would the UPS do if the connection was constant in one state or the other (like a relay would create)?

Greatly appreciate your time!

Chuck

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BillP
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Re: SMT3000RM2U how do I connect serial cable to manually power on and off?

This reply was originally posted by Matt on APC forums on 8/29/2019


Hi Lilla

 

The cable required is actually a smart signalling cable APC part no. 940-0625A  rather than a generic serial cable.

 

Regards

 

Matt

See Answer In Context

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BillP
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Re: SMT3000RM2U how do I connect serial cable to manually power on and off?

This reply was originally posted by Liam on APC forums on 3/23/2017


Hi Charles - 

Next generation Smart-UPS (anything with an LCD screen) use a different communications protocol and cable pin-out than legacy products. You can get all the details in this application note: http://www.apc.com/salestools/MPAO-9E5RB5/MPAO-9E5RB5_R1_EN.pdf

Hope that helps,

Liam

BillP
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Re: SMT3000RM2U how do I connect serial cable to manually power on and off?

This reply was originally posted by Charles on APC forums on 3/23/2017


Liam- Thank you! Exactly what I was looking for. Good day!

Charles

BillP
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Re: SMT3000RM2U how do I connect serial cable to manually power on and off?

This reply was originally posted by Lilla on APC forums on 8/28/2019


Hi...in my case after replacing the batteries, the unit works fine, except for one thing. Whenever I plug in a Serial Data Cable into the back of the unit, and THEN plug it into a Serial Port, the UPS shuts down, or it simply will not start. With just the cable plugged into the UPS, and the other end unplugged, it runs or starts fine. I even tried a Serial to USB Adapter, and the same thing happens. I just bought a generic Serial Cable, and not this one, since it appears to be just a generic cable.

 

printed circuit board

BillP
Administrator Administrator
Administrator
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746

Re: SMT3000RM2U how do I connect serial cable to manually power on and off?

This reply was originally posted by Matt on APC forums on 8/29/2019


Hi Lilla

 

The cable required is actually a smart signalling cable APC part no. 940-0625A  rather than a generic serial cable.

 

Regards

 

Matt