diagram are used to keep PowerChute happy by allowing cable detection. If you use the NUT apcsmart driver, those pins don’t matter.

Many thanks to Steve Draper for providing this scan.

For additional information on cables, see the section on custom cables (see Cables) in this manual.

The Smart Protocol

Despite the lack of official information from APC, this table has been con- structed. It’s standard RS-232 serial communications at 2400 bps/8N1. Don’t rush the UPS while transmitting or it may stop talking to you. This isn’t a problem with the normal single character queries, but it really does matter for multi-char things like “@000”. Sprinkle a few calls to usleep() in your code and everything will work a lot better.

The following table describes the single character Code or command that you can send to the UPS, its meaning, and what sort of response the UPS will provide. Typically, the response shown below is followed by a newline (\n in C) and a carriage return (\r in C). If you send the UPS a command that it does not recognize or that is not available on your UPS, it will normally respond by “NA” for not available, otherwise the response is given in the “Typical results” column. >

Code

Meaning

Typical results

ˆA

Model string

SMART-UPS 700

ˆN

Turn on UPS (send twice, with

n/a

 

> 1.5s delay between chars) Only

 

 

on 3rd gen SmartUPS and Black

 

 

Back-UPS Pros

 

ˆZ

Permitted EEPROM Values

A large string (254 chars) that

 

 

gives the EEPROM permitted val-

 

 

ues for your model. For details see

 

 

below.

A

Front panel test

Light show + “OK” (and 2s beep)

B

Battery voltage

Ranges - typical “27.87”

C

Internal temperature (degrees C)

Ranges - typical “036.0”

D

Runtime calibration - runs until

! when on battery, $ on line

 

battery is below 25% (35% for

 

 

Matrix) This updates the ’j’ val-

 

 

ues - only works at 100% battery

 

 

charge. Can be aborted with a sec-

 

 

ond “D”

 

188

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APC UPS control system manual Smart Protocol, Smart-Ups, Below
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UPS control system specifications

APC UPS (Uninterruptible Power Supply) control systems are vital components for ensuring uninterrupted power supply and protecting critical equipment from power interruptions, surges, or fluctuations. Designed by Schneider Electric, APC UPS systems are renowned for their high quality and reliability. They utilize advanced technologies and features to suit diverse applications, from home offices to large industrial settings.

One of the main features of APC UPS systems is the ability to provide backup power during outages. This is achieved through a battery system that activates immediately when the mains power fails. This seamless transition minimizes downtime and ensures that electronic devices continue to operate, protecting data integrity and equipment lifespan.

Another significant characteristic of APC UPS systems is their intelligent management capabilities. Most models come with PowerChute software, which provides users with real-time monitoring of power conditions and the status of the UPS. This software allows for graceful shutdowns of connected devices during extended outages, thereby preventing data loss and damage to devices.

APC UPS systems also incorporate advanced technologies such as Automatic Voltage Regulation (AVR). AVR technology ensures that the output voltage remains stable by correcting minor fluctuations without switching to battery mode. This not only prolongs the battery life but also provides a consistent power supply to the connected equipment.

Thermal management is another critical aspect of APC UPS control systems. The design often includes efficient cooling systems that prevent overheating, ensuring optimal performance and longevity of the unit. Some models feature EcoMode, which reduces energy consumption and lowers operational costs by working at high efficiency only when battery backup is not required.

APC UPS systems are designed with scalability in mind. Users can easily add more batteries or connect additional UPS units to accommodate growing power needs. Features such as hot-swappable batteries and modular design facilitate easy upgrades and servicing without interrupting power supply.

In terms of connectivity, APC UPS products often feature multiple options including USB, RS-232, and network management capabilities. This enables users to connect remote management tools and integrate the UPS with existing IT infrastructure.

In summary, APC UPS control systems deliver reliability, efficiency, and advanced technology features that cater to a wide array of power protection needs, making them a trusted choice for individuals and businesses alike.
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