/sbin/apcupsd

$ whereis apcupsd

apcupsd: /sbin/apcupsd /etc/apcupsd /etc/apcupsd.conf /etc/apcupsd.status /usr/man/man8/apcupsd.8.gz /usr/man/man8/apcupsd.8

If you find an apcupsd in /usr/sbin, /usr/local/sbin, /usr/lib, or another such directory, it is probably a piece of an old version of apcupsd that you can delete. If you are in doubt, delete it, then rerun the make install to ensure that you haven’t deleted anything needed by the new apcupsd. Please note that the files specified above assume the default installation locations.

As a final check that the make install went well, you should check your halt script (in /etc/rc.d on SUSE systems, and in /etc/rc.d/init.d on Red Hat systems) to see that the appropriate lines have been inserted in the correct place. Modification of the halt script is important so that at the end of the shutdown procedure, apcupsd will be called again to command the UPS to turn off the power. This should only be done in a power failure situation as indicated by the presence of the /etc/powerfail file, and is necessary if you want your machine to automatically be restarted when the power returns. On a Red Hat system, the lines containing the # ***apcupsd*** should be inserted just before the final halt command:

# Remount read only anything that’s left mounted.

 

#echo "Remounting remaining filesystems (if any) readonly"

 

mount

awk ’/ext2/ { print $3 }’ while read line; do

 

mount -n -o ro,remount $line

 

done

 

 

# See if this is a powerfail situation.

# ***apcupsd***

if [ -f

/etc/apcupsd/powerfail ]; then

# ***apcupsd***

echo

 

# ***apcupsd***

echo

"APCUPSD will now power off the UPS"

# ***apcupsd***

echo

 

# ***apcupsd***

/etc/apcupsd/apccontrol killpower

# ***apcupsd***

echo

 

# ***apcupsd***

echo

"Please ensure that the UPS has powered off before rebooting" # ***apcupsd***

echo

"Otherwise, the UPS may cut the power during the reboot!!!"

# ***apcupsd***

echo

 

# ***apcupsd***

fi

 

# ***apcupsd***

#Now halt or reboot. echo "$message"

if [ -f /fastboot ]; then

echo "On the next boot fsck will be skipped." elif [ -f /forcefsck ]; then

echo "On the next boot fsck will be forced." fi

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APC UPS control system manual Sbin/apcupsd $ whereis apcupsd

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.