2N2222NPN Vvvv 2OnBatt | APC UPS control system instruction

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From Jan Babinski jbabinsk at pulsarbeacon dot com: (many thanks)

The BackUPS XS1000(BX-1000) ships with the 940-0127B usb cable and the optional 940-0128D serial cable. I’m trying to get it running under OpenBSD so usb is out of the question. I’ve tried smart serial with the custom cable, but that’s not working, so I’m stuck with dumb serial over 940-0128D.

I have noticed that this cable is not supported by apcupsd so I set out to ﬁnd out how much diﬀerent this cable is compared with the supported ones. After tearing the cable apart (see schematic below) I noticed that it is functionally similar to the 940-0128A cable except for NC on (6) DTR and

(2) RD on the computer side.

Cable 940-0128D

DB9(Computer)				RJ45-10(UPS)
(5)	(1)			____________
( o o o o o )				[ oooooooooo ]
\ o o o o /				[____________]
(9)	(6)			(10)	[_] (1)
RI(9)<	---+

CTS(8)<---	+---	E	2N2222(NPN)
		\___
	____ / B
		C

	+---	vvvv	---+--	[>------	<(2)OnBatt
RTS(7)>---		2k		1N5819
	+---	vvvv	---+--	[>------	<(3)LowBatt

	+---	C
		\___
		/ B
DCD(1)<-------		E	2N2222(NPN)
DTR(4)>--------------------------					>(8)KillPwr
GND(5)----------------------------					(7)Signal GND

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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.

APC UPS control system manual 2N2222NPN Vvvv 2OnBatt

Models: UPS control system

2N2222(NPN)

vvvv

<(2)OnBatt

UPS control system specifications