Tripp Lite SU20KX Output Dry Contact Circuit Diagram, 11-10 RS-232 Serial Port Circuit Diagram

111 – Communications (continued)

	11-9 Output Dry Contact Circuit Diagram
2	The UPS system has six dry contact output connections. These
	contacts can be normally open or normally closed. Contacts are rated
	for 250V AC/28V DC; 8A.
3
4		OUTPUT
5
		DRY CONTACT
6
7
8
9
	11-10 RS-232 Serial Port Circuit Diagram
	The RS-232 DB9 serial port connects the UPS system to a workstation
10	or server (cable included). By communicating with the UPS system
	through this port, Tripp Lite’s PowerAlert UPS management software
	(included) can monitor and control the UPS system. PowerAlert also
	serves as an SNMP proxy allowing the UPS system to appear as an
	SNMP-manageable device on the network.
11	RS-232 signals and operations include: load level, battery status, battery
	level, operation mode, AC input voltage, AC output voltage, AC input
	frequency, internal temperature, set shut-down delay time, enable/
	disable alarm and remote shutdown.
12	Hardware	Pin Assignment
	Baud Rate: 2400 BPS	Pin 2: TXD (Transmit Data)
	Data Length: 8 bits	Pin 3: RXD (Receive Data)
	Stop Bit: 1 bit	Pin 5: GND (Signal Ground)
13	Parity: NONE
	11-11 Parallel Configuration Port
	The parallel configuration port allows the UPS system to be connected to another UPS system of identical type and capacity for use in a parallel
	(1+1) configuration for increased capacity or increased fault-tolerance. Warning: Use only the parallel configuration cable that is included
14	with the UPS system. Attempting to use an incompatible cable may damage the UPS systems and create a serious risk of personal injury
	and property damage.

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