Toshiba 1500 Plus manual RS-232C Serial Communication Interface, UPS Shutdown via RS-232C

TOSHIBA

6.0UPS Control Interface

6.2RS-232C Serial Communication Interface

The available data from the UPS, via RS-232C communication, is shown below:

	Output voltage
	Output current
Operating conditions	Battery voltage
	Input frequency
	Output frequency
	Utility power OK
	Low battery voltage detected
UPS operating status	UPS in BYPASS mode
(described as ‘yes’ or ‘no’)	UPS in NORMAL mode
	Input and output frequency synchronized
	UPS ‘fault’ occurred
	DC bus overcurrent
	DC bus overvoltage
	DC bus undervoltage
'Fault’ details	Input overcurrent
(described as ‘occurred’	Overheat
or ‘not occurred’)	Overload being timed
	Overload (allowable time exceeded)
	Output overvoltage (during NORMAL mode)
	Output undervoltage (during NORMAL mode)

6.2.1UPS Shutdown (via RS-232C)

When the UPS is operating from its internal batteries, a ‘shutdown’ order can be sent to the UPS telling it to turn OFF after a user-specified amount of time. This function can allow you to stop discharging the UPS batteries after an orderly system shutdown has been completed. The UPS can be programmed to turn OFF up to 8 minutes after the ‘shutdown’ command is given. This command can be cancelled before the specified time has elapsed.

6.3Dry Contact Interface

The Dry Contact interface uses pins 16 trough 22. Pins 24 and 25 are used for the shutdown function. The following schematic shows the contact state and pin assignments for each signal output along with the associated DB25 connector pinout.

16	Dry Contact common
17	}Battery Backup	Notes:
18		1) Pin “switches are shown
		in their inactive states
		(ex. if battery voltage is
19	Battery voltage “low”	low then pin 19 will be
		connected to pin 16)
20	UPS “on”
		2) Contacts are rated as
21	Bypass “on”	follows:
		dc: 48V, 0.1A
22	Fault detect signal	ac: 30Vrms (42V-peak)
		0.07A(0.1A-peak)

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