Hitachi SJ300 Series A006, A005, [AT], A006, A005, [AT], Reverse avail, Command Input, Command Input, Reverse avail, Command Input, Command Input, Trim Frequency, Trim Frequency

4–60

Analog Input Operation

Operations and Monitoring

The following tables show the available analog input settings. Parameters A006, A005, and input terminal [AT] determine the External Frequency Command input terminals that are available and how they function. The Trim Frequency input [O2]—[L] is available (when check marked) for some settings. Other settings make the reverse direction (in addition to forward) available for bipolar input settings (when check marked). A bipolar input responds to positive input voltages with a forward motor rotation, and to negative input voltages with reverse motor rotation.

A006	A005	[AT]	ExternalFrequency	Trim Frequency	Reverse avail.
			Command Input	Command Input	(bipolar input)
00	00	OFF	[O]	✘	✘
OR
		ON	[OI]	✘	✘
03
	01	OFF	[O]	✘	✘
		ON	[O2]	✘	✔
01	00	OFF	[O]	[O2]	✘
	Example
		ON	[OI]	[O2]	✘
	1
	01	OFF	[O]	[O2]	✘
		ON	[O2]	✘	✔
02	00	OFF	[O]	[O2]	✔
	Example
		ON	[OI]	[O2]	✔
	2
	01	OFF	[O]	[O2]	✔
		ON	[O2	✘	✔

The table below applies when the [AT] input function is not assigned to any intelligent input terminal. The A005 setting, normally used in conjunction with an [AT] input, is ignored.

A006	A005	[AT]	External Frequency	Trim Frequency	Reverse avail.
			Command Input	Command Input	(bipolar input)
00	—		[O2]	✘	✔
01	—	(not	Summation of	[O2]	✘
			[O] and [OI]
		assigned
02	—	to any	Summation of	[O2]	✔
		input
			[O] and [OI]
		terminal)
03	—		Summation of	✘	✘
			[O] and [OI]

CAUTION: Whenever the [AT] input function is not assigned to any input terminal and reverse rotation is not desired or is unsafe, be sure to set A006 = 01. This setting makes the [O2] input unipolar only.