Hitachi L300IP Serial Port Terminals, Terminal, Description, Ratings and Notes

Terminal	Description	Ratings and Notes
Name
AM	Voltage analog output	0 to 10VDC, 2 mA max.
AMI	Current analog output	4-20 mA, nominal load
		impedance 250Ω
L	Common for analog	Sum of OI, O, and H currents
	inputs	(return)
OI	Analog input, current	4 to 19.6 mA range, 20 mA
		nominal
O	Analog input, voltage	0 to 9.6 VDC range, 10VDC
		nominal, 12VDC max., input
		impedance 10 kΩ
H	+10V analog reference	10VDC nominal, 10 mA max.
AL0	Relay common contact	Contacts AL0–AL1, max resistive
		load = 250VAC 2A; 30VDC 8A;
AL1	Relay contact, normally
		max inductive 250VAC, 0.2A;
	closed during RUN	30VDC 0.6A
		Contacts AL0–AL2, max resistive
AL2	Relay contact, normally
		load = 250VAC 1A; 30VDC 1A;
	open during RUN	max inductive = 250VAC, 0.2A;
		30VDC 0.2A
		Both contact pairs, min. loads =
		100VAC 10mA; 5VDC 100mA

Serial Port Terminals

SP SN RP SN

Termination resistor (–)

Termination resistor (+)

Send/receive (–) Negative

Send/receive (+) Positive

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