A&D AD-4405 manual Current Loop Output OP-08, CL1, CL2

20. Current Loop Output (OP-08)

Replacing the RS-232C interface with this option, current loop output, 3-relay outputs and 1-control input can be used with the RS-232C interface of this option.

RS-232C functions and pin connections are the same as the RS-232C interface described in “16. RS-232C Interface”.

The control input can control the indicator from an external terminal just like the front panel key operations.

Set the external control function at f15 of the F-Functions.

When connecting the function pin and the common pin, the indicator makes the action. Keep a signal width of more than 100 ms for the On-time and Off-time.

ON(Make)
More than 100 ms	More than 100 ms
OFF(Break)

The relays output the result of comparison.
	Solid-state-relay
	Maximum voltage		DC50V
	Maximum current		DC100mA
	Maximum resistance 89
Pin connections (DIN 8pin connector)
	Function	Pin No.		Signal name	Direction	Description
		1		HI	Output	Relay output HI
	Relay	6		OK	Output	Relay output OK
	output	4		LO	Output	Relay output LO
		8		COM(out)	-	Relay common terminal
	Current	3		CL1	Output	Current loop output 1
	loop	5		CL2	Output	Current loop output 2
	Control	7		EXT3	Input	Control input 3 (f15)
	input	2		COM(in)	-	Control input common
Adaptable connector			JA-TCP0586 (of accessory)

Circuits

Control input			Relay output
+7 to 9V			COM(out)
	EXT3		OK
6809
Current loop output
￿	￿		HI
		COM	LO
￿	￿		DIN connector
		(in) K	of OP-08

20. Current Loop Output (OP-08) Page 70 AD-4405 Weighing Indicator