A&D Weighing Indicator AD-4405 - Manual (Page 72)

Page 70 AD-4405 Weighing Indicator
20. 20. 20. 20. Current Loop Output (OP Current Loop Output (OP Current Loop Output (OP Current Loop Output (OP- - - -08) 08) 08) 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 8 9
Pin connections (DIN 8pin connector)
Function Pin No. Signal name Direction Description
1 HI Output Relay output HI
6 OK Output Relay output OK
4 LO Output Relay output LO
Relay
output
8 COM(out) - Relay common terminal
3 CL1 Output Current loop output 1 Current
loop 5 CL2 Output Current loop output 2
7 EXT3 Input Control input 3 (f15) Control
input 2 COM(in) - Control input common
Adaptable connector JA-TCP0586 (of accessory)
Circuits Circuits Circuits Circuits
Current loop output
HI
OK
LO
COM(out)
K
EXT3
+7 to 9V
680 9
'
COM
(in)
' DIN connector
of OP-08
Control input Relay output
20. Current Loop Output (OP-08)