A&D AD-4405A - Current Loop Output (OP-08)

AD-4405A Weighing Indicator Page 71
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 50VDC
Maximum current 100mA DC
Maximum resistance 8
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 (provided with the OP-08)
Circuits
Current loo
p
out
p
ut
HI
O
K
LO
COM
(
out
)
i
EXT3
～
+7 to 9
V
680
＋
COM
(in)
～
－
DIN connector
of OP-08
Control in
p
ut Rela
y
out
p
ut
20. Current Loop Output (OP-08)