A&D Weighing Indicator AD-4407 Spécifications télécharger pdf (Page 61)

AD-4407 Weighing Indicator Page 59

17.

17.17.

17.

Current Loop Output (OP

Current Loop Output (OPCurrent 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 are the same as the RS-232C interface described in “13. RS-232C

Interface”.

The solid state relays output the result of comparison.

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 100ms for the On-time and Off-time.

ON(Make)

OFF(Break)

Pin connections and Circuits

Pin connections and CircuitsPin connections and Circuits

Pin connections and Circuits

Function Pin No. Signal name Direction Description

1 TXD Output Transmit data

2 RXD Input Received data

3 DSR Output Data set ready

RS-232C

4 SG - Signal ground

5 HI Output Relay output HI

6 OK Output Relay output OK

7 LO Output Relay output LO

Relay

output

8 COM(out) - Relay output common

9 CL1 Output Current loop output 1 Current

loop

10 CL2 Output Current loop output 2

11 EXT3 Input Control input 3 (F15) Control

input

12 COM(in) - Control input common

FG 13 FG - Frame ground (case)

17. Current Loop Output (OP-08)

Current loop

output









        







Relay output RS-232C



        

  

   

Control

input

Case













Current

loop

Relay specifications

Maximum voltage

DC50V

Maximum current

DC100mA

Maximum resistance

More than 100ms

1 2 ... 56 57 58 59 60 61 62 63 64 65 66

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