User's Manual

Table Of Contents

A9240-A-004-485 User Manual

3.6 Auxiliary I/O Interface

A9240-A-004-485 RFID reader provides 1 set of auxiliary input and four sets of auxiliary

outputs. All auxiliary I/O are optically isolated. The +V and –V terminal blocks must be

connected to +12V DC and ground in order for the auxiliary I/O to function properly. Other

voltage level should not be used. User sensors, alarms, warning lights, or PLC

(programmable logic controller) can be connected to the A9240-A-004-485 RFID reader to

form a flexible infrastructure.

Optically Isolated Input

The optically isolated input terminals (IN1) are to be connected to external switch only. The

external switches are either open or close. There should not be any voltage or current

draining / supply on these contacts. The reader will sense the states of the external switch

on these input terminals by means of optical coupler. The second set of optically isolated

input terminals (IN2) is reserved for future usage. This auxiliary input should not be used.

Please contact AMIC regarding the usage of input terminals, IN2.

Optically Isolated Output

There are four sets of optically isolated output ports. Each output port consists of two

terminals. Each output port’s terminals are either connected or disconnected through the

internal relay controlled by optical coupler. The electrical characteristics of the relay are

described as follows:

Relay Contact capacity (Resistive load): 3A/125VAC or 3A/30VDC

Relay Contact capacity (Inductive load): 0.3A/125VAC or 0.3A/30VDC

Relay Contact resistance: 100m

Max.

Relay Operation time: 5msec Max.

Relay Release time: 5msec Max.

Max. Relay ON/OFF switching (Mechanically): 300 operation/min

Max. Relay ON/OFF switching (Electrically): 30 operation/min

General specifications

Isolation: 5000 Vrms