Reference Guide

S6500 Long Range Reader Module - Reference Guide May ’01

2.3.2 Supply Connector (X3)

The supply voltage is connected to connector X3 on the lower circuit board.

2.3.3 Isolated Optocoupler Inputs (X7)

The optocoupler inputs on Terminal X7 are galvanically isolated from the reader elec-

tronics and must therefore be powered by a separate external DC supply. For supply

voltages above 10 V, the input current must be limited to a maximum of 20 mA by an

additional external dropping resistor (see section 3.4.3).

Table 4: Supply Connector

Pin Name Description

1 + 24 V Positive supply

2 GND Ground

Table 5: Supply Connector - Specifications

Parameter Minimum Maximum

Logic Supply Voltage VSL 23.75 V 25.2 V

Logic Supply current ISL - 2.5 A

Connecting Cable Length - 3 m

Ripple (acceptable level) - 20 mV

Table 6: Optocoupler Inputs Connector

Pin Name Description

1 IN1+ + Input 1

2 IN1- - Input 1

3 IN2+ + Input 2

4 IN2- - Input 2

Table 7: Optocoupler Inputs Connector - Specifications

Parameter Minimum Maximum

External Supply Voltage 5 VDC 24 VDC

External Supply Current - 20 mA