3.7 Information about the Other Physical Cards

External Sensor

Power to the external sensor is provided from the EIO4 card and must be grounded through the EIO4 card as indicated in the diagram below. A pair of "sensor" and "common" lines are connected to the EIO4 card for each external sensor. The PBX detects input from the sensor when the signal is under 100 .

Connection Diagram

PBX

OPB3

EIO4 +5V

+5V

 

10K

33

 

I/O

33

4.7K

4.7K

 

External Sensor

sensor

common

External Relay

Current Limit: 24 V DC/30 V AC, 1 A maximum

140 Installation Manual

Page 140
Image 140
Panasonic KX-TDE100 installation manual External Sensor, External Relay, Connection Diagram, PBX OPB3