User Guide

Control Block Terminals
18
QGH39563 02/2017
Digital Inputs
Characteristics
The table provides the characteristics of digital inputs of ATV312 and ATV320 devices
Configuration
On both ATV312 and ATV320, a switch is available to configure the digital inputs. With this switch it is
possible to configure the inputs on:
 Source mode, or
 Sink Int mode, or
 Sink Ext mode
The following figure shows the ATV312 SW switch
NOTE: CLI position corresponds to Sink ext mode and SINK corresponds to Sink int on ATV320.
The following figure shows the ATV320 Book SW1 switch
The following figure shows the ATV320 Compact SW1 switch
For more information about wiring of digital inputs according to the mode selected, refer to the ATV320
Installation Manual (
NVE41289 ).
Digital Inputs Characteristics
ATV312 ATV320 ATV312 ATV320
LI1 DI1 Programmable logic inputs
 + 24 V power supply (max. 30 V)
 Impedance 3.5 kΩ
 State 0 if < 5 V, state 1 if > 11 V
(voltage difference between LI- and
CLI)
 Sampling time 4 ms
Programmable digital inputs configurable as sink
or source using SW1 switch
 + 24 Vdc power supply (max. 30 Vdc)
 State 0 if < 5 V, state 1 if > 11 V (in source
mode)
 State 0 if > 19 V, state 1 if < 13 V (in sink
mode)
 Response time 8 ms at stop
LI2 DI2
LI3 DI3
LI4 DI4
LI5 DI5
LI6 DI6