Digital I/O Module
The main functions of the digital I/O module are as follows:
- 
                  
                  
To monitor binary sensors and switches via four 24 Vdc sink/source inputs
 - 
                  
                  
To control devices like relays, signaling lights, or controller binary inputs via two 0.5 A, 24 Vdc transistor-type outputs
 - 
                  
                  
To capture statistical operational data of the I/O module:
- 
                        
                        
Number of power cycles
 - 
                        
                        
Number of detected events
 - 
                        
                        
Time the module is on
 
 - 
                        
                        
 - 
                  
                  
To perform I/O Channel testing and simulation
 
The reference number is TPRDG4X2.
The digital I/O module is connected:
- 
                  
                  
Upstream to the 24 Vdc source needed to power the downstream actuators
 - 
                  
                  
Input channel: downstream to a binary sensor or switch
 - 
                  
                  
Output channel: downstream to the 24 Vdc input of the actuator
 
Refer to Avatar Wiring Schematics for module wiring.
Devices connected to the digital I/O module must be protected against short-circuits by external means like fuses. Use one 0.5 A Type T fuse per output. Recommended are Littlefuse 215, 218, FLQ, or FLSR series or equivalent.
The digital I/O module communicates with the bus coupler, sending operational data and receiving commands.
Input Specifications
| 
                        
                         Channel  | 
                     
                     
                        
                         Inputs  | 
                     
|---|---|
| 
                        
                         Rated power supply  | 
                     
                     
                        
                         24 Vdc  | 
                     
| 
                        
                         Input type  | 
                     
                     
                        
                         Type 1 (IEC/EN 61131-2)  | 
                     
| 
                        
                         Number of discrete inputs  | 
                     
                     
                        
                         4 isolated with common point  | 
                     
| 
                        
                         Discrete input current  | 
                     
                     
                        
                         7 mA at 24 V  | 
                     
| 
                        
                         Discrete input voltage  | 
                     
                     
                        
                         24 Vdc (voltage limits: 19.2–28.8 V)  | 
                     
| 
                        
                         Cable type  | 
                     
                     
                        
                         Refer to the instruction sheet MFR44099, Analog I/O and Digital I/O Modules , and the section I/O Module Wiring.  | 
                     
| 
                        
                         Cable length, maximum  | 
                     
                     
                        
                         30 m (98 ft)  | 
                     
Output Specifications
| 
                        
                         Channel  | 
                     
                     
                        
                         Inputs  | 
                     
|---|---|
| 
                        
                         Number of discrete outputs  | 
                     
                     
                        
                         2 isolated with common point  | 
                     
| 
                        
                         Discrete output voltage  | 
                     
                     
                        
                         24 Vdc (voltage limits: 19.2–28.8 V)  | 
                     
| 
                        
                         Rated output current  | 
                     
                     
                        
                         0.5 A, resistive  | 
                     
| 
                        
                         Cable type  | 
                     
                     
                        
                         Refer to the instruction sheet MFR44099, Analog I/O and Digital I/O Modules , and the section I/O Module Wiring.  | 
                     
| 
                        
                         Cable length, maximum  | 
                     
                     
                        
                         30 m (98 ft)  |