Dräger Regard 3900 - Page 3

,QVWUXFWLRQVIRUXVH_ REGARD
®
3900 
Contents
REGARD
®
3900
Contents
 Safety-related information 
 Conventions in this document
 Meaning of the warning notices  
 Typographical conventions  
 Trademarks 
 Description 
 Feature description  
 Intended use  
 Limitations on use 
 Approvals 
 Components  
 General instructions 
 Display PCB 
 Inhibit switch  
 Contrast settings 
 Input module  
 Input module relay settings 
 Relay module 
 Relay module relay settings  
 Output module  
 Installation & commissioning  
 General instructions 
 Positioning and mounting the control unit 
 REGARD
®
3900 and 3920  
 REGARD
®
3910  
 Cable entry  
 Grounding plate for the cable shielding  
 Power supply  
 AC power supply  
 DC supply voltage  
 AC and DC power supply  
 Installation of the control modules  
 Combining the control modules  
 Numbering the control modules 
 Connecting control modules and display PCB  
 Connecting remote sensor transmitters 
 4–20 mA two-wire transmitter 
 4–20 mA two-wire transmitter with safety barrier  
 4–20 mA three-wire transmitter  
 Connecting other external sources  
 Remote acknowledgement  
 Relay terminals (input and relay modules)  
 Output module terminals  