Wiring panel and terminal functions

The CR300 series wiring panel provides ports and removable Closedterminals Point at which a wire (or wires) connects to a wiring panel or connector. Wires are usually secured in terminals by screw- or lever-and-spring actuated gates with small screw- or spring-loaded clamps. for connecting sensors, power, and communications devices. It is protected against surge, over-voltage, over-current, and reverse power. The wiring panel is the interface to most data logger functions so studying it is a good way to get acquainted with the data logger. Functions of the terminals are broken down into the following categories: ‪

  • Analog input
  • Pulse counting
  • Analog output
  • Communications
  • Digital I/O
  • Power input
  • Power output
  • Power ground
  • Signal ground

 


Analog input terminal functions

SE
DIFF
1   2
1
H   L
3   4
2
H   L
5   6
3
H   L
Single-Ended Voltage
Differential Voltage H L H L H L
Ratiometric/Bridge
Thermocouple
Current Loop        

 

Pulse counting terminal functions

  C1 C2 P_SW P_LL SE1 SE2 SE3 SE4 SE5 SE6
Switch-Closure      
High Frequency    
Low-level AC                  
Quadrature        
Period Average        

 

Analog output terminal functions

  VX1 VX2
Switched Voltage Excitation

 

Voltage output terminal functions

  C1 C2 SE1-4 VX1 VX2 P_SW

SW12V

3.3 VDC      
5 VDC      
BAT +            

 

Communications terminal functions

  C1 C2 SE1-3 RS-232
SDI-12    
RS-232      
RS-232 0-5V    
GPS Time Sync  
GPS NMEA Sentences Rx Rx   Rx

Communications functions also include Ethernet (CR310 only) and USB

 

Digital I/O terminal functions

  C1 C2 P_SW SE1 SE2 SE3 SE4 SE5 SE6
General I/O    
Pulse-Width Modulation Output        
Interrupt