Emerson Micro Motion 5700 Installation Manual page 33

Installation Manual
MMI-20075112
4.7.3 Wire the Frequency Output or Discrete Output for hazardous
installations
Prerequisites
WARNING
Meter installation and wiring should be performed only by suitably-trained personnel using the appropriate
government and corporate safety standards.
Procedure
Wire to the appropriate output terminal and pins.
Figure 4-11: FO and DO hazardous wiring
A. Frequency Output or Discrete Output
B. Channel C
C. 8-30 VDC (maximum)
D. Load resistor (500 Ω resistance recommended for 24V supply). Use the following equations for other load
resistance values:
• Rmax = [(Vsupply – 6V) / 0.003] – Rbarrier (maximum value of load resistor allowed)
• Rmin = 0 ohms (minimum value of load resistance required)
E. Counter
F. Safety barrier
G. Rbarrier
Related information
Frequency Output high and low voltages for hazardous installations
Installation Manual
Wiring the channels
August 2020
33