Emerson FloBoss 107, Инструкция по эксплуатации

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FloBoss 107 Instruction Manual
Revised June-2017 Inputs and Outputs 4-11
INTERNALLY
POWERED
DEVICE
ANALOG
Figure 4-7. Loop Output Power for the I/O Module
4.7 8-Point Analog Input/Digital Input (AI/DI) Module
The 8-point analog input/digital input (AI/DI) module provides eight
user-selectable analog or digital inputs. The Analog inputs (AI) monitor
current loop and voltage input devices. The 12-bit A/D signal input range
is 0 to 100% EU value (where 0% EU is 800 counts and 100% EU is
4000 counts). You configure the analog inputs using ROCLINK 800
software.
The terminal blocks can accommodate size 16 to 24 AWG.
4.7.1 Wiring the 8-Point AI/DI
The terminals for connecting the AI/DI wirings are shown in Figures 4-8
through 4-10 .
The + terminal is the positive signal input and the GND terminal is the
signal common (

). These terminals accept a voltage signal in the 0 to 5
volt range. The GND terminal is internally connected to common so the
analog input channels function as single-ended inputs only. Use the
LOOP terminal to power external devices.
The I/O module only supports 24 volts dc loop output power. The intent
of the loop output power is to power devices (such as Rosemount
transmitters) that require 24 volts dc to ground and then send the FB107 a
4 to 20 mA signal based on pressure, temperature, and level.
Additionally, each AI channel has an installed 250 Ω resistor to
accommodate a 4 to 20 mA signal. If you have a 1–5 V signal or require a