4-20 Ma Input Connections; Figure 3. Input Connections With Backlight; Figure 4. Input Connections Without Backlight - FlowLine DataLoop LI25 Series Instruction Manual

DataLoop™ LI25 Level Controller

4-20 MA INPUT CONNECTIONS

Input connections are made to a four-terminal connector labeled S+|S-|B+|B-.
The loop-powered backlight is an optional configuration and requires a total
maximum voltage drop of 5.7 V. The backlight is recommended for dim lighting
conditions and is enabled when wired as shown in Figure 3. It may be
bypassed if installed in bright lighting conditions to reduce the maximum
voltage drop to 2.0 V as shown in Figure 4.
Power
Supply

Figure 3. Input Connections with Backlight

Power
Supply

Figure 4. Input Connections without Backlight

MN301034 rev D
4-20 mA
Transmitter
4-20 mA
Transmitter
Instruction Manual
S+ S- B+ B-
S+ S- B+ B-
11