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Rev. 2.1 7-7-2017
Copyright © 2017 by Cool Air Incorporated. All rights reserved.
4 to 20mA WIRING
Wiring Diagram: LBW-420-LEL with (1) – 24 VDC
Power Supply
For this configuration, with the jumper J3 in the leftmost position
(which connects pins 2 & 3) power for the 4-20 mA circuit is
provided by the LBW-420-LEL. This circuit is shown below. The
power supply must supply all power for the LBW-420-LELplus the
4-20 mA circuit. Refer to the specifications page for the power
requirements for the LBW-420-LEL. The voltage drops across the
detector and the receiver together must not exceed the power supply
voltage. This circuit is shown in figure 1 below:
FIGURE 1
