Wiring With An External Power Supply - Leviton EZ-MAX User Manual

Wiring with an External Power Supply

When needed, an external class 2 power supply can be used to supply power to Low
Voltage devices connected to the low voltage inputs. When this is required, wire the
system by following the diagram below.
External
Power +V
Power
Supply
Common
+24VDC typ.
Figure 8: Using an External Power Supply
You must consider the following when using an external power supply:
• Use the external supply for +24V (or other required device) and common to the
• Any return from a device which is connected to a switch input must not exceed
• Connect the common from the external supply to the common of any switch input
• Use the device output (Control Signal) to the "IN" terminal of the respective switch
• Use the "OUT" terminal from the switch input for device feedback, like a low
• WARNING DO NOT connect the +V of the external supply to any of the +24V
Z-Max Advanced Programming & Systems Design Guide
Revision A:11/2005
Optional LED
Device
Control Signal
+24VDC or 0-10VDC
Depends on Device
Optional LED
Device
Control Signal
+24VDC or 0-10VDC
Depends on Device
devices
+24VDC.
input
voltage switch LED
terminals of the relay panel. This will nullify the Class 2 rating of the power run.
OUT
+24
OFF
IN
COM
Cabinet
COM
Common
COM
Terminals
COM
OUT
+24
OFF
IN
rac00-sdg
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