iWorx® PSU1
8 505-012, Effective: August 10, 2012
© 2012 Taco Electronic Solutions, Inc.
Grounding the Device
The ground terminal (T40) must be securely connected to earth ground. Failure to properly ground this
equipment will result in improper operation. Improper grounding may also increase the risk of electrical
shock and may increase the possibility of interference with radio/TV reception.
For best performance, connect the power supply common terminal (T38) to the same external point as the
ground terminal (T40).
WIRING INFORMATION
WARNING: Terminals 4, 6, 9, 12, 15, 18, and 38 are connected internally on all PSU1 controllers. Discon-
nect ALL power sources when installing or servicing this equipment to prevent electrical shock or equip-
ment damage.
Figure 2: PSU1 Wiring Example - Power Sourcing
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