Installing the Elevator Restriction Unit
Elevator Restriction System Installation and Operation Manual
31
2.10
Power and Ground on TX3-ER-8-B
TX3-ER-8-B uses the TX3-PS24-5A power supply, which is a 156 W, 24 V
single output switching power supply in a metal enclosure.
Attention: Connect all relay boards and elevator controller wires to the
ERU before connecting the power.
Connect the included 16 AWG wire to the earth ground.
Figure 17. Earth Ground
2.10.1
External Power Supply Wiring
The power supply terminal block receives 24 VDC from the external
TX3-PS24-5A power supply.
The external TX3-PS24-5A power supply connects to the building power AC
power supply. A voltage selectable switch is located on the side of the unit and is
factory set to 115 V. See the included document LT-6662 for instructions on how
to change the voltage.
Earth Ground
(16 AWG)
