Installation Guide
4
Unitronics
Removing a Module
8. Turn off the system power.
9. Disconnect the connectors from the Ethernet and USB ports (#2,7 in the Diagram on
page 2).
10. Disconnect the UAC-01EC2 module from the adjacent units: slide its Bus Connector
Lock to the right. If there is a unit located on its right, slide the lock of this module to
the right as well.
11. On the UAC-01EC2 module, pull the top DIN-rail clip up and the bottom clip down.
12. Open the door of the UAC-01EC2 and hold it with two fingers as shown in the figure on
page 3; then pull it carefully from its place.
Wiring
All wiring activities should be performed while power is OFF.
Unused points should not be connected (unless otherwise specified). Ignoring
this directive may damage the device.
Double-check all wiring before turning on the power supply.
Wiring Procedure
Functional ground terminal ( )
Use a wire of minimum thickness of 14 AWG (2 mm
2
); terminate it with a ring or fork
crimp terminal, stud size #6.
Tighten the screw enough to make sure the ring/fork crimp terminal is not loose.
Wiring Guidelines
In order to ensure that the device will operate properly and to avoid electromagnetic
interference:
Use a metal cabinet. Make sure the cabinet and its doors are properly earthed.
Connect the functional ground terminal ( ) to the earth of the system (preferably to the
metal cabinet chassis).
Individually connect each functional ground point ( ) to the earth of the system
(preferably to the metal cabinet chassis). Use the shortest and thickest wires possible:
less than 1m (3.3’) in length, minimum thickness 14 AWG (2 mm
2
).
Ensure shield continuity when extending shielded cables.
N
OTE
For detailed information, refer to the document System Wiring Guidelines, located in
the Technical Library in the Unitronics’ website.
