Installing the control unit on a DIN rail
WARNING!
Do not install the control unit adjacent to electromagnetic disturbance sources,
such as relays, contactors, brake choppers, power and motor cabling. The
minimum recommended distance from such components is 200 mm (7.9 in).
ABB recommends to install metallic screening between the control unit and
the source of disturbance. This can reduce the required distance.
WARNING!
Install the control unit so that air can pass freely through the ventilation holes
in the housing. Do not install the control unit directly above heat generating
equipment.
You can install the control unit on a horizontal or vertical standard 35 × 7.5/15 mm DIN
rail. In horizontal direction, make sure that the connectors are pointing downwards.
In vertical direction, the connectors can point to left or right.
Leave enough space for:
• cabling
• environmental sensors
• replacing the UMU-01 memory unit and real-time clock battery.
The control unit is grounded through the DIN rail and the grounding screw
1. Attach the grounding screw (M4×6 or M4×8) and wire to the control unit. Ground
the control unit to the cabinet frame with the grounding wire. The minimum
cross-sectional area of the ground conductor is 4 mm
2
(12 AWG).
16 Mechanical installation
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