ABB ACS880-204LC, Руководство по оборудованию

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Cabinet temperature supervision
In liquid-cooled drive systems, the cabinet can be totally sealed from the ambient air. The
air inside the cabinet must be able to circulate freely. You can install a fan inside the cabinet
to push air through a heat exchanger.
You can use thermal switches [F6.10…11] to supervise the temperature inside the cabinet.
Install the thermal switches on the hottest element of the cabinet. In this example, the thermal
switches are on the DC busbar above the AC fuses [F6.10] and below the LCL filter capacitors
[F6.11]. ABB recommends to use thermal switch with 110 °C (230 °F) temperature limit for
the AC fuses and thermal switch with 70 °C (158 °F) temperature limit for the LCL filter
capacitors. Make sure that components located in other cubicles are properly cooled.
Wire the switches to a digital input (DI) of the supply control unit (1 = OK,
0 = overtemperature). In case of overtemperature, the switch opens and trips the supply
unit on a fault. You can adjust the delay time by parameters. For the example wirings, see
chapter
Example circuit diagrams .
Note:
If you install the switches on the busbars, make sure there is proper insulation between the
busbars and thermal switches. The module has its own temperature supervision. See
ACS880 IGBT supply control program firmware manual (3AUA0000131562 [English]).
34 Cabinet construction