14 - PROTECTION CABINET OPTION
Purpose
■ Protects the motors
Power supply
■ See connection sheet or wiring diagram supplied with the cabinet.
Limits of use
■ Ambient air:
- Storage temperature: -40/+60°C
- Operating temperature: -25/+55°C
Components
■ Packing boxes are provided for the installer on the base of the cabinet.
■ A padlockable front disconnect switch, with auxiliary contact, tted with a device requiring the power supply to be switched off before
the door is opened. This works as an emergency stop.
■ One thermal-magnetic circuit breaker for each motor, padlockable with normally open auxiliary contact.
■ 1 x 3-stage terminal (1, 2, PE) for each fan line for 0/10 V signal (EC FMA option).
Electrical connection
■ The motors are connected to the front of the mounted cabinet on the inlet manifold side.
■ For electrical connection, refer to the connection sheet or wiring diagram supplied with the cabinet.
■ The cables to use for the power connection must be made from copper. If cables made from other materials, such as aluminium,
are used, bimetallic terminals and connectors or intermediate terminals must be used.
■ Make the electrical connections as follows:
- Connection of the power circuit to the main switch.
- Connection of the protective conductor to the earth terminal.
- Connection of 0/10 V signal (EC fan motor assembly option) on 3-stage terminals (1, 2, PE) 1 terminal available for each fan line.
- A single common value of 0/10 V must be connected on the two terminal strips provided for this purpose
Information available
■ See connection sheet or wiring diagram supplied with the cabinet.
■ On dry contacts:
- Switch position feedback
- Fault summary (failsafe)
17
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