10
Mechanical support clamp of I/O cable
11
Voltage dependent resistor ground screw (VAR), arranged below the control
tray.
12
Two EMC filter ground screws, one arranged below the control tray bracket
and the other arranged on the left and above the protective cover.
13
Protective cover. Below the protective cover: input voltage connection (L1,
L2, L3), motor connection (T1/U, T2/V, T3/W) and DC connection (UDC+,
UDC-).
14
PE connection (power line)
15
Earthing connection (motor)
16
A primary fan
17
Auxiliary fan
Operation principle and hardware description 35