Transport & Storage
Correct transport, storage, erection and mounting, as well as careful
operation and maintenance are essential for proper and safe operation of the
Protect the inverter against physical shocks and vibration during transport
and storage. Also be sure to protect it against water (rainfall) and excessive
temperatures (see table on page 101).
Work on the device/system by unqualified personnel or failure to comply
with warnings can result in severe personal injury or serious damage to
material. Only suitably qualified personnel trained in the setup, installation,
commissioning and operation of the product should carry out work on the
Only permanently-wired input power connections are allowed. This
equipment must be grounded (IEC 536 Class 1, NEC and other applicable
If a Residual Current-operated protective Device (RCD) is to be used, it must
be an RCD type B.
Machines with a three phase power supply, fitted with EMC filters, must not
be connected to a supply via an ELCB (Earth Leakage Circuit-Breaker - see
DIN VDE 0160, section 5.5.2 and EN50178 section 18.104.22.168).
The following terminals can carry dangerous voltages even if the inverter is
- the power supply terminals L/L1, N/L2, L3.
- the motor terminals U, V, W, DC+, DC-
This equipment must not be used as an 'emergency stop mechanism' (see
EN 60204, 22.214.171.124)
The connection of power, motor and control cables to the inverter must be carried
out as shown in Figure 2-4 on page 25, to prevent inductive and capacitive
interference from affecting the correct functioning of the inverter.
MICROMASTER 420 Operating Instructions