Wiring; Wiring The Power Supply And Motor - Watt Drive L2000 Series Manual

6.

Wiring

CAUTION Fasten the screws with the specified fastening torque so that they will not
loosen unintentionally. Check all terminals for loose screws. Otherwise there
is a danger of fire.
CAUTION Use 60/75 deg C Cu wire or equivalent only.
CAUTION Open type equipment
CAUTION A class 2 circuit wired with class 1 wire or equivalent
CAUTION Suitable for use on a circuit capable of delivering not more than 5,000 rms symmetrical
amperes, 240V maximum. For model with NFE.
CAUTION Suitable for use on a circuit capable of delivering not more than 5,000 rms symmetrical
amperes, 480V maximum. for model with HFE.
CAUTION Remarks for using earth leakage circuit breakers in the mains supply
Frequency inverters with CE-filters (RFI-filter) and screened motor cables have
a higher leakage current against earth. Especially in the moment of switching
this can cause unintentional triggering of earth leakage circuit breakers.
Because of the rectifier on the input side of the inverter there is the possibility
to stall the switch-off function through amounts of DC current. For these
reasons, the following items should be observed:
Only pulse current sensitive earth leakage circuit breakers which have a short
term delay and a higher trigger current (500mA) should be used. Other
components should be secured with separate earth leakage circuit breakers.
Earth leakage circuit breakers in front of an inverter´s rectifier are not an
absolute protection against direct touching.
CAUTION Each phase of the power supply has to be provided with a fuse. Otherwise,
there is a danger of fire.
CAUTION As for motor leads, earth leakage breakers, and electromagnetic contactors,
be sure to use the ones that have the correct rating. Otherwise, there is a
danger of fire.
CAUTION Make sure that the mains supply leads are reliably fixed.

Wiring the power supply and motor

In order to connect cables to the power supply or alarm terminals the digital operator has to be
opened. For this, first of all the corresponding screw has to be loosened. The location of the
terminals is depicted in the figure below:
Short bar
+ +
1
L1 L2 L3/N T1/U
To power supply
Upper terminal row
T2/V T3/W
Mains circuit terminals
Motor
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L2000-004NF
digital operator
(view from below)
Alarm terminals
Grounding terminal (PE)
Wiring
Alarm relay
(L2000 internal)
AL0 AL1 AL2
To fault alarm sig-
nalling equipment