SEW-Eurodrive MOVITRAC 07, Системное руководство

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System Manual – MOVITRAC® 07
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Installation instructions
Installation
Line choke • When more than four 3-phase units or more than one 1-phase unit are connect-
ed to a supply system contactor designed for the total current: Insert a line choke
in the circuit to limit the inrush current.
Separate cable
ducts • Route power cables and electronics cables in separate cable ducts.
Input fuses and
earth-leakage cir-
cuit breakers • Install input fuses at the start of the supply system lead after the supply bus junc-
tion. Use type D, DO, NH fuses or power circuit breakers.
Using an earth-leakage circuit breaker as the sole protection device is not per-
mitted. Earth-leakage currents > 3.5 mA can arise during normal operation of the
inverter.
PE input connec-
tion • Connect the PE conductor according to the regulations of the country in question.
Earth-leakage currents > 3.5 mA can arise during normal operation of the inverter.
IT systems • SEW recommends using earth-leakage monitors with a pulse code measuring
process in voltage supply systems with a non-earthed star point (IT systems).
This avoids mis-tripping of the earth-leakage monitor due to the earth capacitance of
the inverter.
Contactor • Only use contactors in utilization category AC-3 (IEC 158-1).
Cross sections • Supply system lead: Cross section according to nominal input current I
system
at
rated load
Motor lead: Cross section according to output rated current I
N
Electronics cables: Maximum 1.5 mm
2
(AWG16) without conductor end sleeves
Maximum 1.0 mm
2
(AWG17) with conductor end sleeves
Line lengths for
single drives The line lengths for size 0 are independent of the PWM frequency. The motor leads for
sizes 1 through 4 depend on the frequency. The permitted motor cable lengths are listed
in Sec. "Project Planning" of the MOVITRAC
®
07 System Manual.
Unit output • Only connect an ohmic/inductive load (motor); do not connect a capacitive load!
Braking resistor
connection • Shorten the cables to the required length.
Binary inputs /
binary outputs • Binary outputs are short-circuit proof and interference-voltage-proof up to 35
V. They can suffer irreparable damage from higher external voltages!
Interference
emission • Use shielded motor cables or HD output chokes for EMC-compliant installation. This
EMC-compliant installation will then comply with EN 55011, class B limit.
Shielding and
earthing • Shield the control cables.
• Connect the shield by the shortest possible route and make sure it is earthed over a
wide area.
• Provide high frequency compatible earthing for MOVITRAC
®
07 and all additional
units (wide area metal-on-metal contact between the heat sink and ground, e.g. un-
painted switch cabinet mounting panel).