Danfoss VLT Ea4, Operating Manual

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1 LCP cradle
2 Control card (underneath cover)
3 Control terminal blocks
4 Top-level drive system nameplate. See Illustration 1 .
5 44-pin cables from MDCIC board to drive modules
6 Ferrite core
7 MDCIC card
8 Control shelf
9 Switch mode power supply (SMPS). An external
230 V supply is needed to power the SMPS.
10 Pilz relay
11 DIN rail
12 Terminal block mounted on DIN rail
3.4 Wire Harnesses
The VLT® Ea4 Parallel Drive Modules basic kit contains 3 wiring harnesses:
Ribbon cable with 44-pin connector (on both ends of the cable)
Relay cable with 16-pin connector (on 1 end of the cable)
DC fuse microswitch cable with 2-pin connectors (on 1 end of the cable)
3.5 AC Fuses
Fuses installed on the supply side ensure that if a component breaks down (first fault) inside the drive, any potential damage is
contained inside the drive enclosure. The drive modules are supplied with built-in AC fuses.
3.6 DC Fuses
The VLT® Ea4 Parallel Drive Modules basic kit contains 2 DC fuses per drive module. These fuses are placed on the DC terminals to
ensure that any overcurrent damage is contained inside the drive modules.
N O T I C E
Use of fuses on the supply side is mandatory for IEC 60364 (CE) compliant installations.
Illustration 6: DC Fuse and Microswitch Connector
1 DC fuse
2 Microswitch connector
AQ434333248451en-000101 / 130R1286 14 | Danfoss A/S © 2023.01
Product Overview
VLT Ea4 Parallel Drive Modules
Operating Guide