SEW MOVIDRIVE UL compliant installation

Elevators and other applications must cut off the brakes on both DC and AC sides

The brake rectifier must use a separate power lead and is not allowed to draw power from the motor voltage

Sizes 1 and 2 require the use of PE terminals next to the DC bus

3.6 Braking resistor protection

The same protection requirements as MDX60B/61B: either the internal temperature switch or the external bimetallic relay must be selected. When triggered, K11 must be disconnected and the controller must be prohibited, and the resistance circuit must not be interrupted.

MOVIDRIVE ®  A UL requirement

MOVIDRIVE ®  The A series is an earlier version, but UL requires a high degree of consistency with the compact series.

4.1 On site wiring power terminals

Postfix 0015 to 0300:60/75 ° C copper wire

Suffix 0370 to 0750:75 ° C copper wire

The torque gauge is identical to the compact.

4.2 Short circuit current rating and branch protection

Using the same fuse rating table as the Compact series (see the 400/500V and 230V tables above), the maximum short-circuit current is 200000 A.

4.3 Motor Overload Protection

External motor overheating detection is also required.

4.4 Environmental temperature and derating

The rules are consistent with the Compact series.

4.5 Brake wiring

The data manual clearly states:

The brake rectifier requires a separate power lead and is not allowed to be powered by the motor voltage

Elevator applications, fast braking drive, and CFC/SERVO mode must cut off the brakes on both DC and AC sides

Sizes 1 and 2 require the use of PE terminals next to X4

The connection sequence of the brake must be correct, otherwise irreversible damage may occur

4.6 Braking resistor protection

Similar to the Compact series, the BW series brake resistor requires an internal temperature switch or an external bimetallic relay.

General Wiring and Safety Summary

Based on the data tables of the above series, the following core principles apply to all MOVIDRIVE ®  UL compliant installation of the product:

5.1 Temperature Class of Wires

Low power models (usually ≤ 30A input) can use 60/75 ° C copper wires

High power models must use 75 ° C copper wires

5.2 Terminal torque

Strictly select the torque according to the size. Tightness may damage the terminals, while looseness may cause excessive contact resistance and heat generation.

5.3 Branch Circuit Protection

UL certified fuses, circuit breakers, or Type E combination motor controllers must be used

For 400/500V units, the maximum fuse current varies from 35A to 600A

When using a Type E combination controller, attention should be paid to the coordination of the current limiter, otherwise the SCCR will decrease

5.4 Brake Safety

Double end cut-off brake is required for dangerous applications such as lifting

The brake rectifier requires an independent power supply

The wiring sequence of the brake is strict

5.5 Braking resistor protection

Must be equipped with an over temperature protection device (internal switch or external relay)

During the protective action, the main contactor must be disconnected and the controller must be prohibited

The resistance circuit must not be interrupted under any circumstances

5.6 Environmental and System Limitations

Maximum ambient temperature 40 ° C (without derating), maximum 60 ° C (for derating use)

The external 24V power supply must be limited to 30V/8A or less

UL certification is not applicable to IT systems (ungrounded star points)

5.7 PE grounding

Pay attention to using the PE terminal next to the DC bus for small-sized units such as size 1 and 2

All protective conductors must be reliably connected