ABB machinery drives Hardware manual ACS850-04 drive modules

Operation principle and hardware description

What this chapter contains

This chapter describes the operating principle and construction of the drive module

in short.

Product overview

The ACS850-04 is a drive module for controlling asynchronous AC induction motors,

permanent magnet motors and ABB synchronous reluctance motors (SynRM

motors).

The main circuit of the drive module is shown below.

Type designation key

The type designation contains information on the specifications and configuration of

the drive module. The first digits from left express the basic configuration. The

optional selections are given thereafter, separated by plus signs, eg, +E208. The

main selections are described below. Not all selections are available for all types.

For more information, refer to ACS850-04 Ordering Information

(3AXD00000579470), available on request.

Code Description

Basic code, eg, ACS850-04-710A-5

Product series

ACS850 ACS850 product series

Type

04 Air-cooled drive module. When no options are selected: IP00 (UL type open), top entry and

bottom exit for cables (terminals at the side of the module), external JCU control unit with a

front cover but no control panel, Standard Control Program, AC choke, coated boards, Safe

torque off function, pedestal guide plate, extraction and insertion ramp, module fastening

bracket and screws, hardware manual, multilingual quick start-up guide and CD containing

all manuals.

Size

xxxA Refer to the rating tables, page 125.

Voltage range

5 380…500 V AC

Option codes (plus codes)

Resistor braking

D150 Brake chopper and brake resistor connection busbars, and R+ and R- terminals in the power

cabling panel (+H381 or +H383) if the power cabling panels are ordered

Filters

E208 Common mode filter. Includes three extension busbars to the drive module output busbars

with units without option +H381 or +H383.

Cabling panels

H381 Power cabling panels (U1, V1, W1, U2, V2, W2 terminals) to be installed in the cabinet,

rubber grommet that gives the unit an IP20 protection class.

H383 Power cabling panels (U1, V1, W1, U2, V2, W2 terminals) to be installed in the cabinet,

degree of protection: IP00.

DC busbars

H356 DC output busbars, and DC+ and DC- terminals in the power cabling panel (+H381 or

+H383) if the power cabling panels are ordered

Pedestal

0H354 No pedestal

Control panel and control unit

J400 Control panel inserted onto the JCU control unit. Includes control panel mounting platform

and internal cable.

J410 Control panel with a door mounting kit. Includes control panel mounting platform, IP54 cover

and a 3-meter panel connection cable.

J414 Control panel holder with cover and internal cable but no control panel. Not to be used with

+J400.

0C168 Without front cover for the JCU control unit

P905 JCU control unit inside the circuit board compartment of drive module

Planning the cabinet installation

What this chapter contains

This chapter guides in planning drive cabinets and installing the drive module into a

user-defined cabinet so that the front of the module faces the cabinet door. The

chapter gives cabinet layout examples and free space requirements around the

module for cooling. The issues discussed are essential for the safe and trouble-free

use of the drive system.

Limitation of liability

The installation must always be designed and made according to applicable local

laws and regulations. ABB does not assume any liability whatsoever for any

installation which breaches the local laws and/or other regulations.

Basic requirements for the cabinet

Use a cabinet which:

• has a frame sturdy enough to carry the weight of the drive components, control

circuitry and other equipment installed in it

• protects the user and drive module against contact and meets the requirements

for dust and humidity

• has sufficient air inlet and outlet gratings that allow free flow of cooling air through

the cabinet. This is critical for proper cooling of the drive module.

Planning the layout of the cabinet

Design a spacious layout to ensure easy installation and maintenance. Sufficient

cooling air flow, obligatory clearances, cables and cable support structures all

require space.

Place the control board(s) away from:

• main circuit components such as contactor, switches and power cables

• hot parts (heat sink, air outlet of the drive module

Supporting frame of the cabinet 9 JCU control unit.

2 Vertical (2a, 2b) and horizontal (2c, 2d) air

baffles that separate the cool and hot

areas (leak-proof lead-throughs). See also

page 46.

Note: With an internal control unit (option +P905), the

air inlet 17 is critical for proper cooling of the control

board.

2e Optional air baffle that is needed when 10 External control cables

there is no fan on the lower part of the 11 Grounding screws

cabinet door (see 1b on page 38). 12 Alternative to grounding screws (11)

3 Cabinet grounding busbar (PE) 13 Air flow to the roof

4 Input power cable including the protective 14 Air flow through the drive module (side view)

ground conductor (PE) of the drive 15 Air inlet gratings in the cabinet door

5 Disconnector and fuses 16 Air inlet for the brake option

6 Contactor 17 Air inlet for circuit boards and DC and output busbars

7 Drive module

8 Motor cable including the protective

ground conductor of the drive