Hitachi SJ300 Series manual 214

5–2

Introduction

Introduction

A motor speed control system will obviously include a motor and inverter, as well as fuses for safety. If you are connecting a motor to the inverter on a test bench just to get started, that’s all you may need for now. But a fully developed system can also have a variety of additional components. Some can be for noise suppression, while others may enhance the inverter’s braking performance. The figure below shows a system with several possible optional compo- nents, and the table gives part number information.

Motor Control Accessories

From power supply

L1

L2

L3

Breaker,

MCCB or

GFI

AC reactor

RF noise filter

EMI filter

Switch

Ferrite core

Capacitive filter

R

S

T

Inverter

+1

DC link choke

Expansion bay

+

Braking

resistor

Digital input

Braking

expansion card

RB

unit

Encoder input

–

expansion card

GND

A

B

U

V

W

RF noise

filter

T1

T2

T3

AC reactor, or

LCR filter

Motor

Encoder

Thermal switch

	Part No. Series
Name			See
	Europe,
			page
		USA
	Japan
AC reactor, input	ALI–xxx	HRL–x	5–3
side
RF noise filter,	ZCL–x	ZCL–x	5–4
input side
EMI filter	NF–CEHx	NF–CEHxx	5–4
(EMC Class A)
EMI filter	NF–CEHx,	NF–CEHxx,	5–4
(EMC Class B)	with FC–Hx	with FC–Hx
Capacitive filter	CFI–x	CFI–x	5–4
DC link choke	—	HDC–xxx	5–4
Braking resistor	JRB–xxx–x,	JRB–xxx,	5–9
	SRB–xxx–x	SRB–xxx
Braking resistor,	—	HRB1-x,	5–9
NEMA-rated		HRB2-x
		HRB3-x
Resistance braking	BRD–xxx	BRD–xxx	5–8
unit
RF noise filter,	ZCL–xxx	ZCL–xxx	5–4
output side
AC reactor, output	ALI–xxx	HRL–xxx	5–3
side
LCR filter	—	HRL–xxxC	5–3
Encoder feed-back	SJ-FB		5–5
expansion
Digital input	SJ-DG		5–5
expansion card

NOTE: The Hitachi part number series for accessories includes different sizes of each part type, specified by the –x suffix. Hitachi product literature can help match size and rating of your inverter to the proper accessory size.

Each inverter accessory comes with its own printed instruction manual. Please refer to those manuals for complete installation details. This chapter gives only an overview of these optional system devices. For more information on Hitachi inverter system accessories, please contact your Hitachi sales office or distributor.