Hitachi SJ300-037HFE 사용자 설명서

Using Intelligent Output Terminals

Oper

ations

a

nd Moni

tor

ing

The Brake Control function enables the inverter to control external braking systems with a 
particular safety characteristic. A complete discussion of the operation of brake control is in 

. The block diagram and table that follow 

describe the configuration of the outputs [BRK] Brake Release and [BER] Brake Error.

Other outputs listed below require expansion card SJ-FB Encoder Feedback board. Please see 
the SJ-FB manual for more information.

19

BRK

Brake Release

ON

when the inverter signals the external 
brake system to release (open) its brake

OFF

when the inverter is not driving the motor, 
and needs the external brake engaged

20

BER

Brake Error

ON

when the output current is less than the set 
releasing current

OFF

when the brake function is not in use, or 
when the output current to the motor is 
correct and it is safe to release the brake

11, 12, 13, 14, 15,
AL0 – AL2

B120, B121, B122, B123, 
B124, B125, B126

Notes: 
• The brake release logic convention is such that 

an open circuit fault (such as loose wire) 
causes the external brake to engage.

[BRK] Brake release

[BOK] Brake confirmation

[BER] Brake error

CM2

13

14

15

11

12

See I/O specs on 

page 

Inverter output 
terminal circuit

RY

+
–

RY

Example: (Requires output configuration—
see page 

.)

BRK

BER

21

ZS

Zero Speed Detect signal

Signal indicates the encoder pulses of the 
motor have stopped

22

DSE

Speed Deviation Excessive

Velocity error exceeds the error threshold 
defined by parameter P026

23

POK

Positioning Completion

Indicates the load position is at the target