Mechanical Brake Control - ABB ACS880-01 Application Manual

34 Parameter settings

Index

Name

91.11

Module 1 type

91.12

Module 1 location

92.01

Encoder 1 type

92.02

Encoder 1 source

92.10

Pulses/revolution

92.17

Accepted pulse freq

of encoder 1

If you use a mechanical brake with the motor thermal protection circuit, pay special attention

to the control of the mechanical brake.

If the motor deceleration by the mechanical brake causes extra heat generation in the Ex

zone, make sure that the use of the brake does not increase the temperature too much. In

this case, make sure that the mechanical brake is activated only at zero speed (see

parameters SBC.11,

In some cases you cannot use the brake for the motor deceleration when the motor thermal

protection circuit has tripped and the motor temperature is too high.

For more information, see the drive firmware manual (or the FSO module user's manual if

you use the Safe brake control (SBC) function of the FSO module).

Example value

FSE-31

2

HTL1

Module 1

2048

300 kHz

SBC.15

and

FSOGEN.51

Description

Sets the type of the safety pulse encoder interface

module 1.

Sets the slot in which the safety pulse encoder interface

module 1 is located.

Activates or deactivates the communication with the

safety pulse encoder interface module 1 and sets the

type for the safety pulse encoder.

Sets the safety pulse encoder interface module that

the safety pulse encoder 1 is connected to.

Sets the number of HTL pulses per revolution for safety

pulse encoder 1.

Adjust the default value to meet the safety pulse en-

coder in use. Make sure that the value is according to

the encoder nameplate.

Sets the maximum pulse frequency range of encoder

1. Adjust the default value to meet the motor and safety

pulse encoder in use. You can use this formula to define

the value: r_max · ppr_enc + 10%, where

• r_max: the maximum motor speed (rpm) used in the

application (or the motor nominal speed)

• ppr_enc: pulses/revolution of the safety pulse en-

coder (parameter 92.10).

or FSOGEN.52).