60 Program features
Timing diagram
The simplified timing diagram below illustrates the operation of the brake control
function. Refer to the state diagram above.
T
s
Start torque at brake open (parameter
)
T
mem
Stored torque value at brake close (
)
t
md
Motor magnetization delay
t
od
Brake open delay (parameter
n
cs
Brake close speed (parameter
t
ccd
Brake close command delay (parameter
)
t
cd
Brake close delay (parameter
t
cfd
Brake close fault delay (parameter
)
t
rod
Brake reopen delay (parameter
BOW
BOD
BCW
BCD
Start command
(
b5)
Modulating (
b6)
T
mem
1
2
3
4
5
6
7
8
9
Ready ref (
b2)
Torque reference
Speed reference
Brake control signal
(
b0)
Opening torque
request (
b1)
Ramp to stopped
request (
b3)
Hold stopped request
(
b2)
t
od
T
s
n
cs
t
ccd
t
cd
t
cfd
t
rod
State
BOW
BOD
BCW
BCD
t
md
Summary of Contents for ACS860
Page 1: ... ABB INDUSTRIAL DRIVES ACS860 primary control program Firmware manual ...
Page 4: ......
Page 10: ...10 Table of contents ...
Page 18: ...18 Using the control panel ...
Page 24: ...24 Control locations and operating modes ...
Page 54: ...54 Program features ...
Page 78: ...78 Program features ...
Page 90: ...90 Application macros ...
Page 342: ...342 Additional parameter data ...
Page 380: ...380 Fault tracing ...
Page 381: ...Fault tracing 381 ...
Page 382: ...382 Fault tracing ...
Page 436: ...436 Control chain diagrams ...