ABB ACL30, User Manual

Page: 153 / 360

Program features 153

Operation time scheme
The timing diagram below illustrates the operation time scheme of mechanical brake
control.
Start command
t
Modulating
Magnetized
SPEEDREF ACT
1 3 7
5
9
t
md
t
bod
T
s
n
cs
T
mem
2
t
trd
10
t
sd
t
mod
Torque limit
t
tru
4
6
11
T
max
8
T
mem
12
T
pv
t
tpv
R
bs
13
t
plt
t
boh
t
sd
Start delay (par. 10.06 )
T
plt
Phase loss test (par. 99.16 )
1
t
md
Magnetizing delay (par. 10.07 )
2
t
tpv
Torque proving delay (par. 35.84 )
3
t
tru
Torque ramp up time (par. 35.10 )
t
boh
Brake open hold (internal delay of DriveSPC, t
boh
≈
30 ms)
t
bod
Brake open delay (par. 35.04 )
t
bcd
Brake close delay (par. 35.09 )
t
mod
Modulation delay (par. 35.05 )
t
trd
Torque ramp down time (par. 35.11 )
n
cs
Brake close speed (par. 35.06 )
T
s
Start torque (par. 35.81 )
T
mem
Memorized torque (par. 03.05 )
R
bs
Brake slip check region
4
1
Phase loss test, when disabled T
plt
= 0 s, when enabled T
plt
≈ 50 ms
2
AM:
t
md
= parameter 10.07 DC MAGN TIME, PMSM:
t
md
= 0 s
3
If torque is not proved within the torque proving time delay, the drive trips on fault TORQUE PROVE.
4
If torque proving is in progress and value in parameter 05.04 LIFT SPEED ACT is greater than value in parameter
35.85 SLIP SPEED LIM for a longer period than defined with parameter 35.86 SLIP FAULT DLY, the drive trips on
fault BRAKE SLIP.