Fig. 3-72 2704 – Extended brake control, zero-speed detection (r0108.14 = 1)
- 2704 -
Function diagram
87654321
fp_2704_54_eng.vsd
DO: SERVO, VECTOR
S120/S150/G130/G150
27.06.13 V04.07.00
Brake control - Extended brake control, zero-speed detection (r0108.14 = 1)
T0
<2>
0.000...300.000 [s]
p1227 (4.000)
0.000...10.000 [s]
p1228 (0.000)
&
T0
(0)
p1224[1]
Standstill threshold
(r0063)
p1225
<2>
0.000...300.000 [s]
p1276 (300.000)
1
0
1
0
p1275.02 (0)
p1275.03 (0)
Brake, threshold
undershot
r1229.7
Brake, monitoring
time expired
r1229.8
(0)
p1224[2]
(0)
p1224[3]
r0063
n_act smooth
[4710.7]
n_stop n_thresh
0.0...210 000.0 [rpm]
p1226 (20.0)
OFF1 present
OFF3 present
Close brake from standstill detection
<2> For p1276 = 300.000 s, the timer is de-activated, i.e. the timer output is always 0. Note: When operating a
motor with a brake which must not be applied while the motor is rotating, the monitoring time of both timers
must be set to 300 s.
<1> Shutdown threshold of the standstill detection. In this case (e.g. when using a brake), another criterion than the
speed actual value can be selected to clear the pulses. Otherwise, we recommend to keep the factory setting.
<1>
1
0
1
-1
0
1
<3>
<3> For operation without brake, p1224[0...3] must be 0 (factory setting) in order to avoid undesirable interaction
with the sequence control.
[2707.1]
[2711.1]
Background
T0
SET
(Q=1)
Q
RESET
(Q=0)
Q
1
(0)
Brk close standstill
p1224[0]
<4> The internal signal comprises signals that lead to OFF1 or OFF3, e.g. BICO or fault response.
<4>
r0063[0]
n_act unsmoothed
[4715.7] (r0063[0])
p1225
<5>
<5> Only for SINAMICS S120.
<5>
r0060
n_set before filter
[6030.2]
for VECTOR
r1438
n_ctrl n_set
[5030.8]
for SERVO
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