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11/22
Siemens MD 50.1 · 2015
Motor options
Mounted components
Brake
11
■
Brake control
The brakes are released by DC voltage. The brake is controlled
by the DC supply voltage in systems without a rectifier, or by the
AC supply voltage in systems with a rectifier. Half-wave rectifiers
or rectifier bridges are used as rectifiers.
The rectifiers are listed in the following table.
Switching frequency of PMG rectifiers
Duty cycle/switching frequency for the 205 V DC brake solenoid
Duty cycle/switching frequency for the 180 V DC brake solenoid
Duty cycle/switching frequency for the 103 V DC brake solenoid
Supply
voltage
DC
voltages
AC
voltages
Switching
frequency
Brake L
Without
Rectifier
No restriction
Function
rectifier
See Section
“Function
rectifier”, page 11/23
Brake FDX
-
Rectifier
PMG
See table "Switching
frequency of
PMG rectifiers"
Supply
voltage
Switching frequency
s/h
V
AC
1
10
20
30
40
50
60
70
80
90
100
110
120
130
140
AC 410 ... 480 V
410
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
420
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
440
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
99.40
98.53
97.66
96.80
95.93
95.06
460
98.08
97.21
96.34
95.48
94.61
93.74
92.88
92.01
91.14
90.28
89.41
88.54
87.68
86.81
85.94
480
90.07
89.21
88.34
87.47
86.61
85.74
84.87
84.01
83.14
82.27
81.41
80.54
79.67
78.81
77.94
Supply
voltage
Switching frequency
s/h
V
AC
1
10
20
30
40
50
60
70
80
90
100
110
120
130
140
AC 380 ... 440
380
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
99.54
98.67
400
100.00
99.13
98.27
97.40
96.53
95.67
94.80
93.93
93.07
92.20
91.33
90.47
89.60
88.73
87.87
410
95.18
94.31
93.45
92.58
91.71
90.85
89.98
89.11
88.25
87.38
86.51
85.65
84.78
83.91
83.05
420
90.70
89.84
88.97
88.10
87.24
86.37
85.50
84.64
83.77
82.90
82.04
81.17
80.30
79.44
78.57
440
82.64
81.78
80.91
80.04
79.18
78.31
77.44
76.58
75.71
74.84
73.98
73.11
72.24
71.38
70.51
Supply
voltage
Switching frequency
s/h
V
AC
1
10
20
30
40
50
60
70
80
90
100
110
120
130
140
AC 190 ... 240 V
190
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
200
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
210
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
220
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
99.58
98.71
97.84
96.98
96.11
230
99.04
98.17
97.30
96.44
95.57
94.70
93.84
92.97
92.10
91.24
90.37
89.50
88.64
87.77
86.90
240
90.96
90.09
89.22
88.36
87.49
86.62
85.76
84.89
84.02
83.16
82.29
81.42
80.56
79.69
78.82
© Siemens AG 2015