Siemens SIMOTICS S-1FK7 - Technical Data of the Holding Brake

Description of the motors
2.6 Mounting and options
1FK7 G2 synchronous motors
Operating Instructions, 05/2021, A5E50907562B AA
45
• Do not exceed the maximum operating energy per emergency braking.
NOTICE
Premature wear of the motor holding brake when operated outside its permissible
voltage range
Operating the motor holding brake outside its permissible voltage range at the motor
connection will damage the brake.
• Ensure that the motor holding brake is only operated within its permissible voltage
range.
• The rated voltage of the holding brake is 24 V DC +/- 10 %. Voltages outside this tolerance
range can cause disturbances.
Note
Subsequent conversion of motors with or without a holding brake is not possible.
The technical data for the holding brake is contained in the Configuration Manual of the
motor.
2.6.6.3 Technical data of the holding brake
Table 2- 13 Technical data of the holding brakes used for 1FK7 motors
Motor type
Holding
torque at 120
°C
M
4
/ Nm
Dyn. braking
torque
M
1(m)
1)
/ Nm
DC current at
20 °C
I / A
Opening time
with varistor
T
0 / ms
Closing time
with varistor
tc1 / ms
Highest braking
energy
W / J
1FK703
1.9
1
0.3
50
30
40
1FK704
4
3
0.5
70
30
150
1FK706
13
8.5
0.8
100
50
380
1FK708
22
11
0.9
200
60
1400
1FK7100
23
11
1.0
300
70
3380
1FK7101
1FK7103
1FK7105
43
25
1.0
300
70
3380
*) (m) = averaged value
Note
If the brake is switched in two stag
es ("click" twice), then when opening, the first switching
point is decisive, and when closing, the second switching point.