Built-in holding brakes for SIMOTICS S- 1FT7/1FK7 motors

• Информационные материалы

  Информационные материалы

  Built-in holding brakes for SIMOTICS S-1FT7/1FK7 motors

  Many drives need a holding brake with an emergency stop function for safety reasons or to meet process requirements.

  The permanent-magnet or spring-loaded, single-face brakes used for the 1FT7/1FK7 motors function according to the closed-circuit current principle. The magnetic field of the permanent-magnet exerts a tension on the brake anchor plate, i.e. in a condition of zero current, the brake is closed and the motor shaft thereby stopped. When the rated voltage of 24 V DC ± 10 % is applied to the brake, current flows through the coil and produces a counter-field that cancels the pull of the permanent-magnet, causing the brake to release.

  The spring-loaded, single-face brake operates by the force of pressure exerted by the spring instead of a permanent-magnet. In the event of an emergency stop or power outage, approximately 2000 braking operations can be performed with the maximum switched energy without causing excessive wear on the holding brake (condition: maximum external moment of inertia = moment of inertia of motor and n_max type-specific).

  The holding brake is not an operational brake.

  In order to avoid switching overvoltages and any related effects on the plant environment, the brake cables must be connected externally with a varistor. The connection is made via the power connector or the terminal box.

  When connected to the SINAMICS S120 drive system, this overvoltage protection is already included.

  Технические данные

  Motor		Built-in holding brake
  Shaft height	Type	Holding torque1)	Direct current	Opening time with varistor	Closing time with varistor	Moment of inertia	Maximum switched energy per brake operation from n = 3000 rpm
  SH						J
  		Nm (lbf-ft)	A	ms	ms	10–4 kgm2 (10‑3 lbf-in-s2)
  1FT7 motors/with permanent-magnet brake, zero-backlash
  36	1FT703	3 (2.2)	0.3	60	25	0.12 (0.11)	30
  48	1FT704	8 (5.9)	0.6	90	30	0.87 (0.77)	270
  63	1FT706	18 (13.0)	0.8	150	50	2.84 (2.51)	880
  80	1FT708	48 (35.4)	1.0	220	65	15.4 (13.6)	1900
  100	1FT710	85 (62.7)	1.6	250	70	27.6 (24.4)	5300
  1FK7 Compact/High Dynamic/High Inertia motors with permanent-magnet brake, zero-backlash
  10	1FK701	0.4 (0.3)	0.3	30	20	0.019 (0.02)	2
  28	1FK7022	1.0 (0.74)	0.3	30	20	0.07 (0.06)	8
  36	1FK703	1.9 (1.4)	0.3	50	30	0.098 (0.087)	40
  48	1FK704	4.0 (2.95)	0.5	70	30	0.32 (0.28)	150
  63	1FK706	13 (9.59)	0.8	100	50	0.99 (0.88)	380
  80	1FK708	22 (16.2)	0.9	200	60	3.28 (2.90)	1400
  100	1FK7100	23 (17.0)	1.0	300	70	7.5 (6.64)	3380
  100	1FK7101 1FK7103 1FK7105	43 (31.7)	1.0	300	70	7.5 (6.64)	3380
  1FK7-DYA geared servomotors and 1FK7 helical/bevel/parallel shaft/worm geared motors
  36	1FK7032	1.3 (0.96)	0.4	50	30	0.08 (0.07)	17
  48	1FK704	3.2 (2.36)	0.6	70	30	0.72 (0.64)	74
  63	1FK706	13 (9.59)	0.8	100	50	2.25 (1.99)	400
  80	1FK7080 1FK7083	10 (7.38) 22 (16.2)	0.7 0.9	100 200	50 60	3.1 (2.74) 8.6 (7.61)	400 1400
  100	1FK7100	22 (16.2)	0.9	200	60	8.6 (7.61)	1400
  100	1FK7101 1FK7103 1FK7105	41 (30.2)	1.0	300	70	13.5 (11.95)	3000

  
  
  

  ¹⁾ The holding torque is the highest permissible torque with which the closed brake can be loaded in steady-state operation without slip (holding function when motor is stationary).