140XBP00300 软启动器
失速防止功能是什么意思?
如果给定的加速时间过短,变频器的输出频率变化远远超过转速(电角频率)的变化,变频器将因流过过电流而跳闸,运转停止,这就叫作失速。为了防止失速使电机继续运转,就要检出电流的大小进行频率控制。当加速电流过大时适当放慢加速速率。减速时也是如此。两者结合起来就是失速功能。
15、有加速时间与减速时间可以分别给定的机种,和加减速时间共同给定的机种,这有什么意义?
加减速可以分别给定的机种,对于短时间加速、缓慢减速场合,或者对于小型机床需要严格给定生产节拍时间的场合是适宜的,但对于风机传动等场合,加减速时间都较长,加速时间和减速时间可以共同给定。
16、什么是再生制动?
电动机在运转中如果降低指令频率,则电动机变为异步发电机状态运行,作为制动器而工作,这就叫作再生(电气)制动。
17、是否能得到更大的制动力?
从电机再生出来的能量贮积在变频器的滤波电容器中,由于电容器的容量和耐压的关系,通用变频器的再生制动力约为额定转矩的10%~20%。如采用选用件制动单元,可以达到50%~。
18、请说明变频器的保护功能?
保护功能可分为以下两类:
(1) 检知异常状态后自动地进行修正动作,如过电流失速防止,再生过电压失速防止。
(2) 检知异常后封锁电力半导体器件PWM控制信号,使电机自动停车。如过电流切断、再生过电压切断、半导体冷却风扇过热和瞬时停电保护等。
19、为什么用离合器连续负载时,变频器的保护功能就动作?
用离合器连接负载时,在连接的瞬间,电机从空载状态向转差率大的区域急剧变化,流过的大电流导致变频器过电流跳闸,不能运转。
VEXTA 2IK6RGK-AA 2IK6RGKAA
VEXTA 2IK6GN-CW 2IK6GNCW
VEXTA 2IK6GN-AW 2IK6GNAW
VEXTA 2IK6GN-AUL 2IK6GNAUL
VEXTA 2IK6A-AULA 2IK6AAULA
VEXTA 2GN9KA 2GN9KA
VEXTA 2GN9KA 2GN9KA
VEXTA 2GN9KA 2GN9KA
VEXTA 2GN9K 2GN9K
VEXTA 2GN7.5KA 2GN75KA
VEXTA 2GN5KA 2GN5KA
VEXTA 2GN50KA 2GN50KA
VEXTA 2GN30K 2GN30K
VEXTA 2GN30K 2GN30K
VEXTA 2GN18KA 2GN18KA
VEXTA 2GN15KA 2GN15KA
VEXTA 2GN15KA 2GN15KA
VEXTA 2GN12.5KA 2GN125KA
VEXTA 2GN12.5KA 2GN125KA
VEXTA 2GN10XK 2GN10XK
VEXTA 2GN100KA 2GN100KA
VEXTA 2GK75KA 2GK75KA
VEXTA 2GK6KA 2GK6KA
VEXTA 2GK6KA 2GK6KA
VEXTA 2GK60KA 2GK60KA
VEXTA 2GK180KA 2GK180KA
VEXTA 2GD5K 2GD5K
VEXTA 2GD200K 2GD200K
VEXTA 2GB30KA 2GB30KA
VEXTA 2CSM-101 STEPPING MOTOR **
VEXTA 2.7A, 200VAC BRUSHLESS DC MOTOR DRIVER FBLD120C
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Vexta 2 phase-induction PK243-01A
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Vexta 2 Phase Stepping Motor, Model PH299-01
Vexta 2 Phase Stepping Motor PK266-03A NIB
VEXTA 2 PHASE STEPPING MOTOR PK243-01AA-C17
Vexta 2 Phase Stepping Motor PH266-01B Oriental 1.8"/Step
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Vexta 2 Phase Stepping Motor P0074-9212HE DC 2.8V
Vexta 2 Phase Stepping Motor Model PK245-01BA
VEXTA 2 Phase Stepping Motor C5347-9212M
Vexta 2 Phase Stepping Motor C5335-9212M
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Vexta 0.72deg, 1.7A Geared Stepper Motor #ASM66AA-N36
Vexta 0.05deg, 2.5A Geared Stepper Motor #ASM66AK
Vexta / Hi-Drive: PH544-NB-C2 Stepping Motor. 5-Phase, 0.72°, 0.75A DC. O
Vexta / Hi-Drive: PH533-NB-C2 Stepping Motor. 5-Phase, 0.72°, 0.75A DC. O
VEXTA * EMP402 * EMP Series Programmable Motion Controller
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VEXTA - Schrittmotor mit Magnet-Bremse 1Ph 200-230V - ASM69MC
Vexta - PX245-01AA-C1 - Stepping Motor 1.2A DC 4V
Vexta -- PX245-01AA-C1 --
VEXTA - PK266-01B - C&D DISPENSE ARM MOTOR
VEXTA - 5-Phasen Schrittmotor mit elektromagnetischer Bremse - PK564AWM
VEXTA - 42-0007-003 - 2 PHASE STEPPING MOTOR
VESTA STEPPER MOTOR MODEL PK266-0IB
VESTA STEPPER MOTOR MODEL PK264M-02A
VESTA STEPPER MOTOR MODEL PK264-01B W/ D6LC-6.3 DAMPER
VESTA STEPPER MOTOR MODEL PK245-02AA
VESTA STEPPER MOTOR MODEL PK245-02A
VESTA STEPPER MOTOR MODEL PK244-0IAA
VESTA STEPPER MOTOR MODEL PH265-E2.6
VESTA STEPPER MOTOR MODEL PH264-E1.5B
VARIAN 0400001861 ORIENTAL MOTOR VEXTA MOTOR STEPPING UPH566-A-A19 407375
UV Lamp Lift Assembly, Vexta Stepping Motor PX243G01-01B
USM206-401W Oriental Motor Vexta Speed Control Motor USM206401W
VEXTA UDK5107NW-A2 STEPPER DRIVER 5 PHASE 4AMP 100/115V 50/60HZ CO
Vexta Stepping Motor, 5-Phase, DC 0.87V, 1.4A, Model: PK564AW-P50 (wrs)
Vexta Stepping Motor, 5-Phase, DC 0.75A, Model: PK545-NAC (wrs)
VEXTA SPG6100K PULSE GENERATOR CIRCUIT BOARD
VEXTA PX245-02AA-C4 PHASE STEPPING MOTOR FREE SHIPPING!
Vexta PK569AW 5 Phase Stepping Motor Tested
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VEXTA ORIENTAL MOTOR OPERATIonAL UNIT OPX-1(B11)
Vexta C6838-9212K-C5 2 Phase Stepping Motor
Vexta 5-Phase Stepping Motor PK564AW-T10, DC 0.87V, 1.4A (wrs)
Vexta 5-Phase Stepping Motor PK564AW-T10, DC 0.87V 30/DAY WARRANTY
SUPER VEXTA UDX5107N METER PANEL GROUND9
ORIENTAL MOTOR PH268-21-A31 VEXTA STEPPING MOTOR, 5.4 VDC, 1.5 A 2PHASE CE
ORIENTAL MOTOR OSD-304U SUPER VEXTA 2-PHASE STEPPING DRIVER 0SD-304U GL
UPH596-A Oriental Motor Vexta In Box Motor UPH596A
Upchurch Scientific S-2394 Vexta 2 Phase Step Motor PV267-02BA-C1 Driver Board
UP TO 2 BRAND SUPER VEXTA PULSE GENERATORS MODEL #XG7100S
TYLAN GENERAL MDVX-100BS01, MOTOR DRIVEN THROTTLE VALVE, VEXTA PH265-02, 399799
TYLAN GENERAL MDVX-100B MOTOR DRIVEN THROTTLE VALVE, VEXTA PH265-02, 399798
TYLAN GENERAL MDVX-100B MOTOR DRIVEN THROTTLE VALVE, VEXTA PH265-02, 399797
TYLAN GENERAL MDVX-100B MOTOR DRIVEN THROTTLE VALVE, VEXTA PH265-02, 399268
TYLAN GENERAL MDVX-100B MOTOR DRIVEN THROTTLE VALVE, VEXTA PH265-02, 399265
TYLAN GENERAL MDVX-100B MOTOR DRIVEN THROTTLE VALVE, VEXTA PH265-02, 2 PHASE
TYLAN GENERAL INC. MDV-018S01-J Valve Throttle MDV-018S01, APC, Vexta; PH265-02
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TOKYO ELECTRON (TEL) 1110-409901-11 VEXTA A4385-9015E VEXTA, A4385-9015E, 5-PHA
TOKYO ELECTRON (TEL) 023-001549-1 ORIENTAL PK268-01A Oriental Vexta Stepping Mo
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This is a lot of 3 VEXTA CD Motors PH266-E1.2-C19 (6V)
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