自己加装变频器引起的电机发热或者烧毁，由于不明原因，用户往往把原因往往归结在电机的质量问题上，事实上，这些貌似电机的故障其实都不是电机本身的原因，大多是变频器调试的不规范或者是非变频电机当变频电机使用等原因造成的，主要有以下几种情况： 1、把普通电机当变频电机使用。由于普通电机散热风扇跟转轴连在一起，当用变频器调速时，转速不稳定，达不到电机的额定转速，散热风扇不能发挥正常作用，引起电机散热不好；再加上普通电机不是按变频要求设计，从而使电机发热或者烧毁。 2、变频电机和变频器不经过调试就直接连在一起使用。变频器控制电机常用的两种方式是矢量控制和V/F曲线控制，每种控制方式都要首先将电机的类型（同步、异步、有无编码器）、电机额定功率、额定电压、额定电流、转速或者极数、额定频率、高运行频率、电机起动停止的加减速时间、变频器控制电机的保护方式以及保护比例系数、载波频率等设定好，缺一不可。
Giddings & Lewis PiC900 Ethernet TCP/IP, 502-04137-00, M.1016.9694 R6



Gidding & Lewis PiC900 502-03640-02R1 *USED*



Giddings & Lewis PiC900 Part # 502-03673-00R1 - Fully Functional & Excellent
Customs services and international tracking provided


NEW! Giddings Lewis PiC900 DeviceNet 502-04157-00R0
Customs services and international tracking provided


Gidding & Lewis PiC900 502-03853-20R4 *USED*



GIDDINGS LEWIS 502-03550-00R3 PIC900 PROGRAMMABLE COMPUTER INPUT MODULE B219954



GIDDINGS & LEWIS PIC 900 120V AC OUTPUT MODULE 502-03641-00



Gidding & Lewis PiC900 502-03642-02R1 *USED*



NEW GIDDINGS & LEWIS PIC900 OUTPUT MODULE MODEL 502-03518-00R4



GIDDINGS & LEWIS PiC900 INPUT ENCODER MODULE 502-03786-00R1



GIDDINGS&LEWIS PiC900,502-03782-00R1,5020378200R1
Customs services and international tracking provided


GIDDINGS LEWIS 502-03550-00R3 PIC900 PROGRAMMABLE COMPUTER INPUT MODULE B219954



Giddings & Lewis PiC900 PiC90 CSM/CPU 502-03853-00R2
Customs services and international tracking provided


GIDDINGS & LEWIS PIC900 INPUT MODULE 502-03548-00R4



GIDDINGS & LEWIS PiC900 INPUT ANALOG MODULE 502-03642-00R1



GIDDINGS & LEWIS PiC900 502-03843-00 PROGRAM COMPUTER MODULE
Customs services and international tracking provided


GIDDINGS & LEWIS PiC900 I/O DRIVER MODULE 502-03657-00R4



Giddings & Lewis PiC900 CPU Module 502-03846-00R3 64K Ram 250 VAC Used



Giddings & Lewis PiC900 Input Module, 502-03605-00R3, 24VDC, 32 pt



GIDDINGS & LEWIS PiC900 I/O DRIVER MODULE 502-03657-00R5



GIDDINGS & LEWIS PiC900 INPUT MODULE 24V 502-03548-00R3



NEW! Giddings Lewis PiC900 ETHERNET TCP/IP 502-04137-00R3
Customs services and international tracking provided


GIDDINGS & LEWIS PiC900 I/O DRIVER MODULE 502-03657-00R8



GIDDINGS & LEWIS PIC900 INPUT MODULE 502-03605-00R3 24V



GIDDINGS LEWIS 502-03552-00R3 PIC900 RESOLVER EXCITATION INPUT MODULE B390771



GIDDINGS & LEWIS PiC900 OUTPUT MODULE 10VDC 502-03518-00R3



NEW,Giddings & Lewis PIC900 TCP/IP M.1016.9694 502-04137-00
From China


GIDDINGS LEWIS 502-03548-00R3 PIC900 PROGRAMMABLE COMPUTER INPUT MODULE B390857



GIDDINGS LEWIS 502-03641-00R0 PIC900 AC 120/240V-AC OUTPUT MODULE B390793



NEW,Giddings & Lewis PIC900 14 BIT ANALOG INPUT M.1016.9544 502-04050-00
From China



GIDDING & LEWIS 502-04137-00R4 PiC900





Gidding & Lewis PiC900 502-03551-00R2 *USED*



GIDDINGS & LEWIS 502-03550-00R3 (PIC900) INPUT (REMAN)



Gidding & Lewis PiC900 502-03551-00R2 *USED*



GIDDING LEWIS pic 900 502-03732-02R2 RSM WITH KEY



New 502-03512-02 Gidding & Lewis M.1016.8879 PiC900 FACTORY SEALED



Gidding & Lewis PiC900 502-03550-00R2 *USED*



GIDDINGS & LEWIS 502-03548-00R3 Input PiC900 *XLNT*



GIDDINGS & LEWIS PiC900 PLC MODULE 502-03512-00R2



Gidding & Lewis PiC900 502-03550-00R2 *USED*



Giddings & Lewis PiC900 Ethernet TCP/IP, 502-04137-00, M.1016.9694 R6



Giddings & Lewis PiC900 Part # 502-03673-00R1 - Fully Functional & Excellent
Customs services and international tracking provided


Gidding & Lewis PiC900 502-03853-20R4 *USED*



NEW! Giddings Lewis PiC900 DeviceNet 502-04157-00R0
Customs services and international tracking provided


GIDDINGS LEWIS 502-03550-00R3 PIC900 PROGRAMMABLE COMPUTER INPUT MODULE B219954



Gidding & Lewis PiC900 502-03642-02R1 *USED*



GIDDINGS & LEWIS PIC 900 120V AC OUTPUT MODULE 502-03641-00



GIDDINGS & LEWIS PiC900 INPUT ENCODER MODULE 502-03786-00R1



Gidding & Lewis PiC900 502-03640-02R1 *USED*



Gidding & Lewis PiC900 Turbo CPU, 502-03638-60





NEW GIDDINGS & LEWIS PIC900 OUTPUT MODULE MODEL 502-03518-00R4



GIDDINGS&LEWIS PiC900,502-03782-00R1,5020378200R1
Customs services and international tracking provided


GIDDINGS & LEWIS PIC900 INPUT MODULE 502-03548-00R4



Giddings & Lewis PiC900 Input Module, 502-03605-00R3, 24VDC, 32 pt



Giddings & Lewis PiC900 CPU Module 502-03846-00R3 64K Ram 250 VAC Used



GIDDINGS & LEWIS PiC900 INPUT ANALOG MODULE 502-03642-00R1