自己加裝變頻器引起的電機發(fā)熱或者燒毀，由于不明原因，用戶往往把原因往往歸結(jié)在電機的質(zhì)量問題上，事實上，這些貌似電機的故障其實都不是電機本身的原因，大多是變頻器調(diào)試的不規(guī)范或者是非變頻電機當變頻電機使用等原因造成的，主要有以下幾種情況： 1、把普通電機當變頻電機使用。由于普通電機散熱風扇跟轉(zhuǎn)軸連在一起，當用變頻器調(diào)速時，轉(zhuǎn)速不穩(wěn)定，達不到電機的額定轉(zhuǎn)速，散熱風扇不能發(fā)揮正常作用，引起電機散熱不好；再加上普通電機不是按變頻要求設計，從而使電機發(fā)熱或者燒毀。 2、變頻電機和變頻器不經(jīng)過調(diào)試就直接連在一起使用。變頻器控制電機常用的兩種方式是矢量控制和V/F曲線控制，每種控制方式都要首先將電機的類型（同步、異步、有無編碼器）、電機額定功率、額定電壓、額定電流、轉(zhuǎn)速或者極數(shù)、額定頻率、高運行頻率、電機起動停止的加減速時間、變頻器控制電機的保護方式以及保護比例系數(shù)、載波頻率等設定好，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
