描述
变频器（故障现象：上电无显示）经检测发现电源主回路、充电电阻、主回路接触器都正常，因此确定为开关电源板故障。按照上述维修步骤对开关电源板进行测量。在进行第一步测量时，发现直流母线560V到PWM调制芯片之间的的330KΩ/2W的降压电阻损坏，标称330KΩ/2W的电阻，实际测量值达2MΩ以上，因此PWM调制芯片得不到启动的电源，所以无法起振工作。为谨慎起见又检测了开关管、变压器、整流二极管及滤波电容等关键器件，在确定没问题之后上电试验，OK！开关电源起振，输出各组电压正常，装回变频器后开机试验正常
FANUC M6iB ROBOT, SYSTEM R-J3iB,05B-1219-B602,PENDANT
FANUC R-J3C COMPACT, INNOVATIVE WAFER TRANSFER ROBOT
YASKAWA WAFER ROBOT ERCR-SS26-C002,XU-RC355S-A00,XU-ACT
EQUIPE PRI ROBOT ATM-105-1-S-CE, PRE-300B-CE,ESC-212B
HITACHI Z-8270 ATOMIC ABSORPTION SPECTROPHOTOMETER
POLARIZED ZEENMAN
BROOKS AUTOMATION 001-6605-01 CONTROLLER
AE,ADVANCED ENERGY PE-5000 PLASMA POWER RF GENERATOR
VARIAN MATCHING NETWORK CONTROLLER 04-7051186-05,705734
KOKUSAI ULTRASONIC GENERATOR 1.2K,1Mhz,UO1200MCA IMTEC
RFPP RF30S,30S 3KW PLASMA RF POWER GENERATOR
TOSHIBA YAG LASER UYD-A8300,LAY-203FA-6AG,HVD DRIVER
LAMBDA EMI VARIABLE DC POWER SUPPLY ESS 300-33-2-D-0806
KLA TENCOR DIGITAL DEFLECTION GENERATOR 701-603180-003
POSITRON ORISIS 800309/2 800365/2 800520/2 800331
LUCENT TECHNOLOGIES PSAX 2300 MEDIA GATEWAY -48V DC
