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PLC RS232串口通信可使用无协议(RS指令)或专用协议与上位机进行通信,本例中使用无协议与上位机进行通信,如图四所示:D8120用于设定PLC通信格式,D50表示发送起始地址,K60表示发送字节数量,D150表示接收起始地址,K20表示接收字节数量。
4、结束语
高压变频器自动旁路柜采用PLC进行旁路逻辑控制,通过在攀钢污水处理厂运行的智光高压变频器模拟故障说明,高压变频器自动旁路柜在从变频转工频,工频转变频的相互切换非常方便,能在10s以内完成,大大提高了水泵运行的可靠性。现场PID闭环控制效果非常理想,水压波动非常小,波动在超过0.1kg时,变频器能迅速调节转速,把水压控制在设定范围内,调节转速时不会产生任何振荡。同时通过PLC与高压变频器控制器的串口RS-232通信,在高压变频器液晶屏上能监视系统管网水压及PLC各种状态量。
HONEYWELL 60130571-002 PC
SIEMENS JD6-3T400 CIRCUIT
MDB SYSTEMS MLSI-DLV11 PC
CUTLER HAMMER HFD3030L CIRCUIT BREAKER SER.C 3 POLE
UNITED ELECTRIC J403-554
SQUARE D 9012-GCW-2
SEALED ALLEN BRADLEY 505-TOD
ALLEN BRADLEY 1785-L40B / E
MARKEM PC BOARD 3312373 REV J 0672531
GOSSEN K***TANTER S126-S-5-EU-20 PC , YB-161-102-BE/1
WOODS J033 ULTRACON SCR
ALLEN BRADLEY 1771-DS
C & D MBC-1971-2 PC
HEIDENHAIN 376 846-E8 ENCODER ROD 426 2500 03S12-03
REPAIRED CUTLER HAMMER 1247 I/O PROFIBUS DP SL***E FOR PANELMATE 87-02009-02
ALLEN BRADLEY 190E-CNEJ2-DC10C-TE
SIEMENS 1HU-105-3-2 TACHOMETER ASSEMBLY 252-02
BALDOR VL3515 ELECTRIC MOTOR RPM 3450 HP 2
SIEMENS CED6N12 TYPE 12 ENCLOSURE
AIR TURBINE TOOLS 2545SVR HAND TOOL LONG VERSION REAR EXHAUST 40,000RPM
KOLLMORGEN AKM21C-EFMN2-01 PM
HYDAC SB330-0.6 BLADDER, ACCUMULATOR SB33006
GE FANUC IC3650SSNE1C
GE POWER AMPLIFIER CARD IC3600APAB1
INOTEC PSU03 POWER SUPPLY E10012
CUTLER HAMMER HMCP070M2 CIRCUIT BREAKER SER. C, 70A, 600VAC, 3 POLE
DODGE DBSC-10 LESS HUB MOTOR BRAKE 025632 230/460 VAC
RELIANCE ELECTRIC 0-52861 GATE
DODGE TIGEAR 3521331 001 RZ REDUCER SIZE RATIO A350B015N000L1 3521331
PARKER L4152910253
REXROTH R412006577
ALLEN BRADLEY 160-BA10NSF1 SPEED CONTROLLER SER.C FRN 7.06
ALLEN BRADLEY 160-BA10NSF1 SPEED CONTROLLER SER.C FRN 7.05
DISPLAY TECHNOLOGIES M1000-100 MONITOR CRT CE793W5P4VJ
R+W TECHNOLOGIES BKL80-43-25-30
TRABON 20SA-10SCL-10S
SQUARE D SYMAX 8030-RIM-126
HONEYWELL 900C53-0142-00 I/O
TELEMOTIVE E7110-1
I/O MODULE REMOTE I/O 1 8 1O 805-772-10 185-255-00
REXROTH 3842518050 AC MOTOR 457727
JAMESBURY SP26SR60-B
ELECTRO CAM 6000 SERIES PS-6400-24-001
EMC CONTROLS A16401
SQUARE D 8501-DSC3
KARL DUNGS INC. EMP-24-1
TDK LH4437S PRINT HEAD 8485SE GH000781A
AIR TURBINE TOOLS 2545SVF HAND TOOL LONG VERSION REAR EXHAUST 40,000RPM