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变频器的输入信号中包括对运行/停止、正转/反转、微动等运行状态进行操作的开关型指令信号。变频器通常利用继电器接点或具有继电器接点开关特性的元器 件(如晶体管)与PLC)相连,得到运行状态指令,如图1所示。 在使用继电器接点时,常常因为接触不良而带来误动作;使用晶体管进行连接时,则需考虑晶体管本身的电压、电流容量等因素,保证系统的可*性。在设计变频器 的输入信号电路时还应该注意,当输入信号电路连接不当时有时也会造成变频器的误动作。例如,当输入信号电路采用继电器等感性负载时,继电器开闭产生的浪涌 电流带来的噪音有可能引起变频器的误动作,应尽量避免。图2与图3给出了正确与错误的接线例子。 当输入开关信号进入变频器时,有时会发生外部电源和变频器控制电源(DC24V)之间的串扰。正确的连接是利用PLC电源,将外部晶体管的集电极经过二极 管接到PLC。如图4所示。
HONEYWELL TP970B 2002 60-90F
FANUC A06B-6044-H008
FANUC A06B-6044-H308
ALLEN BRADLEY 1326AB-B520E-21-K5
WARNER 9540-3106
DRESSER A2RF-14L
WANDFLUH BE4Z10A
FANUC A97L-0218-0249/110E-46
系统运行中HMI显示画面如下 :
CUTLER HAMMER ECL03F8D3A
MAGNETROL 039-5000-600
ABB 3HAC17484-10/03
ABB ACS601-0060-5-000B1200000
ALLEN BRADLEY 1771-P7
CUTLER HAMMER S811T30N3S
SONY MPF920-F
ALLEN BRADLEY 1326AB-C2C-11
ALLEN BRADLEY 2090-XXNPMF-16S07
JOYCE DAYTON WJ51UTN
HOFFMAN A12106CHAL
SCHNEIDER MM-PMC2400C
VAISALA WAA151
FISHER R95HX000072
OLYMPUS SZX-ZB9
ACTION G428-0001
SMITEC KZ100055
ABB S201-C6
VALMET M851006
FANUC A06B-6044-H008
EATON XTCE750N22A
MICRO MOTION F200S341CCAAEZZZ
SIEMENS 7PU4620-2BN20
ARO 666053-388
FANUC A06B-0642-B005
◆人性化的编程软件,给客户编程工作带来了极大的方便。
HONEYWELL FYQLA1-140R-3
ALLEN BRADLEY 1761-NET-AIC
ALLEN BRADLEY 1734-AND
MEASUREX 05372600/D
FANUC A06B-6127-H202
SQUARE D 8803-P00C04M DRIVE
SCHRADER 035367521
ALLEN BRADLEY 1394C-AM75
GE FVK465RT
HONEYWELL 46182880-501
MITSUBISHI MR-J4-20B
PT-65-R14VAI
631A01TNEH
ATI F12 GAS
ALLEN BRADLEY 1785-L40E
GENERAL ELECTRIC DS3815PRDB1H1A
INDRAMAT HVE03.2-W030
SQUARE D SY/MAX 8030-RIM131
SEW MDX61B0110-5A3-4-00
SIEMENS 6BK1000-8AE10-0AX0
WESTINGHOUSE NL-323
SIEMENS 3RG7848-3CK
1756-HIST1G
ABB 3HNE-08250-1 3HNE08250-1
ALLEN BRADLEY 1395-B72-C2-P10-P50
VALMET M851231
GENERAL ELECTRIC DS3815PCBA1C1A
ALLEN BRADLEY 150-A35JBDD-8B4
VALMET M851231
SIEMENS 6ES7 318-3FL01-0AB0
ALLEN BRADLEY 2364-SPE11A
BARBER-COLEMAN A-60055-0-1
TEL-TRU GT500R
RELIANCE ELECTRIC 86466-74RC
MEASUREX 05346100/B
URB NJ421MC5
RAPID AIR CORP. 69100027
HOFFMAN A-424212WFLP
RELIANCE 770.91.20
SICK DML40-2-1211
HUBNER TG63/5-1000
CONTROL MHM-8500-CBNS-0000
ALLEN BRADLEY 1770-T12
RELIANCE 920FK0042
YASKAWA CIMR-VU4A0004GAA
GE FANUC IC693CHS399E
(2) JT3-11/1型号的时间继电器的辅助接点导致电气故障经常发生的一个主要点,如机构故障、接点接触不良故障,检修起来非常烦琐;
ALLEN BRADLEY 1771-NBV1
FANUC A06B-0371-B610#7076
INTERNATIONAL C03-0866
TURCK NI 10-G18-AP6X-B1341
GE CR115E402101AT
SICK LUT1-400
TOYOPUC THK-2790
ABB DSQC 326
FANUC A06B-6112-H011
HONEYWELL 05325100
ABB KRPD42222MS
GE 9F62KED300
GENERAL DS3800NPSL1A1A
INDRAMAT MAC112D-0FD-3C/130-A-2/S018
ALLEN BRADLEY 2711-T10C8L1
SPECTRUM WSP3.25-630
CINCINNATI 3-424-1994A
ALLEN BRADLEY 1336-B007-EAD-S1
FISHER 289H-43
DAGE-MTI INC. 732986-05
ACTION G428-0001
QUINT-PS-3X400-500AC/24DC/10
FANUC A06B-6044-H308
NISSAN 26320-L4500
LOT OF 6 WELLMAN SS1272
BB-HCM531
MITSUBISHI HG-KR13
INDRAMAT RAC2.3-200-460-A00-W1
RELIANCE 920FK0042
ALLEN BRADLEY 1336E-B040-AN-EN-L6
FANUC A97L-0218-0249/110E-46
CONDOR HCC15-3-A
OBARA A-TX30115NR-BB1-275-C
1021146-100
YOKOGAWA F9557HB-04
POST TO LUG POS A52425-2
HONEYWELL DR45AT-1111-00-001-0-30NP00-0
ALLEN BRADLEY 1336-B007-EAD-S1
ABB P-HC-BRC-30000000
DATALOGIC PMC80
ALLEN BRADLEY 2711-T10C3
BARBER-COLEMAN A-60055-0-1
TEXAS 6MT32 16
WIPOTEC 24V/RS485 R-MOT
FANUC A06B-6053-H100
ALLEN BRADLEY 2711-T10C8
ALLEN BRADLEY 2711-KC1X
NORDSON 131739G01
REXROTH HDD02.2-W040N-HD32-01-FW
GENERAL 531X305NTBAPG1
TOSHIBA VT130G9U4330
WILKERSON F30-08-F00
EG&G 502-4507 PS-450DC
THOMSON AT25E 771396/10
IC693MDL655L
REDINGTON B2-5806
HEIDENHAIN LS 101 / 247 217-04
IC693PWR321R
SEW MDR60A0150-503-00
SIEMENS 6SE7032-7EB87-2DA1
HONEYWELL TP970B 2002 60-90F
ALLEN BRADLEY 1771-P7
MITSUBISHI FR-PU02E-1
ALLEN BRADLEY 1336-BDB-SP23D
BALDOR ZD18H402-W
KOLLMORGEN SERVOSTAR606
FANUC A06B-6088-H245
我们改造后的电路简单,使用可靠,维护方便,从2004年6月份投用以来,两部桥式起重机的改造电路故障率为零,节省了大量人力物力,降低了劳动强度,并且每年可节约几万元的材料消耗,解决了多年沥青桥式起重机电气部分频繁故障的一个重大难题。
SIEMENS SINAMICS 6SL3100-0BE28-0AB0
ABB 3BSE016600R1
FANUC A06B-6053-H080
HONEYWELL 621-0020RC
SMC MGQL50-100
HONEYWELL ML7425A3013
FANUC A05B-2020-C141
PFEIFFER TURB TCP380
SIEMENS SINAMICS 6SL3100-0BE28-0AB0
NORDSON 105628
3051S1CD3A2B12A1AB4K5M5
GENERAL TP2020TTR
GENERAL DS3800NPSR1A1A
P-PLUS P-3Y
MICRO MOTION RFT9739E4SUJEZ
PRO-FACE GP577R-SC11
FESTO 159421
SMITEC KZ010225 MARTS3000
BALLUFF BES-519-SP-60-314-N
ALLEN BRADLEY 1394C-SJT05-L-RL
SMC NVBA2100-T03GN
SCHNEIDER INC. PC-E984-255
EATON V200M6CJC
FANUC A06B-0147-B075#7076
YASKAWA CIMR-V7AM22P2
SUNX FD-N500
TURCK Ni35-CP40-FDZ30X2
PARKER 150-19-SA
SCNEIDER TSXP87425
ALLEN BRADLEY 2706-B21J8
SORENSEN DCR150-3B
BOSCH 3842-170-060
CINCINNATI MILACRON 2-655-2035
NEUGART PL70-25
SETRA 2561150PG2M11
REXROTH 571040110
ALLEN BRADLEY 1395-1B-A056-BB1-CB1-LD-AD-SA-DA-D2A-N1B
SIEMENS HDX3B125
HOFFMAN A36SA3210LPPL
MAG F6412-418
ABB NMBA-001
ALLEN BRADLEY 150-C317NBD
SV071G00201200
REXROTH VTS0609-2X/F
BERGER LAHR WDP5-118.05100
TURCK Ni35-CP40-FDZ30X2
VERSA CSG-4222-043-HC-A120
DODGE MR94653
TEXAS 330-37
STI MS4312B-2
SIEMENS 6ES7 953-8LM20-0AA0
MEASUREX 053529-00
CUTLER-HAMMER IBPHFD3040G
FESTO 556812 AXIS EGC-50-100-TB-KF-0H-GK
LOT OF 6 WELLMAN SS1272
YASKAWA JEPMC-TB351
TURCK Ni35-CP40-FDZ30X2
PRO-FACE GP470-EG11
良好的接地是保证PLC可靠工作的重要条件,可以避免偶然发生的电压冲击危害。接地的目的通常有两个,其一为了安全,其二是为了抑制干扰。完善的接地系统是PLC控制系统抗电磁干扰的重要措施之一。在PLC控制系统中,具有多种形式的“接地”,主要有:
MITSUBISHI MR-J4-10B-RJ
ALLEN BRADLEY 42SMP-7011-QD
HONEYWELL 23KM-K218-01
FANUC A06B-6064-H303#H550
SCHNEIDER TSXP5710
SCHNEIDER MM-PMC2400C
THQL115
FANUC 20S A06B-0147-B374#7008
INDRAMAT KDS 1.3-150-300-W1/S104
REXROTH 5351 403 200
PANASONIC FPG-PN4AN
RELIANCE ELE. 57C435
ALLEN BRADLEY 2711-KC1
SCANTRONICS A208120
TURCK WS 4.4T-4
GENERAL DS3800HFXA1F1D
GE FANUC IC693MDL940D
60864/GSM-WA
SIEMENS 5SY5202-7 W/
ALLEN BRADLEY 1326AB-B430G-M2K4L
METTLER TOLEDO XP6002S
MEASUREX 05346100/B
REXROTH 571040110
ABB S201DC-K3
GENERAL ELECTRIC DS3810MMBB1A1A
MAC PR82A-GADA
ALLEN BRADLEY 20BE052A0AYNAND0
SIEMENS 6ES7-221-1BF32-0XB0
ALLEN BRADLEY 160-BA04NSF1P1
ALLEN BRADLEY 800T-2TZ
MAGPOWR C50S1
KOLLMORGEN SERVOSTAR606
FESTO Ci14-M1BH-5LS-1/8
CUTLER HAMMER AF93AG0C005D
TIF 9450D
SIEMENS 6ES7414-3XM05-0AB0
ALLEN BRADLEY 1326AB-B740C-S2L
RMI 814.56.00
GE IC697CPU781-HB
HONEYWELL V5011F 1139 2-WAY
ABB 3HAC 14265-1
LAMBDA SVT3001
PARKER L7652441153B
ALLEN BRADLEY 2711-T10G9
GLOBAL CELL 011273
BERGER LAHR WDP5-118.05100
YOKOGAWA F9557HB-04
CUTLER HAMMER ND312T33W
HONEYWELL 972AB2HM-A3N-L
DATALOGIC MEP-542
EATON KD3400
HONEYWELL M7285A1003
YASKAWA CACR-IR30SFB
MICRO MOTION RFT9739E4SUJEZ
FLEX-CORE FC-200/5-4
DYNAPAR HA62502560X4143
FURON UPM2-688-M
FANUC A06B-6111-H011
ALLEN BRADLEY 1336-BDB-SP50D
QUINT-PS-3X400-500AC/24DC/10
ABB SNAT7640APPLETON ARC1023CD
(4)通过使用屏蔽线和双绞线达到提高噪音干扰的水平。