A20B-3300-0472电路板
A20B-3300-0472电路板
A20B-3300-0472电路板
数字量信号连接应注意的问题
变频器的输入信号中包括对运行/ 停止、正转/ 反转、点动等运行状态进行操作的数字量输入信号(开关型指令信号),这些信号常来自PLC 的数字量输出信号。PLC 通常利用其内部的继电器接点(继电器输出型P L C )或具有开关特性的元器件(晶体管输出型PLC)与变频器相连,得到运行状态指令,如图1 和图2 所示。在进行数字量信号的连接时应注意:
(1)使用继电器输出型P L C 与变频器相连时,应注意接触不良常带来变频器误动作,因此在实际接线中要注意连接可靠。
(2)使用晶体管输出型P L C 与变频器相连时,应注意晶体管本身的电压的高低、电流的大小等限制条件在其范围内,保证系统的可靠性。
(3)设计变频器的输入信号电路时,应尽量避免采用继电器等感性负载,因继电器开闭产生的浪涌电流可能引起变频器的误动作。
(4)当P L C 输出的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之间的串扰,应注意对P L C和变频器分开接地,避免两者使用共同的接地线。
SGDV-30D01A-OY
SGMGV-30DDA6H
SGDV-50D01A-OY
SGMGV-44DDA6F
SGDV-210D01A
SGMGV-55DDA6F
SGDV-260D01A
SGMGV-75DDA6F
SGDV-280D01A
SGMGV-1ADDA6F
CIMR-AC4A0139AAA 各2
440R-N23126 数量11 面价1767
CIMR-JB4A0005BBA
CIMR-AB4A0038FBA
CIMR-JB4A0002BBA 各1
ABB ACS880-304-0820A-7+A018+C183 2
ABB ACS880-01-246A-3+D150+J400+P922 2
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6DD1684-0BH1 1
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266HSHESBB7 1
2198-D012-ERS4 新面价:33596 15个
6GK5408-8GS00-2AM2 2 台
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20F11NC043JA0NNNNN 1 29075
功率模块ATV1200C 700/045
横流式冷却风机 GFS680-230 400W 380V
柜顶风机 ATV1200C-D5000049 各1
SKR1MCB1PF755 1 21年面价8690
YOKOGAWA SBSD SBSD
YASKAWA ELECTRIC USADED-45-YR14 USADED45YR14
YASKAWA ELECTRIC JANCD-SV02C JANCDSV02C
YASKAWA ELECTRIC JANCD-SV02B JANCDSV02B
YASKAWA ELECTRIC CIMR-H110B.D-10 CIMRH110BD10
WHEDCO MTR-3S86-G-R-0-E-S MTR3S86GR0ES
VEE ARC 931-048 931048
TYCOR PTYSXTY480YEDRSX PTYSXTY480YEDRSX
TYCOR PTY-H-277/480-PD-4XTS PTYH277480PD4XTS
TRIDIUM INC WEB-545I-AX WEB545IAX
TREND IQ3-4002K4096 IQ34002K4096
TRANSTECTOR ACP100BW ACP100BW
TEXAS INSTRUMENTS PLC VPU210-3105 VPU2103105
TELEMECANIQUE ATV-452D15 ATV452D15
TB WOODS DVC51000AXN0BG DVC51000AXN0BG
TAYLOR ELECTRONICS 6214BZ10110 6214BZ10110
TAYLOR ELECTRONICS 6205BZ10000K 6205BZ10000K
TAYLOR ELECTRONICS 6205BZ10000 6205BZ10000
SUPERIOR ELECTRIC MX2000-2 MX20002
STROMBERG SAFT-101-C0N SAFT101C0N
SQUARE D SED362000LSGET1A8 SED362000LSGET1A
SQUARE D MHL36600-1021 MHL366001021
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SIEMENS 1PH7107-2HD03-0BA3 1PH71072HD030BA3
SIEMENS 1GG5-162-0WX40-6HV3-Z 1GG51620WX406HV3
SICK OPTIC ELECTRONIC LMS-200-S60 LMS200S60
SCHWEITZER ENGINEERING SEL-121F-X-4256MHNB SEL121FX4256MHNB
RELIANCE ELECTRIC FLEXPAX3000 FLEXPAX3000
RELIANCE ELECTRIC DDM-019X DDM019X
RELIANCE ELECTRIC B/M-60001-1 BM600011
RELIANCE ELECTRIC B/M-60001 BM60001
RELIANCE ELECTRIC 86466-87T 8646687T
RELIANCE ELECTRIC 86466-87R 8646687R
RELIANCE ELECTRIC 57C-435A 57C435A
RELIANCE ELECTRIC 57C-435 57C435
RELIANCE ELECTRIC 45C-203 45C203
RELIANCE ELECTRIC 10P8171 10P8171
RELIANCE ELECTRIC 0-57435-G 057435G
RELIANCE ELECTRIC 0-52837 052837
RELIANCE ELECTRIC 0-52501-1 0525011
PANASONIC YB-020UDD YB020UDD
NEMATRON CORP ICC-8L6-HS1-850 ICC8L6HS1850