1756-L61
1756-L61
1756-L61
6SL3210-1SE27-0UA0 1
EBC/ESP62/14 40RJ 10
A5E01105817 5
6ES7531-7QF00-0AB0/6ES7531-7KF00-0AB0 28
RAIO-01 1
6ES7232-4HB30-0XB0 个 4
6EP4132-0GB00-0AY0,3个
1746-A10 面价10462 2
6ES7132-6BD20-0BA0 20
5069-L320ERS2 2 面价36800-------
XPSATR11530P 5
FI830F 1
TB55713DB1T20 ~14PH 2
FBM224 1套
FBM230 1套
6ES7331-7RD00-0AB0 5 --------
6ES7332-5RD00-0AB0 3-------
JCU-11 1
ACS580-01-018A-4 7.5KW 1
ACS880-01-12A6-3/5.5KW 1
ACS355-03E-08A8-4 4KW 2
ACS880-01-293A-3+P944 2
ACS880-01-169A-3+P944 2
ACS880-01-017A-3+P944 2
6RA2475-6GV62-0 1----------
6ES7315-2AH14-0AB0 1-------
6ES7331-7KF02-0AB0 28个--------
1756-PA75 1 面价14129
ABB紫外光源 746931 CEMS污染物NOX测量模块紫外光源
6ES7288-3AQ04-0AA0 20台
6AV2124-1JC01-0AX0 1-------
TSXCUSB485 1
TSXCRJMD25 1
6SL3040-1NB00-0AA0 1个 -------
6ES7155-6AU01-0CN0 4
6ES7513-1AL02-0AB0 1
1585-C8HB-S600数量4 28678
6RA8013-6DV62-0AA0 1-------
6ES7414-5HM06-0AB0 2-------
A06B-622-H037 1
A06B-6222-H037----------
HD9MS-A069-0040-400000 2个-------
S10TS230230E5 4
590C-2700530100000 2
317-2EK14-0AB0 1
953-8LM20-0AA0 1
EH10-DI-001 2
EH10-AO-001 1
2、 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。
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