1336-PB-SP17A
1336-PB-SP17A
1336-PB-SP17A
模拟量信号连接应注意的问题变频器中的模拟量输入信号,通常指0~10V/5V 的电压信号或0/4~20 mA的电流信号;这些模拟量输入信号可通过接线端子由外部给定,当变频器与P L C 连接时,这些模拟量输入信号也可来自PLC 的模拟量输出信号,如图3 所示。在进行模拟量的连接时应注意:
(1)阻抗匹配。根据变频器的输入阻抗选择P L C 的输出模块,实现两者的阻抗匹配。
(2)电压范围。当变频器和P L C 的电压信号范围不同时(如变频器的输入信号为0~10V,而PLC 的输出电压信号范围为0~5V 时;或PLC 的一侧的输出信号电压范围为0~10V而变频器的输入电压信号范围为0~5V时),需采用串联电阻的方式进行分压,以保证两者在正常电压范围内
工作,避免电压过限可能损坏器件。
(3)采用屏蔽电缆或绞合电缆。对于变频器和P L C 而言,弱电控制信号(电压0~5V/10V、电流0/4~20mA等)易受到外界强信号的干扰,对控制信号采取适当的屏蔽措施。常用的方式就是采用屏蔽电缆进行屏蔽;对于长距离的控制回路宜采用绞合电缆,绞合电缆的绞合间距尽可能小。
(4)主、控电缆分开布线。实际连线时,注意主、控电缆分开布线,且相隔的距离。以保证主电路侧的干扰及噪音影响不到控制电路。
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
Freestate Electronics Monopulse Beacon Test Set Equipment radar receiver FS-1210
Freqrol AC Spindle Controller FR-SX_FRSX_FR-SX-2-15K_BD625A551H04_ PARTS/REPAIR
Frequency 6.425-7.125GHz
Frequency Devices VX8PFFA-8 Programmable Filter VXI
FRESH AGILENT CALIBRATION WITH CERTIFICATE INCLUDED
FRESH AGILENT CALIBRATION WITH FULL TEST DATA INCLUDED
Fresh calibration for 2 s, 30- LOOK
Fresh Calibration from Agilent
FRESH CALIBRATION INCLUDED
FRESH CALIBRATION WITH CERTIFICATE INCLUDED
FRESH CALIBRATION WITH TEST DATA INCLUDED
Fresh NIST Calibration Done. Certificate Included
Fresh NIST Calibration Done. Certificate Included.
Fresh NIST Calibration for 2 s 30-
Fresh NIST calibration for 2 s 30-
Fresh NIST calibration, 30-
Fresh NIST Calibration, 30-
Fresh NIST Calibration, 30- from Naptech
Fresh NIST Calibration, 30- , Best for Less
Fresh NIST Calibration, 30- , Naptech Test
Fresh NIST calibration, 30- .
Fresh NIST calibration, 30- war., 2 s free cal.
Fresh NIST calibration, 90-
Fresh NIST calibration, 90- , 2 cal.
FRESH NIST CALIBRATION. CERTIFICATE INCLUDED.
Fresh Repair & Test- Reliance Electric HR2000 AC Brushless Servo Drive 3RA2015