WMZT1C02

WMZT1C02

WMZT1C02

WMZT1C02

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。

CJ1W-PRM21   5 

150-F85NBD数量4面价21898

25B-D6P0N114   面价5826   1

7NG3214-0NN00   3

3RW4446-6BC44   1

A12-30-10   10

UA75-30-00   10

UA63-30-00   10

A185-30-10   5

AF580-30-11   2

771-16STN    4

S-G01-C5-GRZ-D2-32  1

EVS9324-ESV004

E84AVSCE7524VX0

E84AVSCE3024VBS

E84AVSCE7514VB0

E84AVSCE1524VB0

C200-024-00041A

C200-054-000270A

C200-034-00056A

M400-024-0018A

NOC-S1024-2MD

TRD-NH600-RZ

E80H30-1024-3-N-24

TS2651N41E78

SK 200E-182-340-A-WHT

G9SE-221-T30

6GK1704-1PW08-1AA0 1个

Spirent SmartBits GX-1421A

AifaNova 27-70h            1

120-2TE21-8AA3 

140DDI35310一块       6144

140DDO35300一块      6949

V600-HAM81   1

BYB50SCH ( 不要中国制造 ）  2

VVF53.200-450K   2    

FRN3.7G1S-4C   2

JWAK-300S24   2

X20CS1030        1

SFCF0512H1BU2TO-C-MS-527-L28           2

170PNT11020           2

170OPNT11020       2

6ES7214-2BD23-0XB8          1--------

SM-2556           1

XT-DTU-V2.0           5

GYB-MDD95-22-N1B         1

BGK-6850A          3

BGK-6860          1

MB908          1

TSX-CAP030             4

条码扫描枪，霍尼韦尔/Honeywell，1991i?SR，5把

PLC ZNDQ-100   ZNDQ03020101     1

Rittal    8617.663 这款4个

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