xO08R2 1SBP260109R1001 ABB 继电器输出扩展模块

1PLC类型

其中MR为继电器类型，MT为晶体管类型，它们的区别是:

1.继电器接的外部电源可以是直流也可以使交流，可直接驱动22v直流负载，晶体管的外部电源只能接直流的，不能直接驱动开关，需要接中继来间接驱动

⒉.继电器类型的开关频率低，而晶体管可以输出高频信号如伺服系统的脉冲输出就使用晶体管类型的PLC。在实际运用中根据需要来选择相应的PLC规格。

2PLC输出端子输出端子介绍

以40端子来说明，输入3组+输出2组=5*40揣子，其中输入端子只有一个公共端S/S，而输出有5个公共端。YO和V1各单独使用com端，V2和Y3共用con2，V4、5、6、7共用com3，v10、11.12、13共用com4，Y14、15、16、17共用com5。

3继电器接线

继电器类型的PLC输出回路如下图，可以使用直流电源和交流电源来驱动负载，不分漏源型输出。继电器型PLC输出回路

工控中常见的输出控制有电机、指示灯、报警器、电磁阀门等，有个能直接与PLC输出端子Y连接，有的则需要中间继电器或者接触器来连接。

这些阀门的输出线为两线制，一根接火线、另一根零线，可直接通过PLC输出端子与电源相接来控制，一般为了保护PLC需添加中继进行连接，通过中继的触点与电磁阀相连。

输出与中继连接

输出与接触器连接4晶体管

晶体管类型的PLC的外部电源必须是直流的，有漏型接法．源型接法与输入的说法刚好相反;晶体管plc输出

除了外部电源与负载电源一致以外的，其他输出不能直接与负载相连接，它的输出端与com斌在没有输出的情况下是半导通状态，接交流负载常导通，这个新手一定注意。它一般通过中继与负载连接，此时的中继为直流类型的的，线圈一定主要正负极。

例如MT类型的PLC控制电机，通过24v直流中继的间接控制接触器。

总体来说，PLC输出信号的接法简单，可以理解PLC的输出就是线圈的两个触点Y和com端，这两个触点接负载的两端即可，我们只要了解PLC的输出类型与负载类型看是否需要通过中继来驱动。

1PLC type

Where MR Is the relay type, MT is the transistor type, their difference is:

1. The external power supply connected to the relay can be DC or AC, which can directly drive 22v DC load. The external power supply of the transistor can only be connected to DC, and can not directly drive the switch

The switching frequency of the relay type is low, and the transistor can output high frequency signals such as the pulse output of the servo system using a transistor type PLC. In the actual application according to the need to choose the corresponding PLC specifications.

2PLC Output terminal This section describes the output terminal

To illustrate with 40 terminals, 3 groups of input + 2 groups of output =5*40 rods, in which the input terminal has only one common terminal S/S, and the output has 5 common terminals. YO and V1 use com terminals separately, V2 and Y3 share con2, V4, 5, 6, and 7 share com3, v10, 11.12, and 13 share com4, and Y14, 15, 16, and 17 share com5.

3 Relay Wiring

The PLC output circuit of the relay type is shown below. Dc power supply and AC power supply can be used to drive the load, regardless of drain-source output. Relay type PLC output loop

Common output controls in industrial control include motor, indicator light, alarm, electromagnetic valve, etc., one can be directly connected with PLC output terminal Y, and some need intermediate relays or contactors to connect.

The output line of these valves is two-wire system, one is connected to the live line and the other is neutral line, which can be controlled directly through the PLC output terminal and the power supply. In general, in order to protect the PLC, a trunk needs to be added for connection, and the solenoid valve is connected through the contact of the trunk.

The output connects to the trunk

The output is connected to the contactor with 4 transistors

The external power supply of a transistor type PLC must be DC and have a drain connection. The source type connection is the opposite of the input; Transistor plc output

In addition to the external power supply is consistent with the load power supply, other output can not be directly connected with the load, its output and com bin in the absence of output is semi-conductive state, connected to the AC load normal conduction, this novice must pay attention to. It is generally connected with the load through a trunk, at this time the trunk is DC type, and the coil must be mainly positive and negative.

For example, a PLC of the MT type controls the motor and indirectly controls the contactor through a 24v DC relay.

In general, the PLC output signal connection is simple, it can be understood that the PLC output is the two contacts Y and com end of the coil, the two contacts can be connected to both ends of the load, we only need to understand the PLC output type and load type to see whether it needs to be driven by relay.

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