Is it appropriate for a transistor output PLC to directly drive a 24V DC contactor?

It is not suitable, it is easy to cause the PLC output to burn out, it is recommended that the PLC output be connected to the intermediate relay first.

or a photocoupler to amplify the drive capability before connecting to a DC contactor.

There are generally three forms of digital output points of PLC: relays, transistors and bidirectional thyristors, relay with load current of 2A, general load can be directly connected, excessive load must be installed intermediate relay expansion. The transistor outputs a small load with a small carrying capacity, which is generally used to drive DC 24V small current loads, and slightly larger loads must be equipped with intermediate relays or optocouplers.

The bidirectional thyristor output is only used to drive AC loads, carry current, multi-loop control also reduces the load capacity, and slightly larger loads cannot be directly connected.

It is possible to directly drive a 24V DC relay (200mA or less) with a transistor output PLC.

Direct drive 24V DC contactor is not possible, because the working current of the contactor coil is larger, more than 200 mA.

It is not suitable, the PLC output driving power is limited, and it is easy to damage the PLC. The reasonable design is that the PLC output drives the MHM-01C optocoupler power driver, and the driving power is amplified to drive the 24V DC contactor.

Generally speaking, the output of the PLC is isolated by an intermediate relay. It is feasible for the transistor output PLC to directly drive the 24V DC intermediate relay, and it is not recommended to connect the contactor directly. If you have to connect, look at the output current of the PLC and the energizing current of the contactor.

However, you will be ridiculed as unprofessional.

It is not suitable, and the tube crystal should consider not only the power, but also the pressure resistance value of the tube.

It can only drive DC 24V. Communication doesn't work.

Summary. Transistor PLC output current is generally very small, about ampere, if you use this current to drive a relatively large contactor, the capacity is not enough, then you can add a small intermediate relay, use this ampere current to drive the intermediate relay coil, the intermediate relay contact capacity is generally 5 A, you can use the intermediate relay contact to drive the contactor coil. When you convert it like this, you increase the capacity.

Uh-huh. Inappropriate pro.

The PLC output-driven type has limited power and is easy to damage the PLC. The reasonable design is that the PLC output drives the MHM-01C optocoupler power drive grip teaser, and the driving power is released to drive the 24V DC contactor.

The output current of transistor PLC is generally very small, about a safe, such as a noisy limb to use this current to drive a relatively large contact companion, the capacity is not enough, then you can add a small intermediate relay, with this ampere current to drive the intermediate relay coil, the intermediate relay contact capacity is generally 5 amperes, you can use the intermediate relay contact to drive the contactor coil. When you convert it like this, you increase the capacity.

How does the PLC transistor output drive the bending rate contactor? Hello dear, if the power is possible, you can use the transistor output type PLC. If the power is not sufficient, then a transistor output type plus a solid state relay will suffice.

The PLC bidirectional thyristor output circuit can only drive AC loads, and the response speed is also faster than that of relay output circuit form, and the service life is longer. The drive capacity of the bidirectional thyristor output is less than that of the relay merger. Hope it helps.