Beckhoff CP62xx panel PC

Attention: Both RS485 and RS422 modules provide electrical isolation, and the RS485 module is factory configured with half duplex, no feedback, and terminal resistance on; The RS422 module is full duplex, with feedback enabled and terminal resistance enabled. Users can adjust the settings according to the actual bus topology.

Installation and grounding: the foundation for ensuring reliable operation

3.1 Opening and installation of control cabinet

CP62xx adopts a clamping rod installation method, which does not require drilling holes on the equipment. The size of the opening varies depending on the size of the display screen (specific dimensions need to be downloaded from the Beckhoff official website). Requirements for installation:

Wall thickness: The standard panel is 1-5 mm, and the stainless steel front panel model is 1-3 mm.

Leave at least 5 cm of ventilation space above and below.

Avoid direct sunlight on the screen and place the screen at the optimal line of sight for the operator.

Installation steps:

Insert the device into the control cabinet opening from the front.

On the back of the device, rotate the four clamping rods outward by 90 degrees.

Use a 3.0 mm hex wrench to tighten the clamping rod (not requiring a large torque) to ensure a tight fit between the front frame of the equipment and the cabinet door, ensuring an IP65 seal.

3.2 Protective Grounding and Functional Grounding

Protective Grounding (PE): Low impedance grounding is achieved through Pin 4 (Φ symbol) of the power socket. This is to prevent dangerous contact voltage in the event of insulation failure. The PE pin of the power socket must be connected to the central grounding point of the control cabinet using a wire with a cross-sectional area of not less than 1.5 mm ².

Functional grounding (FE): There is a dedicated grounding bolt at the rear of the device (see Fig.27). The bolt must be connected to the grounding point of the control cabinet using a wire or flat conductor with a cross-sectional area of at least 10 mm ². Functional grounding is key to ensuring electromagnetic compatibility (EMC) - failure to connect functional grounding may result in communication errors or crashes of equipment due to electromagnetic interference. CP62xx meets the EN 61000-6-2 (immunity) and EN 61000-6-4 (radiation) standards, provided that the functional grounding is correctly connected.

Power connection and UPS configuration

4.1 Main power supply wiring

Pin definition of CP62xx 8-pin power socket (see Table 11):

Pin 5:0 V (negative pole of main power supply)

Pin 6:+24 V (positive pole of main power supply)

Pin 1: - BAT (Negative pole of external battery pack)

Pin 2:+BAT (positive pole of external battery pack)

Pin 3: 24 V UPS output (2.5 A, compatible with battery pack)

Pin 4: Protective Grounding PE

Pin 7: PC-ON input (0 V=power on, 24 V=normal shutdown)

Pin 8: Power Status output (24 V=system completely shut down, load capacity 0.5 A)

Wiring requirements:

The maximum cross-sectional area of the wire is 1.5 mm ².

It is recommended to use a 1.5 mm ² cable for long-distance power supply to reduce voltage drop; The voltage at the power plug of the device shall not be lower than 22V.

The minimum temperature resistance of the power cord is 70 ° C.

A 24 V power supply that meets PELV requirements must be used, and PE and 0 V must be equipotentially connected in the control cabinet.

The use of PC-ON signal: Under normal circumstances, PC-ON should be connected to 0 V (or suspended, internally pulled down)? Actually requires 0 V startup). If remote normal shutdown is required, 24V can be sent to the PC-ON pin through a switch. After the system shuts down, the Power Status output changes from 24 V to 0 V, which can be used to disconnect the main contactor. This method can avoid data loss caused by directly cutting off the 24V power supply and extend the lifespan of the UPS battery.

4.2 External UPS and battery pack

If the device is equipped with integrated UPS function, it needs to be connected to the Beckhoff C9900-U330 battery pack. When wiring, connect the+BAT and - BAT of the battery pack to Pin 2 and Pin 1 of the power outlet, respectively. At the same time, the 24V main power supply can also be connected to the battery pack first, and then supplied to the equipment by the battery pack (see wiring diagram Fig.23 for details). UPS configuration requires installing the Beckhoff UPS software components in the operating system and selecting "Beckhoff P24Vxxxx" and COM4 port in the UPS configuration tool. After proper configuration, when the main power supply is cut off, the device will automatically switch to battery power and perform a normal shutdown of the operating system according to the set time.

Warning: Only use Beckhoff original battery pack C9900-U330, incorrect type may cause fire or explosion. Do not let the battery supply power for a long time when the main power is disconnected; Frequent reliance on battery shutdown every day can significantly shorten battery life.

Maintenance and replacement of vulnerable parts

Beckhoff recommends regularly replacing the following components to ensure long-term reliability (Table 32):