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C6320-0020 Beckhoff

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The Beckhoff C6320-0020 is part of the C6 Industrial PC Units series and weighs 4.0 kg in its basic configuration. It features a 24 VDC power supply with a power consumption of 150 W and has two Ethernet ports supporting 10/100 Base-T. The unit includes 3 USB ports, a 9-pin SUB-D RS232 serial interface, and an IP20 protection class.

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Product Description:

The C6320-0020 is an embedded industrial PC produced by Beckhoff within the C6 Industrial PC Units series. Designed for cabinet installation, this compact computer provides deterministic control, visualization, and data collection functions across assembly lines, packaging machines, and material-handling cells. It consolidates CPU, memory, and industrial communication ports into one platform so integrators can execute PLC logic, motion control, and SCADA tasks directly on the factory floor without a separate rack-mount server.

Its electrical profile is anchored by a power supply of 24 VDC; under a 22 V rail the system draws up to 10 A, translating to a maximum internal load of 150 W. Designers should wire the unit with a 1.5 mm² power lead and protect the circuit with a 16 A external fuse to satisfy startup inrush. The housing meets the IP20 class, so it must be installed inside a closed control panel. Communication options include two RJ-45 connectors that support 10/100 Base-T Ethernet for deterministic fieldbus or plant network links, a 9-pin SUB-D RS232 service port, three USB sockets for removable drives or local HMI, and one DVI-I output that sends video to digital or analog monitors.

Mechanical and environmental limits guide mounting choices. The basic configuration weighs 4.0 kg and fits into a footprint of 93 x 196 x 226 mm, making it compatible with shallow cabinets and swing arms. The chassis withstands shocks up to 5 G, 30 ms, so routine transport or occasional machine vibration will not dislodge internal boards. Continuous operation is permitted in relative humidity levels up to 95%, non-condensing, provided condensation is avoided by adequate enclosure ventilation. These physical limits support lifecycle calculations for vibration damping, shelf loading, and cabinet climate control prior to commissioning.

Current Consumption (22 V)
10 A
Dimensions (w X H X D)
93 x 196 x 226 mm
Ethernet Ports
2 x RJ-45
Ethernet Speed
10/100 Base-T
External Fuse
16 A
Humidity Limit
95%, non-condensing
Power Cable Cross-section
1.5 mm²
Power Consumption
150 W
Power Supply
24 VDC
Protection Class
IP20
Serial Connector
9-pin SUB-D
Serial Interface
RS232
Shock Resistance
5 G, 30 ms
Usb Ports
3
Video Interface
DVI-I
Weight (basic Config)
4.0 kg

Frequently Asked Questions about C6320-0020:

Q: How many Ethernet ports are available on the C6320-0020 industrial PC unit?

A: The C6320-0020 features two RJ-45 Ethernet ports supporting 10/100 Base-T connections.

Q: What is the power consumption of the Beckhoff C6320-0020?

A: This unit has a power consumption of 150 W during operation.

Q: How many USB ports are available on the Beckhoff C6320-0020?

A: The C6320-0020 supports three USB ports for peripheral connectivity.

Q: What is the protection class of the C6320-0020 industrial PC unit?

A: The chassis is built to IP20 protection standards, offering basic enclosure protection.

Q: What type of video interface does the C6320-0020 use?

A: A DVI-I video interface is provided for display connectivity requirements.

Symptom Likely cause Corrective action
IPC shows no sign of life after the cabinet is powered up 24 V DC not reaching the PC Verify the ±24 V wiring and connector pin-out; re-power after fixing cabling 
Unit stops in POST – operating system never loads Boot device still set to floppy / CD; BIOS parameters wrong Remove the medium, load BIOS defaults, save & reboot 
TwinCAT runtime starts but the machine doesn’t react Fault is outside the IPC (field wiring, PLC code, or external hardware) Trace I/O in TwinCAT Scope / System-Manager; repair external cause or restore previous project version 
Continuous disk-access errors Damaged disk / CD or failing drive Test medium in another PC; swap HDD/optical drive if errors persist 
Boots erratically, dark screen yet fan & drives spin Internal hardware defect (mother-board, PSU) Replace the C6320 or send to Beckhoff Service for board level repair 
System clock resets or BIOS warnings on power-up Lithium battery on the motherboard is empty Power-down, replace CMOS cell with same type, dispose of old cell safely 
IPC overheats and shuts down while cabinet temperature is high Ambient exceeds spec (0 … 55 °C) or ventilation slots blocked Improve cabinet airflow or add forced cooling to stay within spec 
IPC will not restart immediately after a controlled shutdown Internal PSU latch requires ≥ 10 s discharge time Wait > 10 s before re-applying 24 V, or fit a timed restart relay 
LINK/ACT LEDs dark – no EtherCAT/ LAN communication Network cable, switch-port or IPC NIC disabled Check RJ-45 leads & switches; confirm LEDs (green = link) then re-enable NIC in Windows Device-Manager 
“No bootable device” after service work SATA / power ribbon or PCI cards left un-seated during maintenance Power-off ≥ 24 V, reseat all internal connectors and cards before rebooting 
Model Dimensions W × H × D (mm) Weight (kg) Built-in storage Fanless?
C6320-0020  93 × 196 × 226 4 HDD (standard, replaceable) No (uses system fan)
C6325-0020 133 × 196 × 226 6 Flash-disk (no moving parts) No
C6330-0020 107 × 196 × 226 4.6 HDD (standard) No
C6335-0020 147 × 196 × 226 6.6 HDD + Slim CD-ROM Yes – large heatsink allows passive cooling to 45 °C 
C6340-0020 134 × 196 × 226 4.5 n/s (HDD as supplied) No
C6350-0020 148 × 196 × 226 5.1 n/s (HDD) No
BIOS/POST beep pattern (error code) What it means
1 short beep DRAM refresh failure – memory can’t be refreshed 
2 short beeps Parity-circuit failure in system RAM 
3 short beeps Base 64 KB RAM failure (first memory bank) 
4 short beeps System-timer failure on the motherboard 
5 short beeps Processor failure detected during POST 
6 short beeps Keyboard-controller / gate A20 failure 
7 short beeps Virtual-mode exception error (CPU) 
8 short beeps Display-memory read/write failure (video RAM) 
9 short beeps ROM-BIOS checksum failure – corrupted BIOS code 
10 short beeps CMOS shutdown-register read/write error 

Internal Product Review

  • ‘‘The C6320-0020 is a Beckhoff industrial PC unit with a 24 VDC power supply and IP20 protection. Dual RJ-45 Ethernet ports with 10/100 Base-T support make network integration straightforward in control cabinets. A 150 W power rating rounds out a capable platform for reliable industrial computing.’’

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