# Dobot CR20A

Hardware · `CR20A` · verification: source checked

The Dobot CR20A is a collaborative robot with a 20 kg payload and a 1,700 mm working radius. It has a maximum TCP speed of 2,000 mm/s and repeatability of ±0.05 mm. It supports PROFINET and EtherNet/IP communication for connection to a PLC.

## Specification

| Property | Value |
|---|---|
| Category | collaborative robot |
| Axes | 6 |
| Payload | 20 kg |
| Reach | 1700 mm |
| Repeatability | 0.05 mm |
| Weight | 73 kg |
| Max TCP speed | 2000 mm/s |
| IP rating | IP54 |
| Operating temp min | 0 °C |
| Operating temp max | 50 °C |

### Joints

| Name | Range min (°) | Range max (°) | Max speed (°/s) |
|---|---|---|---|
| J1 | -360 | 360 | 120 |
| J2 | -360 | 360 | 120 |
| J3 | -165 | 165 | 150 |
| J4 | -360 | 360 | 180 |
| J5 | -360 | 360 | 180 |
| J6 | -360 | 360 | 180 |

## Connected

- Manufacturer: [Dobot](https://machineschema.com/manufacturer/dobot.md)
- Protocols: [EtherNet/IP](https://machineschema.com/protocol/ethernet-ip.md), [PROFINET](https://machineschema.com/protocol/profinet.md)

## Safety

- When overloaded, the robot automatically sounds an alarm.
- Electromagnetic brake protection reduces the end tool drop distance at power failure.

## Study notes

- Dual-channel end effector design allows direct connection to multiple end tools.
- Visual status indicator at the base shows operating status.
- 24 digital I/O ports support PNP and NPN switching.
- I/O ports include 2 connectors for RS485/AI, 2 x DO, and 2 x DI.
- I/O power is 24 V, rated 2 A, maximum 3 A.
- Cable length to the controller is 6 m.
- Installation orientation is upright.
- Materials are carbon steel, aluminum alloy, and ABS plastic.
- Noise level is ≤ 70 dB.

## Sources

1. [CR20A Collaborative Robot](https://www.dobot-robots.com/products/cra-series/cr20a.html) (accessed 2026-10-26)

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