What is a Type 2 Safety Light Curtain？

Type 2 safety light curtains meet PL c (performance level) in the international safety standard ISO 13849-1 and SIL 1 (safety integrity level) in IEC 61508, and are suitable for medium-risk applications. These standards ensure that the equipment can protect personnel safety under limited conditions.

Type 2 safety light curtains are generally used in mechanical equipment with low operating frequency and low danger, such as some automated assembly lines, material handling equipment or light mechanical processing equipment. In these occasions, the risk of accidents is low and Type 2 light curtains provide sufficient protection.

Compared with Type 4 safety light curtains, Type 2 safety light curtains usually have a larger beam spacing, so the detection accuracy is lower, which is suitable for the detection of larger objects or human parts, but not for delicate operations.

The response time of Type 2 safety light curtains is usually slightly longer than that of Type 4 light curtains, which means that it is suitable for relatively low-risk environments and does not require very fast detection and response.

Such as small automation equipment, light packaging machinery, and simple conveyor systems.

Suitable for situations where operators need to occasionally contact mechanical equipment, but the risk of the machine is not high.

Such as cargo sorting and handling systems, where the approach of personnel will not directly lead to serious consequences.

Like all safety light curtains, Type 2 safety light curtains consist of a transmitter and a receiver. The transmitter emits a series of parallel infrared beams, and the receiver receives these beams. Once an object or person enters the protection area covered by the beam, the beam is blocked. After the receiver detects this change, it will send a signal to the control system, triggering the equipment to stop operation or take other safety measures.