Safety relays are used to control automated low-voltage electrical circuits.

Safety control relays are an electrical control device, which is an electrical appliance that causes the controlled quantity to undergo a predetermined step change in the electrical output circuit when the input quantity (excitation quantity) changes to meet the specified requirements. It has an interactive relationship between the control system (also called the input loop) and the controlled system (also called the output loop). Usually used in automated control circuits, it is actually an "automatic switch" that uses a small current to control the operation of a large current. Therefore, it plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit.

1) The safety relay cannot be cross-connected with other controllers. Terminals Y1, Y2, 5, 6 and 7, 8 are all non-voltage terminals.

2) Ensure that the output connected to the safety relay does not exceed the rated switching current.

3) Ensure that the device is directly connected to the safety relays for machinery circuit, or ensure that the downstream control is also in dual-channel (redundant) mode.

4) If the equipment fails or is visible damage, immediately stop the power supply of the safety relay control loop.

5) The safety relay in transformer is a non-explosion-proof product and cannot be used in flammable and explosive situations.