Control speed: Relay control logic is to rely on the mechanical action of the contact to achieve control, low frequency, millisecond level, mechanical contact with jitter.
PLC is controlled by the program instructions to control the semiconductor circuit to achieve speed, microseconds, strict synchronization, no jitter.
Delay control: The relay control system is based on the delayed action of the time relay to realize the delay control. However, the time relay has poor timing accuracy and is affected by the environment. The adjustment time is difficult.
PLC uses the semiconductor integrated circuit as the timer, the clock pulse produces by the crystal oscillator, the precision is high, the adjustment time is convenient, is not affected by the environment.
Ningbo Baocheng Electronics Co., Ltd is a high-tech enterprise for research and development electromagnetic relays and can quantity produce, welcome to contact us.