Relays FAQ

 SSR load current is greater than the rated switching current, which causes permanent short-circuit relay, you should use a larger rated current SSR.

Solid State Relay FAQ

A relay constantly open

1) Load current is greater than the rated switching current SSR, it would be a permanent short-circuit relay, you should use a larger rated current SSR.

2) in which the ambient temperature in the relay, for the current exposure is as poor heat will damage the semiconductor device, you should use a larger or more efficient heat sink.

3) Line voltage transients caused by penetrating SSR output section, you should use a higher rated voltage SSR or provide additional transient protection circuitry.

4) of the line voltage is higher than the rated voltage of the SSR.

2, cut off only after input SSR

SSR should be disconnected at the time, measure the input voltage, if the measured voltage is below the voltage must be released, indicating that the release of the breaker voltage is too low, replace the relay if the measured voltage is higher than the SSR must release voltage, it is SSR input of the front of the line in question, must be corrected.

3, the relay does not turn

1) should be turned on when the relay, measure the input voltage if the voltage is lower than the operating voltage must be that the previous input line SSR problems; if the input voltage is higher than the operating voltage must be, check polarity and when necessary be corrected.

2) measuring the input current of SSR, if no current, the system open SSR, the relay has failed; if there is a current, but less than the value of the relay operation, the SSR in front of the line in question, must be corrected.

3) Check the SSR input section, measuring the voltage across the SSR output, if the voltage is less than 1V, indicates that the relay line or load outside the open and should be repaired; if the line voltage, the load circuit may be, to cause excessive current relay failure.

4, the relay work irregular

1) Check that all wiring is correct, the connection is not strong or incorrect fault generated.

2) Check the input and output leads are together.

3) For very sensitive SSR, noise is coupled to the input terminal and can cause irregular conduction.

5, AC motor or solenoid load causing fibrillation

Since alternating dv / dt of the problem, SSR fluctuations can have a half weeks, this time, using the buffer is helpful.

东莞市金禄电子有限公司

地址:中国广东省东莞市东坑镇井美168工业区7号(镇政府对面)

电话：0769-38893108/89290122

传真：0769-83887323

联系人：龙金禄Email：ygnh32@163.com

主营产品：电磁铁 电磁铁厂家