sharp SSR 1-S202S02 phase - phase 230V

Design guide

In order for the SSR to turn off, the triggering current (lF) must be 
0.1mA or less.
When the input current (IF) is below 0.1mA, the output Triac will be in 
the open circuit mode. However, if the voltage across the Triac, VD, 
increases faster than rated dV/dt, the Triac may turn on. To avoid this 
situation, please incorporate a snubber circuit. Due to the many 
different types of load that can be driven, we can merely recommend some 
circuit vales to start with: Cs=0.022µF and Rs=47Ω. The operation of the 
SSR and snubber circuit should be tested and if unintentional switching 
occurs, please adjust the snubber circuit component values accordingly.

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Particular attention needs to be paid when utilizing SSRs that 
incorporate zero crossing circuitry. If the phase difference between the 
voltage and the current at the output pins is large enough, zero 
crossing type SSRs cannot be used. The result, if zero crossing SSRs are 
used under this condition, is that the SSR may not turn on and off 
irregardless of the input current. In this case, only a non zero cross 
type SSR should be used in combination with the above mentioned snubber 
circuit selection process.