It has been a long time coming but I am finally putting together a controller and building a RIM unit. I have gotten everything put together but think I may have picked up the wrong SSRs. I currently have a Watlow 988
which the following output specs:
• Solid-state relay, 0.5A @ 24VÅ (ac) min., 253VÅ (ac)
max., opto-isolated, burst fire. With or without contact
I also picked up a couple OPTO22 SSRs
which has the following specs:
Nominal AC Line Voltage
Nominal Current Rating (Amps)
1 cycle Surge (Amps) Peak
Nominal Signal Input Resistance (Ohms)
Signal Pick-up Voltage
85 VAC (280 allowed)
Signal Drop-out Voltage
Peak Repetitive Voltage Maximum
Maximum Output Voltage Drop
Off-State Leakage (mA) Maximum
Operating Voltage Range (Volts AC)
I2t Rating t=8.3 (ms)
I am planning to use the SSR to control a LD 5500w/240v element running on 120v drawing ~12 amps.
My question is if the controller can switch the SSR since the signal voltage exceeds the output voltage?
Any info would greatly be appreciated.