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380D45 Datasheet(PDF) 10 Page - List of Unclassifed Manufacturers |
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10 / 12 page Form 859-990514 SOLID-STATE RELAYS DATA SHEET page 10/12 Opto 22 • 43044 Business Park Drive • Temecula, CA 92590 • Phone: (909)695-3000 • (800)321-OPTO • Fax: (909)695-3095 • Internet: www.opto22.com Inside Sales:(800)452-OPTO •Product Support: (800)TEK-OPTO•(909)695-3080•Fax:(909)695-3017 •E-mail:support@opto22.com•FaxBack:(800)474-OPTO Transformer Loads Solenoid Valve and Contactor Loads Careful consideration should be given to the selection oftheproperSSRfordrivingagiventransformer. Transformers aredrivenfrompositivesaturationoftheironcoretonegative saturation of the core each ½ cycle of the alternating voltage.Largeinrushcurrentscanoccurduringthefirst½cycle of line voltage when a zero voltage SSR happens to turn on during the positive ½ cycle of voltage when the core is already in positive saturation. Inrush currents greater than 10 times rated transformer current can easily occur. The following table provides a guide for selecting the proper SSR for a given transformer rating. All Opto 22 SSRs are designed to drive inductive loads such as solenoid valvesandelectromechanicalcontactors.Thebuilt-insnubberineachSSR assures proper operation into inductive loads. The following table is a guide in selecting an SSR to drive a solenoid or contactor. Tips (Continued) Applications Control Current Calculation All Opto 22 DC controlled SSRs have a control circuit consisting of 1000 ohms in series with an LED. Since 3 volts is required to turn on any SSR, the maximum current requiredis(3volt-1volt)dividedby1000ohmswhichequals2.0mA.The1voltissubtracted fromthe3voltsignalbecause1voltisdroppedacrosstheLED.Forhighercontrolvoltages, an external resistor can be added in series with the control voltage to limit the control current. To limit the control current to 2 mA, calculate the external resistor R C = 500 (EC- 3) where E C = the control voltage. The DC control voltage range is 3–32 VDC. To calculate the control current for any voltage within the 3–32 VDC range, use the formula: E C - 1 1000 I C = where R C = zero. With a 5V control signal, I C = = 4 mA. 5 - 1 1000 120-Volt Coils SSR CURRENT RATING SOLENOID CONTACTOR 2-Amp 1-Amp NEMA Size 4 4-Amp 3-Amp NEMA Size 7 240-Volt Coils SSR CURRENT RATING SOLENOID CONTACTOR 2-Amp 1-Amp NEMA Size 7 4-Amp 3-Amp NEMA Size 7 120-Volt Transformers SSR MODEL TRANSFORMER P or MP 120D2 100 VA Z120D10 500 VA 120D3 100 VA P or MP 120D4 250 VA 120D10 or 120A10 500 VA 120D25 or 120a25 1 KVA 120D45 2 KVA 240-Volt Transformers P or MP240D2 200 VA 7240D10 1 KVA 120D3 200 VA P or MP240D4 500 VA 240D10 or 240A10 1 KVA 240D25 or 240A25 2 KVA 240D45 4 KVA 480-Volt Transformers SSR MODEL TRANSFORMER 480D10-12 5-Amp Primary 480D15-12 5-Amp Primary |
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