MC Series of Micro-controlled Products 1 Micro-Controlled SSR’s Crydom has released a series of SSR’s incorporating Microprocessor controlled functions built in to one package. various Series MCTC Temperature Control Series MCPC Phase Angle Controller •Microprocessor based burst-fire controller / SSR •Ratings from 25A to 90A @ 48-530 VAC •Low-voltage, current, or potentiometer control •Output status indicator •Separate output enable / disable control •Two time-base periods available 2 •Microprocessor based temperature controller / SSR •Ratings from 25A to 90A @ 48-530 VAC •Direct J or K thermocouple input •Voltage or current controlled setpoint •Separate output enable / disable control •Open thermocouple protection •LED status indicators Series MCS Soft-start / Soft-stop SSR •Microprocessor based soft-start / soft-stop controller •Ratings from 25A to 90A @ 48-530 VAC •Low-voltage, current, or potentiometer control •Output status indicator •Adjustable ramp rates Newest MC Series Release Series MCBC Burst Fire Controller •Microprocessor based burst-fire controller / SSR •Ratings from 25A to 90A @ 48-530 VAC •Low-voltage, current, or potentiometer control •Output status indicator •Separate output enable / disable control •Two time-base periods available 3 Common Features to all MC Series Products Each MC version is available with outputs rated 25, 50 and 90 amp, and line voltage ratings of 48 through 530 Vac. (Note that some versions are voltage range specific.) The ultimate application is used to select and apply the desired voltage and current range exactly like a standard SSR. (Heatsinking, derating, etc.) The standard S1 package is used for all versions, keeping the mounting consistent with what our SSR customers are used to. Each requires a very low current unregulated logic supply to provide processor power. (28 to 30 ma at 8 to 32 Vdc.) 4 Typical Specifications (Datasheets) Highlights, Electrical Specs and Part Number Construction 5 Mechanical Dimensions and Derating Curves Series MCPC Phase Angle Controller •Microprocessor based burst-fire controller / SSR •Ratings from 25A to 90A @ 48-530 VAC •Low-voltage, current, or potentiometer control •Output status indicator •Separate output enable / disable control •Two time-base periods available 6 Typical Wiring… Line source Load Logic Connections (TC Connection on MCTC) 7 MCPC Highlights Ideal for Tungsten Lamp dimming, Resistive Heating Control, and Universal Motor Control. Significant innovative feature is that there is no need to connect the MCPC to both sides of the line source. (Usually required to synchronize the line phase with the control.) Only need access to one side of the line. (Facilitates remotely locating the module close to the load.) Available with an internal potentiometer option for output adjustment when a remote input is not needed. 8 MCPC Operation AC Supply Analog Control Signal Max Min Output voltage to load Time 9 MCS Highlights Available in 3 basic types: Soft start Soft Stop Soft Start and Stop Designed to provide an adjustable gradual application or shutdown of power that reduces surges on startup of loads, along with reducing EMF surges on load turn-off. As with the MCPC, an internal potentiometer option is available. 10 Series MCS Soft-start / Soft-stop SSR •Microprocessor based soft-start / soft-stop controller •Ratings from 25A to 90A @ 48-530 VAC •Low-voltage, current, or potentiometer control •Output status indicator •Adjustable ramp rates MCS provides a phase angle control output that smoothly ramps up or down, (or both), to vary the power to the load. 11 MCTC Highlights Unique self-contained temperature power SSR in one package. control and Requires only a thermocouple and a logic supply to provide a complete closed loop temperature control system. Available in 5 temperature ranges including one for refrigeration, (-100F to +100F). The refrigeration option includes short-cycle compressor protection built in. No need for the customer to separately provide their own time delay relay. 12 Typical Wiring… Line source Load Logic Connections (TC Connection on MCTC) 13 Temperature Control Series MCTC Temperature Control •Microprocessor based temperature controller / SSR •Ratings from 25A to 90A @ 48-530 VAC •Direct J or K thermocouple input •Voltage or current controlled setpoint •Separate output enable / disable control •Open thermocouple protection •LED status indicators 14 Terminal #4 Wiring Example using a potentiometer for setpoint adjustment. Setpoint Adjust 10k to 50k pot for Options A, B, or C Enable Terminal #1 Gnd DC Supply +Vdc High Setpoint Adjust Med Low Enable Gnd Terminal #1 +Vdc 15 DC Supply Wiring Example using fixed resistors for pre-set temperatures. (i.e. a front panel selector switch for end user adjustment.) Water heating application using a mechanical thermostatic switch to control a Crydom CMD2490 Solid State Relay. CMD at 54 Arms 140 120 100 Celsius SCR 1 80 SCR 2 BP Low Tank 60 M id Tank 40 Note the water temp variation 20 0 1 24 47 70 93 116 139 162 185 208 231 254 277 300 323 346 369 392 415 438 461 484 Sam ples 16 (Purple line) Same application using the MCTC as the control. 140 120 100 80 deg C Die A Die B Water Temerature 60 40 20 0 17 Much more even water temperature (Yellow line) Burst Fire Control Series MCBC Burst Fire Controller •Microprocessor based burst-fire controller / SSR •Ratings from 25A to 90A @ 48-530 VAC •Low-voltage, current, or potentiometer control •Output status indicator •Separate output enable / disable control •Two time-base periods available • Very useful for effectively varying power levels without creating “Electrical Noise” (vs. phase angle control). •Available with 2 time base periods,10 and 20 AC cycles, providing 5% and 2.5% step resolution. 18 MCBC Burst Fire Control Theory Voltage across Load 10 Cycle Period 19 Allcycles 10 cycles 2 5 on, =on, = 100% power 50% 20% power Bottom Line Benefits The customer is NOT paying for extra “Bells and Whistles” on the MC series that they do not need… Displays that are buried within equipment and never used. Various option settings that are useful only in development work, but are wasted cost in production systems. Requiring multiple modules vs. the MC series single package. (Ref. Crydom’s CPV and SST control / SSR systems for a comparison.) 20 Customized Products Based on Standard MC Series Technology Can adapt the “Standard” MC product functions fairly easily and quickly. Adds more value to the product for OEM customers. Saves the Customer additional components and costs. Don’t be afraid to “Ask” if an idea is possible. 21 Customized Products evolved from the MC Series Technology From relatively simple… Combined MCPC and MCSS based. MCPC Unit with built in 2 second soft start feature. 22 Customized Products evolved from the MC Series Technology …to slightly more complex MCTC based adaptations… “Point of use” hot water heating. Temperature sensing using thermistor vs. thermocouple Special temperature ranges for Food Warming Cabinets between 100 to 250 degF (38 to120 degC) Low current version with internal power supply for valve control. 23 Customized Products evolved from the MC Series Technology …to much more complex functions. Here using an MCBC based output. N Heater Load L Output 90 –280 vac Cook Power Boost time Standby Power CY6949 Clamshell Down Switch 100% Pwr SSR Adj. Cook Output Pwr 24 Vac Supply Adj. Stdby Pwr 0 %Pwr Closed Clamshell 24 vac Switch Open Input 0 Vac Adj. Boost Time 24 Main Power on Frequently Asked Questions on the MC Series Is the P2 connection common for all of the inputs? (P1, P3, and P4)? Yes, the P2 connection is common to the other input terminals. How does the enable input work? With Logic power applied (P1), the internal microprocessor is running. Using the Enable input allows a quick on and off control of the output without having the microprocessor going through a “start-up” sequence. To “enable the output” a positive voltage, (up to the maximum allowed on P1), is applied. Is it a requirement to use a potentiometer for control? Or can an external analog source be used? Any external analog source can be used. The potentiometer is shown just as an example on the datasheets. On the “A” “B” and “C” options, can the Analog input have higher than the maximum control voltage applied? Yes. The maximum that can be applied is the P1 maximum value of +32vdc. Of course, once the maximum analog input value of the particular unit is reached, (I.e. for the “A” option that level is 5vdc), the output function will be at maximum.) 25 Frequently Asked Questions on the MC Series Can the analog voltage input on the “A”, “B”, and “C” options be paralleled for multiple unit operation from a single source? Yes. What about multi-phase operation using the MCPC for heater control? Since the MCPC references the zero-crossing point of the AC sine wave to position the firing point of the output, each of the phases needs an MCPC. However, as noted in the previous question, the inputs of the individual MCPC’s can be paralleled. Can the “D” option, (4-20 ma control), be wired in series for multiple unit control? Since the analog input shares a common reference terminal with the Enable, and Logic power connections, no. Will there be additional application notes generated specific to the MC series? Definitely. Application notes are planned to address questions relating to multi-phase use of the MC sereis. 26