Signal Consulting, LLC  Model Si30HyBdMC1-50V-30A-ALC

50V-30A Hybrid Bidirectional Open-Loop DC Motor Controller, with Integrated Finned Heat-Sink, 5kHz or 20kHZ PWM,  RS232 LCD Port, Active-Low Control Inputs

Si30HyBdMC1-50V-30A-ALC Features: Power Semiconductors: Eight 90A MOSFETs Max. Continuous Current: 30A with Heat-Sink (as shown). Max. Current for 5 sec: 50A with Heat-Sink ( as shown ). Load Isolation: The Load must be Isolated from the  Power Source. Two Motor Acceleration/Deceleration Modes: Using Jumper J1 Two PWM Carrier Frequencies: 5kHz=J2 short, 20kHz=J2 open. Motor Directional Control: Active Low (4.7kOhm Pull Up to 5V). Motor Speed Control : 5k Ohm Analog Pot, 0 to +5V Load-Voltage Indicator: Bicolor LED. Worst-Case Control Latency: 7 micro seconds. Power-Conversion Efficiency: Approx. 98.5% (at 50V, 30A). Overall Dimensions : 4.6”x2.43”x2.35”, (117 x 62 x 60 mm). Components Type: 100% Solid State, NO Relays On Board:  Filter Capacitors VTS diodes Snubber Circuit included Voltage Requirements: A single DC Source (unregulated), any voltage from 12V to 50 Volts   Si30HyBdMC1-50V-30A-ALC  Spec Sheet  (PDF)

 The Si30HyBdMC1-50V-30A-ALC is a 50V 30A, microprocessor based, high-power, Hybrid, Bidirectional, Motor Controller with user selectable Soft-Start and Soft-Start features. This controller uses a single (12V to 50V at 30A) DC power supply to control the speed of a DC motor in forward or reverse direction. An onboard microprocessor generates a 5kHz or 20kHz PWM carrier signal, controls the load-power (or motor speed), controls the load-current rate (or motor acceleration and deceleration), updates the Liquid Crystal Display (LCD) and monitors the user inputs. The PWM carrier frequency is user selectable by the jumper J2, 20kHz when J2 is open and 5kHz when short. This high frequency PWM rate insures a quiet motor environment. The user can choose between slow or fast motor acceleration/deceleration modes by short-circuiting or open-circuiting the pins labeled J1.  The slow mode, with rise-time/fall-time of 1.25Sec, is selected by short-circuit (J1 jumper installed); while the fast buildup mode, with rise-time/fall-time of 0.05s, is selected by leaving these pins open (no Jumper installed). As the name hybrid (Hy) implies the required motor speed (or PWM pulse-duration) is variable from 0 to 100% in 0.83% steps using the analog voltage (V_P1,G on CN5), while the motor direction is selected using two active low digital (0 to +5V) control signals (V_F,G  and V_R,G on CN4 ) or switches.  All inputs are optically isolated or zener-diode protected. A bicolor LED is used to monitor the motor (or load) voltage (Red = Forward, Green = Reverse). An LCD port (with 9600 Baud RS232 Standard) is provided for optional display of motor RPM data in a 2 line by 16 character format (on CN3). A small (4.6”x2.5”x1.0”) integrated finned hear-sink is used to operate at 30A current levels. Higher current-levels (40A) can be achieved with more efficient heat-sinks. Please click on this link and read the Board Mounting Instructions and Heat Sink Selection Guide.

 This board operates in a wide voltage-range (12V to 50V) at maximum continuous load current of 30A. Typical applications are: Bi-directional DC Motor-Speed Controller, Peltier Effect TE Coolers, Heat Pumps, DPDT Solid State Relay, etc. This board can be configured and programmed to perform efficiently in many customized applications.

Motor Control-Action Truth-Table, (Pins on Connector CN4)

 A Typical Application of the Si30HFHB-50V-30A-ALC

 The motor action or load-current direction is controlled by active low control inputs, (0 to +5V) applied to Pin F (Forward) and/or pin R (Reverse) relative to Pin N (Neutral) on the Connector CN4. These pins are optically isolated from the H-Bridge, providing good noise immunity for these inputs. The control actions and the required voltage levels are defined by the Truth-Table listed above. All control lines (analog and digital) are sampled approximately at 80Hz rate in the fast mode (J1 jumper open), and at 8Hz rate in the slow mode (J1 jumper short). 

 A Typical Application of the Si30HyBdMC1-50V-30A-ALC

 In this open-loop application, the PWM or motor speed (in forward or reverse direction) is adjusted by an external linear 1-turn 5kW potentiometer (Signal Part number Si5Pot1-5k ) and the motor direction is controlled by 2 external normally-open switches connected to port CN4 (as shown below). The LCD module can be ordered from Signal with the part number of Si30LCD2L20CH-3PC  (2 line by 20 character display with 12” cable and 3-pin connector).

Warning:  The connecting wires to the Load and the Power Supply must be heavy gauge copper wire (#12 AWG or heavier) to handle the rated current level. In addition, these heavy gauge wires act as a heat sink, protecting the board from overheating. Note that each connecting point on CN1 is available at 2 places, thus two smaller wires can be used in place of a larger one.

Availability: We usually ship in 2-3 business days.

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