Signal Consulting, LLC   Model Si18HyMTC1-50V -20A

Hybrid Unidirectional Motor and Temperature Controller

Si18HyMTC1-50V-20A Features: Fully Programmed Proportional PWM Controller Simultaneously Controlling Temperature and DC Motor- Speed  in Open or Closed-Loop Modes Potentiometers for Set-Temperature and for Set-RPM Temperature Control in 1/20C Steps, -250C to +1020C Range LCD Output for Display Alarm-Sensor Inputs and LED Outputs The Controller is Immune to Power Interruptions Slow Start/Stop Control Features Assure Long Motor Life 100% Solid State, NO Relays Smooth and Silent (20KHz PWM) Unidirectional or Bi-directional Speed Control for a Wide-Range of DC Motors  On Board: Filter Capacitors VTS diodes Snubber Circuit Ready  Voltage Requirement: A single DC Source Voltage (unregulated and Unfiltered) with any voltage value from 9V to 50V (for Vp)  Si18HyUdMTC1-50V  Spec Sheet  (PDF)

The Si18HyUdMTC1-50V-20A is a versatile, fully-programmed, microprocessor-based, proportional, Hybrid, Unidirectional, Motor and Temperature Controller board; capable of controlling two processes (temperature and DC motor-speed) simultaneously in a closed-loop or open-loop control mode. By proportional control, we mean that the amount of correction used in the closed-loop is proportional to the difference between the set and measured values. By hybrid controller, we mean that the control inputs are analog but the control outputs are digital. This controller is immune to power interruptions. Set-values and system modes are saved in non-volatile memory as the AC power is interrupted and the system returns to the same working state when the AC power is restored. The Si18 can be configured by the user to control a single process (Temperature only or RPM only) or to control two processes simultaneously. It is suited for embedded applications. In addition, control-modes (open or closed loop; unidirectional or bi-directional speed), control-limits and correction-biases can be defined in the configuration phase (using two push-buttons connected to Pins 1, 3 and pins 1,4 on port CN2/ExK). Two 10KW potentiometers (connected to pins 1, 6, 8, for temperature; pins 1, 7, 8 for RPM on port CN2/ExK) are used to input set-temperature and Set-RPM values. An optional 2-line by 20-character long LCD Module (with Hitachi HD44780 Interface, connected to CN1/LCD port) is used to display: Set-Temperature, Set-RPM, Measured-Temperature, Measured-RPM, Status and Alarm information. Pulse-width modulation (PWM) at 1Hz rate is used to achieve closed-loop, proportional-temperature control. Several KW of heating and cooling power can be controlled in this manner. Similarly, pulse width modulation, at 20kHz rate is used to achieve a smooth and noise-free DC motor-speed control in closed-loop or open-loop mode and in 9V to 50V; 0 to 20A range. All power electronics and filter components (IC2, C1) are included on the board to provide unidirectional speed control. Bi-directional speed control (with an external power-bridge) and unidirectional speed control are supported by an optical-wheel/RPM-sensor (2”-OD, 45-holes, in closed-loop mode), and by a 25T RPM-Pot (P2, in open-loop mode). Slow-start, slow-stop control features assure long motor life and prevent power overloads. TTL level (0 to +5V) Pulse-Width- Modulated outputs (PWM @20KHz) are provided (pins1,6 for +RPM; pins1,7  for -RPM on port CN7/HCR) to support bi-directional motor-speed control. A small-size, 9-bit, digital-thermometer sensor Si18DTsens, is used to measure and control the temperature with ½⁰ C accuracy in the -25⁰C to +102⁰C range. The sensor is manufactured by Dallas Semi. www.dalsemi.com with part number DS18S20 and it is connected to CN4/TS1 port. Because this sensor outputs zeros and ones, it is virtually immune to noise and loading; ideally suited for remote sensing. This sensor uses a unique “1-wire interface” (with parasite power mode) that requires only 2-conductors for reliable remote (long as 20 meters) temperature sensing. In addition, this sensor is calibrated by Dallas Semi., guaranteeing +/- ½ ⁰C, accuracy. Heat and cold TTL level (0 to +5V) relay outputs are provided (Heat on pins 3, 2; Cold on pins 1, 2; at port CN7/HCR) to drive solid-state relays. In addition, heat and cold TTL level LED outputs are provided (Heat on pins 5, 4; Cold on pins 2, 3; at port LED2/R-G) to drive indicator lights. A low-power, variable-resistance type alarm-sensor (connected to CN3/LWS port) is used to enable/disable the heating or cooling action. Sensor resistance less than 250KW will enable (while greater than 250KW will disable) the heating or cooling action.

A Typical Si18HyMTC1-50V-20A Application

The Si18HyUdMTC1-50V can be used in many applications including: Shaking Platforms, Heated/ Cooled Shaking Platforms, Heated Waterbaths, Shaking Waterbaths, etc. A typical hybrid application, depicting a shaking, thermo-electric (TE) platform (heated or cooled) is shown below. The TE cells are powered by the Si20HPB4-50V (High Power H-Bridge Board) and the platform temperature is controlled with 1/2⁰ C accuracy in the -25⁰C to +102⁰C range. Temperature is measured with the Si18DTsens 9-bit, digital-thermometer sensor, while the Si18LEDhc accessory indicates that the heater or cooler is turned on. This circuit uses a 24V, 4A, brush-type DC Motor, and the accessories Si18RPMsens and Si18RPMwheel, provides the optical feedback, achieving 2% speed regulation. The motor Set-Speed  and Set-Temperature values are adjustable from 0 to 100% in 0.66% steps, using the Si18Pot2PB2MC8 accessory An optional 2 line x 20 character LCD (With HITACHI HD44780 Interface Standard) is used for data display.  A 2 line by 20 characters long LCD (with HITACHI HD44780 Interface Standard) is used for Set-Temperature, Measured-Temperature, Set-RPM and Measured-RPM data display. The LCD with back-light (with 8” cable, and with two 14-pin connectors) can be ordered from Signal with part number of Si24LCD2L20CH ; OEM pricing is available from Sunlike Display Tech Corp. in Taiwan, http://www.lcd-modules.com.tw. The TE Cells can be purchased from Melcor Corp. Trenton, NJ 08648 USA, www.melcor.com.

The DC Motor can be purchased from Bodine, www.bodine-electric.com; or from other vendors, http://www.e-motorsonline.com/emotors/dcmproduct_list.php .

Si18-Application Notes and Drawings

 The Si18 controller board can be used in numerous applications. Please click on the blue titles to link to some of these application notes and drawings: Si18HyUdMTC1-50V-AppNotes.

Si18-Accessories

Several accessories can be used with the Si18 controller board depending on the required application.  Please click on the blue titles to link to these accessories.

  All Hybrid Applications Use the Accessory:  Si18Pot2PB2MC8

 To achieve closed-loop motor speed control mode (RPM control only), choose the following additional accessories: Si18RPMsens  and Si18RPMwheel .

To achieve closed-loop proportional temperature control mode (temperature only), choose the following additional accessories:Si18DTsens and Si18LEDhc .

To achieve simultaneously closed-loop motor speed control and closed-loop proportional temperature control mode, choose the following additional accessories: Si18RPMsens, Si18RPMwheel, Si18DTsens , Si18LEDhc .

To achieve simultaneously open-loop motor speed control and closed-loop proportional temperature control mode, choose the following additional accessories: Si18DTsens and Si18LEDhc .

Typical Domestic Shipping Cost: $12.00.
Typical International Shipping Cost: $24.00.

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

All Products Are Proudly Made in the USA