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Minarik MM311U User Manual

Mm300 series. isolated input, dual voltage, variable speed scr drives for brush motors
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MM300 Series
MODELS:
MM311U
MM301U
MM301A
Isolated Input, Dual Voltage, Variable Speed SCR
Drives for Brush Motors

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Summary of Contents for Minarik MM311U

  • Page 1 MM300 Series MODELS: MM311U MM301U MM301A Isolated Input, Dual Voltage, Variable Speed SCR Drives for Brush Motors...
  • Page 2 Minarik Drives. The information and technical data in this manual are subject to change without notice. Minarik Drives and its Divisions make no warranty of any kind with respect to this material, including, but not limited to, the implied warranties of its merchantability and fitness for a given purpose.

  • Page 3: Safety Warnings

    Safety Warnings This symbol denotes an important safety tip or warning. Please read these sec- tions carefully prior to performing any of the instructions contained in that section. • Have a qualified electrical maintenance technician install, adjust and service this equipment.

  • Page 4: Table Of Contents

    Chassis Drives (MM301U, MM311U) ........8...
  • Page 5 Chassis Drives (MM301U, MM311U) ........24...
  • Page 6 Troubleshooting ............48 Unconditional Warranty .
  • Page 7 Page MM301U and MM311U Dimensions ........3 MM301A Dimensions ..........4 MM300 Series Layout .
  • Page 8 Tables Fig. Description Page Recommended Line Fuse Sizes ........9 Field Output Connections for Chassis Drives .

  • Page 9: Specifications

    Specifications Max. Armature HP Range HP Range Current with 115 VAC with 230 VAC Model (Amps DC) Applied Applied MM311U 1/20–1/8 1/10–1/4 1/4–1 1/2–2 MM301U 10.0 MM301A 10.0 1/4–1 1/2–2 AC Line Voltage 115 VAC or 230 V AC, 50 or 60 Hz, 1 Phase Armature Voltage (115 VAC Input) 0–90 VDC...
  • Page 10 Specifications Ambient Temperature Range Open Chassis 10°C-55°C Cased 10°C-45°C Weight Open Chassis 2.1 lbs (953 grams) Cased 7.75 lbs (3.5 kilograms) Tachogenerator Feedback Voltage Range 7-50 VDC per 1000RPM Short-circuit current rating (SCCR) is the maximum short-circuit current that the speed control can safely withstand when protected by a specific over-current protective device(s).

  • Page 11: Dimensions

    4.46 [113] 3.00 [76] 0.70 [18] 0.60 [15] 0.77 [19] 1.90 [48] 0.98 [25] 6.30 [160] 6.90 [175] SIX (6) MOUNTING SLOTS 0.18 [5] WIDE x 0.30 [8] DEEP ALL DIMENSIONS IN INCHES [MILLIMETERS] Figure 1. MM301U and MM311U Dimensions...
  • Page 12 Dimensions 6.90 [175] 6.30 [160] 1.40 [36] 10.22 [260] 9.80 [249] 7.00 [178] 0.22 1.45 [37] 5.51 [140] 4.78 [121] 2.31 [59] 0.12 1.50 [38] 1.50 [38] THREE 0.88 [22] KNOCKOUTS ALL DIMENSIONS IN INCHES [MILLIMETERS] Figure 2. MM301A Dimensions...
  • Page 13 Layout ACCEL AND DECEL TRIMMER POTENTIOMETERS (P503, P504) IR COMP TRIMMER POTENTIOMETER (P506) FEEDBACK SELECTOR CURRENT LIMIT SWITCH (SW505) TRIMMER POTENTIOMETER (P505) POWER LED (IL502) TACHOGENERATOR VOLTAGE TRIMMER POTENTIOMETER (P507) CURRENT LIMIT LED (IL501) TACHOGENERATOR TERMINAL BLOCKS SPEED ADJUST POTENTIOMETER TERMINAL BLOCKS START/STOP TERMINAL BLOCKS...

  • Page 14: Installation

    Installation Wiring Use 12 AWG wire for the AC line voltage (L1 and L2), motor armature (A1 and A2), and dynamic brake resistor (if used). Use 18 AWG wire for logic (field output, speed adjust potentiometer, tachogenerator, etc.) Twist logic wires to avoid picking up unwanted electrical noise. Use shielded cable if wires are longer than 12 inches (30 cm).

  • Page 15: Shielding Guidelines

    As a general rule, Minarik recommends shielding of all conductors. If it is not practical to shield power conductors, Minarik recommends shielding all logic-level leads. If shielding logic level leads is not practical, the user should twist all logic leads with themselves to minimize induced noise.

  • Page 16: Chassis Drives (Mm301U, Mm311U)

    Installation Chassis Drives (MM301U, MM311U) Mounting Mount the drive with its board in either a horizontal or vertical plane. Four 0.188 inch (4.8 mm) wide slots in the chassis accept #8 pan head screws. The chassis units do not have to be earth grounded. If you choose to ground the chas- sis, use a star washer beneath the head of at least one of the mounting screws to pen- etrate the anodized chassis surface and to reach bare metal.

  • Page 17: Heatsinking

    90 VDC Motor 180 VDC Motor Max. DC Armature AC Line Fuse Horsepower Horsepower Current (amps) Size (amps) 1/20 1/10 1/15 1 1/2 Minarik Drives offers a 63 mA pico fuse (part number 050-0081) which protects the transformer and logic.

  • Page 18: Speed Adjust Potentiometer

    Installation Speed adjust potentiometer Install the circular insulating disk between the mounting panel and the 10K ohm speed adjust potentiometer (see Figure 4). Mount the speed adjust potentiometer through a 0.38 inch (10 mm) hole with the hardware provided. Twist the speed adjust poten- tiometer wire to avoid picking up unwanted electrical noise.

  • Page 19: Cage-Clamp Terminals

    Installation Cage-clamp terminals Logic connections are made to a cage-clamp terminals. To insert a wire into the cage- clamp terminal: 1. Press down on the lever arm using a small screwdriver. 2. Insert wire into the wire clamp 3. Release the lever arm to clamp wire. Figure 5.

  • Page 20: Connections

    Minarik drives supply motor voltage from A1 and A2 terminals (TB501). It is assumed throughout this manual that when A1 is positive with respect to A2, the motor will rotate clockwise (CW) while looking at the output shaft protruding from the front of the motor.
  • Page 21 1. L1 IS THE HOT TERMINAL. 2. L2/115 IS THE NEUTRAL TERMINAL FOR 115 VAC INPUT. 3. TYPICAL FIELD CONNECTIONS SHOWN. REFER TO TABLE 2 (PAGE 14) FOR ALTERNATE FIELD CONNECTIONS. Figure 6. MM301U and MM311U AC Line, Motor and Field Connections...

  • Page 22: Power Input

    Installation Power Input Connect the AC line power leads to terminals L1 and L2 and install a master power switch in the voltage input line as shown in Figure 6 (page 13). The switch contacts should be rated at a minimum of 250 volts and 200% of maximum drive current. Field output The field output is for shunt wound motors only.

  • Page 23: Start/Stop Pushbuttons

    Installation START/STOP pushbuttons Pushbutton operation of the MM300 Series requires a momentary normally open STOP pushbutton be wired to terminals B2 and B3 and a momentary normally closed START pushbutton wired to terminals B1 and B2. These switches must be used together and are not included with the drive.

  • Page 24: Voltage Or Current Follower

    Installation Voltage or current follower Instead of using a speed adjust potentiometer, MM300 Series drives may be wired to follow an analog input signal (see Figure 6 for connections). This input signal can be in the form of voltage (0-10 VDC) or current (4-20 mA). Because these drives have built in isolation the input signal can be either grounded or ungrounded.

  • Page 25: Slide Switches

    Installation Slide switches Warning Change slide switch settings only when the drive is disconnected from the AC line volt- age. Make sure both line voltage and motor switches are set to their correct position. If the switches are improperly set to a lower voltage position, the motor will not run at full voltage and may cause transformer damage.
  • Page 26 Installation FEEDBACK (SW505) Select the appropriate feedback option: ARMATURE for armature feedback, or TACH for tachometer feedback. See Figure 8 for all slide switch locations. VOLTAGE SELECT SWITCHES (SW501,SW502) FEEDBACK SELECT SWITCH (SW505) ARMATURE SIGNAL VOLTAGE SOURCE SELECT SELECT (SW503) (SW504) Figure 8.

  • Page 27: Enclosed Drives (Mm301A)

    Installation Enclosed drive Mounting The NEMA 4X enclosed drive comes with 0.88 inch (22mm) conduit knockout holes at the bottom of the enclosure. The units may be vertically wall mounted using the four 0.19 inch (5 mm) slotted holes on the attached heat sink. For motor loads less than 5 ADC, the drive may be bench mounted horizontally, or operated without mounting.

  • Page 28: Heatsinking

    Installation Heat sinking The enclosed MM300 Series drive contains sufficient heat sinking in its basic configuration. No additional heat sinking is necessary when installed in accordance with the guidelines specified in this manual. Line fusing WARNING: Most code requires that upstream branch protection be provided to protect input power wiring.

  • Page 29: Connections

    Installation Connections WARNING: A single fault like a power device short may cause motor rotation when in the stop mode. The user is responsible for assur- ing safe conditions for operating personal by providing suitable guards, audio or visual al- arms, or other devices.

  • Page 30: Motor

    Minarik Drives motor speed controls supply motor voltage from A1 and A2 terminals. It is assumed throughout this manual that when A1 is positive with respect to A2, the motor will rotate clockwise (CW) while looking at the output shaft protruding from the front of the motor.
  • Page 31 Installation – 230 VAC MOTOR SEE NOTES 1, ARMATURE 2, AND 3 115 VAC EARTH GROUND (GREEN SCREW) 115/230 VAC COM (–) REF (+) FIELD LINE VOLTAGE INPUT COIL 0 – 10 VDC OR 4 – 20 mADC SEE NOTE 4 INPUT SIGNAL 1.

  • Page 32: Operation

    30%. The form factor will increase beyond the typi- cal value, causing increased motor heating. Contact the factory for details. Chassis Drives (MM301U, MM311U) Speed adjust potentiometer input, no START/STOP pushbutton: It is necessary to wire a jumper between B1 and B3 if no START/STOP switches are to be used.

  • Page 33: Speed Adjust Potentiometer Input With Start/Stop Pushbuttons

    Operation 2. Apply AC line voltage. 3. Slowly advance the speed adjust potentiometer clockwise (CW). The motor slowly accelerates as the potentiometer is turned CW. Continue until the desired speed is reached. 4. Remove AC line voltage to coast the motor to a stop. Speed adjust potentiometer input with START/STOP pushbuttons: 1.

  • Page 34: Diagnostic Leds

    Operation Analog signal input with START/STOP pushbuttons: 1. Set the analog signal so that it is at its lowest level (0V or 4mA). 2. Apply AC line voltage. 3. Press the START pushbutton. 4. Slowly increase the analog signal and press the start pushbutton. The motor accel- erates as the signal is increased.

  • Page 35: Line Starting And Line Stopping

    Operation Line starting and line stopping Line starting and line stopping (applying and removing AC line voltage) is recom- mended for infrequent starting and stopping of a drive only. When AC line voltage is applied to the drive and a START is commanded, the motor accelerates to the speed set by the speed adjust potentiometer or analog input signal.

  • Page 36: Dynamic Braking

    Operation Figure 11. Run/Decelerate to Minimum Speed Switch Dynamic Braking Dynamic braking may be used to rapidly stop a motor (Figure 12, page 29). For the RUN/BRAKE switch, use a three pole, double throw switch rated for at least the maxi- mum DC armature voltage, 15 amps.
  • Page 37 Operation Warning Wait for the motor to completely stop before switching it back to RUN. This will prevent high armature currents from damaging the motor. MM300 Series Drive DYNAMIC BRAKE RESISTOR BRAKE MOTOR Figure 12. Dynamic Brake Connection...

  • Page 38: Enclosed Drive Operating Modes (Manual / Auto)

    Operation Enclosed drive operating modes WARNING: If you run the drive in AUTO mode, you must recalibrate the MIN SPD trimpot to offset any motor drift caused by the input signal. Refer to the Calibration section (page 32) for more information. The mode selector switch on the drive, mounted on its cover, provides the option of operating in either MANUAL (mounted speed potentiometer) or AUTO (external signal source) mode.

  • Page 39: Enclosed Drive Operation

    Operation Enclosed drive operation WARNING: For frequent starts and stops, open the B1 and B3, decelerate to a minimum speed, or apply a dynamic brake to the motor. Do not use any of these methods for emergency stopping. They may not stop a drive that is malfunctioning.

  • Page 40: Calibration

    Calibration WARNING: Dangerous voltages exist on the drive when it is powered, and up to 30 seconds after power is removed and the motor stops. When possible, disconnect the voltage input from the drive before adjusting the trimpots. If the trimpots must be adjusted with power applied, use insulated tools and the appropriate personal protection equipment.
  • Page 41 Calibration IR COMP CURRENT LIMIT TACH VOLTS DECELERATION ACCELERATION MINIMUM SPEED MAXIMUM SPEED 13. Calibration Trimpot Layout...

  • Page 42: Drive Calibration Procedure

    Calibration Drive Calibration Procedure Prepare the MM300 series drive for calibration as follows. This procedure applies to both chassis and enclosed drives. 1. Ensure that no power is applied to the drive. 2. If you use an enclosed drive, you must open the drive cover to gain access to the trimpots.

  • Page 43: Minimum Speed (Min Spd)

    Calibration MINIMUM SPEED (MIN SPD) The MIN SPD setting determines the motor speed when the speed adjust potentiome- ter or input signal is set for minimum speed. It is factory set to zero speed. To calibrate MIN SPD: 1. Turn the speed adjust potentiometer full CCW or set the input signal for minimum voltage or current.

  • Page 44: Current Limit

    Calibration CURRENT LIMIT The CURRENT LIMIT setting determines the maximum armature current output of the drive. It is factory set at 120% of rated motor current. To calibrate CURRENT LIMIT, refer to Figure 13 (page 33), or use the following proce- dure: 1.

  • Page 45: Ir Compensation (Ir Comp)

    Calibration IR COMPENSATION (IR COMP) The IR COMP setting determines the degree to which motor speed is held constant as the motor load changes. It is factory set at optimum motor regulation for the high- est motor horsepower. To calibrate IR COMP, refer to Figure 13 (page 33), or use the following procedure: 1.
  • Page 46 Calibration MM311U CURRENT CURRENT LIMIT COMP LIMIT COMP 1/8 HP 1/4 HP 90 VDC 180 VDC 1750 RPM 1750 RPM 1.3 ADC 1.4 ADC CURRENT CURRENT LIMIT COMP LIMIT COMP 1/8 HP 1/10 HP 180 VDC 90 VDC 1750 RPM 1750 RPM 0.8 ADC...

  • Page 47: Acceleration (Accel)

    Calibration ACCELERATION (ACCEL) The ACCEL setting determines the time the motor takes to ramp to a higher speed, within the limits of available torque. The ACCEL setting is factory set for its fastest acceleration time (full CCW). To calibrate ACCEL: 1.

  • Page 48: Tach Volts

    Calibration To calibrate DECEL: 1. Set the speed adjust potentiometer or input signal for maximum speed. The motor should run at maximum speed. 2. Set the speed adjust potentiometer or input signal for minimum speed and measure the time it takes the motor to go from maximum to minimum speed. 3.
  • Page 49 Calibration 5. Set the speed adjust potentiometer or input signal to minimum speed. 6. Remove power from the drive. 7. Set SW505 to TACH for tachometer feedback. 8. Connect power to the drive. 9. Set the IR COMP trimpot full CCW. 10.

  • Page 50: Application Notes

    Application Notes Multiple fixed speeds Replace the speed adjust potentiometer with series resistors with a total series resist- ance of 10K ohms (Figure 15). Add a single pole, multi-position switch with the correct number of positions for the desired number of fixed speeds. Figure 15.

  • Page 51: Adjustable Speeds Using Potentiometers In Series

    Application Notes Adjustable speeds using potentiometers in series Replace the speed adjust potentiometer with a single pole, multi-position switch, and two or more potentiometers in series, with a total series resistance of 10K ohms. Figure 16 shows a connection for fixed high and low speed adjust potentiometers. Figure 16.

  • Page 52: Independent Adjustable Speeds

    Application Notes Independent adjustable speeds Replace the speed adjust potentiometer with a single pole, multi-position switch, and two or more potentiometers in parallel, with a total parallel resistance of 10K ohms. Figure 17 shows the connection of two independent speed adjust potentiometers that can be mounted at two separate operating stations.

  • Page 53: Reversing

    Application Notes Reversing A dynamic brake may be used when reversing the motor direction (Figure 18). Use a two pole, three position switch rated for at least the maximum DC armature voltage and maximum braking current. Wait for the motor to stop completely before switching it to either the forward or reverse direction.

  • Page 54: Run/Jog Switch

    Application Notes RUN/JOG switch Using a RUN/JOG switch is recommended in applications where quick stopping is not needed and frequent jogging is required. Use a single pole, two position switch for the RUN/JOG switch, and a single pole, normally closed, momentary operated pushbut- ton for the JOG pushbutton.

  • Page 55: Reversing With A Digi=Lok Controller, Model Dlc600

    Figure 20 shows the connection of the reversing circuit to a MM300 series drive and to a DLC600. Note: Only one DLC option (Optical Encoder or Magnetic Pickup) may be used at a time. MINARIK DRIVE Dynamic...
  • Page 56 5. Terminal block connections should be consistent with the connections shown in this manual. 6. Check that line fuses FU501 and F502 are properly sized and not blown. For additional assistance, contact your local Minarik distributor, or the factory direct: PHONE: (800) MINARIK or (800) 646-2745 FAX: (800) 624-6960...
  • Page 57 (i.e. the system. reversing). 4. Field circuit is open. 4. Send drive to Minarik repair department. Motor runs too fast at 1. MIN SPD and MAX SPD 1. Recalibrate MIN SPD and maximum speed setting settings are too high.
  • Page 58 Troubleshooting Problem Suggested Possible Solutions Causes 1. Speed adjust pot, voltage Line fuse does not 1. Increase the speed adjust input signal, or current input blow, but the motor pot, voltage, or current set- signal set to zero speed. does not run ting.
  • Page 59 (i.e. reversing). the system. 4. Field circuit is open. 4. Send drive to Minarik repair department. 1. MIN SPD and MAX SPD set- 1. Recalibrate MIN SPD and Motor runs too fast tings are too high.
  • Page 60 Troubleshooting Block Diagram Figure 21. MM300 Series Block Diagram...
  • Page 61 Troubleshooting Replacement Parts Replacement parts are available from Minarik Corporation and its distributors for this drive series. Table 3. Replacement Parts Model No. Symbol Description Minarik P/N MM301U D501,502, 503 20 A, 800 V Diode, D8020L 071-0039 IC503 IS0122P IC...
  • Page 62 C. Limitations of Liability - In the event of any claim or breach of any of Minarik Drives’s obligations, whether express or implied, and particularly of any other claim or breach of...
  • Page 63 Notes...
  • Page 64 M I N A R I K D R I V E S w w w . m i n a r i k d r i v e s . c o m 14300 De La Tour Drive, South Beloit, IL 61080 Phone: (800) 646-2745 Fax: (800) 624-6960 Document number 250–0175, Revision 10...

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