High to low voltage four quadrant dc drive (2 pages)
Summary of Contents for Minarik Motor Master 20000 Series
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MM20000 Series Models: MM21000A MM21001A MM21010A MM21011A MM22000A MM22001A MM22011A SCR, Adjustable Speed Drives for DC Brush Motors...
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Minarik Corporation. The information and technical data in this manual are subject to change without notice. Minarik Corporation 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.
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Follow sound maintenance procedures. It is possible for a drive to run at full speed as a result of a component failure. Minarik strongly recommends the installation of a master switch in the main power input to stop the drive in an emergency.
Installation Mounting Warning Do not install, rewire, or remove this control with power applied. Doing so may cause fire or serious injury. Make sure you have read and understood the Safety Warnings on page i before attempting installation. The chassis must be earth grounded. Use a star washer beneath the head of at least one of the mounting screws to penetrate the anodized chassis surface and to reach bare metal.
Installation Wiring Warning Do not install, remove, or rewire this equipment with power applied. Failure to heed this warning may result in fire, explosion, or serious injury. Circuit potentials are at 115 or 230 VAC above ground. To prevent the risk of injury or fatality, avoid direct contact with the printed circuit board or with circuit elements.
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 leads is not practical, the user should twist all logic leads with themselves to minimize induced noise.
Installation Speed adjust potentiometer connections Warning Be sure that the potentiometer tabs do not make contact with the potentiometer enclosure. Grounding the input will cause damage to the drive. Install the circular insulating disk between the mounting panel and the 10K ohm speed adjust potentiometer (see Figure 3). Mount the speed adjust potentiometer through a 0.38-inch (10 mm) hole with the hardware provided.
Dow Corning® 340 Heat Sink Compound) between the drive chassis and heat sink surface for optimum heat transfer. Line fusing Minarik drives require an external fuse for protection. Use fast acting fuses rated for 250 VAC or higher. Table 1 lists the recommended line fuse sizes.
Figure 4 (page 12). Motor connections Minarik drives 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.
Installation Power connections Connect the AC line power leads to terminals L1 and L2, or to a double-throw, single-pole master power switch as shown in Figure 4 on page 12 (recommended). Line fuse connections Wire an external line fuse between the stop switch (if installed) and the L1 terminal as shown in Figure 4 on page 12.
Installation Table 2. Field Output Connections Line Voltage Approximate Connec Motor (VAC) Field Voltage (VDC) Field To F1 and L1 F1 and F2 F1 and L1 F1 and F2...
Installation NOTES: 1. DO NOT CONNECT FIELD OUTPUT IF USING A PERMANENT-MAGNET MOTOR. REFER TO TABLE 2 (PAGE 11) FOR ALTERNATE FIELD CONNECTIONS. 2. DO NOT ADD A LINE FUSE TO L2 UNLESS LINE VOLTAGE IS 230 VAC. Figure 4. Power, Fuse and Motor Connections...
S3. A potentiometer can be used to scale the analog input voltage. An interface device, such as Minarik model PCM4, may be used to scale and isolate an analog input voltage. With either 115 VAC or 230 VAC line voltage, an analog input voltage range of approximately 0–1.4 VDC is required to...
Operation Warning Dangerous voltages exist on the drive when it is powered. BE ALERT. High voltages can cause serious or fatal injury. Before applying power • Verify that no conductive material is present on the printed circuit board. • Verify that the AC supply is properly balanced. Drive startup and shutdown 1.
Removing AC line power (both L1 and L2) is the only acceptable method for emergency stopping. Minarik strongly recommends the installation of an emergency stop switch for chassis drives. The switch contacts should be rated at a minimum of 250 volts and...
Operation Line starting and stopping When AC line voltage is applied to the drive, the motor accelerates to the set speed. When AC line voltage is removed, the motor coasts to a stop. Line stopping (removing AC line voltage) is recommended for stopping in emergency situations only.
Do not ground both ends of the shield. Minarik Corporation offers two accessory plug harnesses for connecting to the INHIBIT terminals: part number 201-0024 [inhibit plug with 18-inch (46 cm) leads]; and part number 201-0079 [inhibit plug with 36-inch (91 cm) leads].
Operation Dynamic braking Warning Wait for the motor to completely stop before switching it back to RUN. This will prevent high armature currents from damaging the motor or drive. NOTE: For motors rated 1/17 horsepower and lower, a brake resistor is not necessary since the armature resistance is high enough to stop the motor without demagnetization.
Calibration Warning Dangerous voltages exist on the drive when it is powered. 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. BE ALERT. High voltages can cause serious or fatal injury.
Calibration Calibration procedure Calibrate the drive using the following procedure: 1. Set the MIN SPD, MAX SPD, ACCEL and DECEL trimpots to zero (full CCW). 2. Set the TORQUE trimpot to maximum (full CW). 3. Set the IR COMP trimpot to midrange (approximate 12 o’clock position).
Calibration MAXIMUM SPEED (MAX SPD) The MAX SPD setting determines the motor speed when the speed adjust potentiometer is turned full CW. It is factory set for maximum rated speed. To calibrate, set the MAX SPD trimpot full CCW. Set the speed adjust potentiometer or reference voltage to maximum.
Calibration DECELERATION (DECEL) The DECEL setting determines the time the motor takes to ramp to a lower speed. See Specifications on page 1 for approximate deceleration times. DECEL is factory set for the fastest deceleration time (full CCW). To set the deceleration time: 1.
Calibration REGULATION (IR COMP) The IR COMP trimpot setting determines the degree to which motor speed is held constant as the motor load changes. It is factory set for optimum motor regulation. To calibrate IR COMP (exact calibration): 1. Turn the IR COMP trimpot full CCW. 2.
Although TORQUE LIMIT is set to 120% of maximum drive current rating, continuous operation beyond that rating may damage the motor. If you intend to operate beyond the rating, contact your Minarik representative for assistance. The TORQUE setting determines the maximum torque for accelerating and driving the motor.
Application Notes FWD-STOP-REV switch Use a three-pole, three-position switch with a single speed adjust potentiometer to coast to a stop between reversals (Figure 11). Set the switch to the center position to decelerate the motor to a stop. The switch contacts should be rated at a minimum of 250 volts and 150% to 200% of motor nameplate current.
Application Notes Reversing with dynamic braking A dynamic brake may be used when reversing the motor direction (Figure 12). Use a three-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.
Application Notes Reversing with a DLC600 DIGI-LOK controller DL600 can be used in a reversing application. The controller must be inhibited while braking. Without the inhibit feature, the controller will continue to regulate, causing overshoot when the DIGI-LOK is switched back to the drive.
Application Notes Independent adjustable speeds Connect two speed adjust potentiometers with a single pole two position switch to select between two independent speeds shown in the forward direction (Figure 14). The speed adjust potentiometers can be mounted at two separate operating stations.
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 15 shows a connection for fixed high and low speed adjust potentiometers.
Application Notes Multiple fixed speeds Replace the speed adjust potentiometer with series resistors with a total series resistance of 10K ohms (Figure 16). Add a single pole, multi-position switch with the correct number of positions for the desired number of fixed speeds. Figure 16.
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 pushbutton for the JOG pushbutton as shown in Figure 17.
Application Notes Leader-follower application In this application, use a PCM4 to monitor the speed of the leader motor (Figure 18). The PCM4 isolates the leader motor from the follower drive, and outputs a voltage proportional to the leader motor armature voltage. The follower drive uses this voltage reference to set the speed of the follower motor.
Application Notes Single speed potentiometer control of multiple drives Multiple drives can be controlled with a single speed adjust potentiometer using a PCM4 at the input of each drive to provide isolation (Figure 19). Optional ratio potentiometers can be used to scale the PCM4 output voltage, allowing independent control of each drive.
• Verify that there are no short circuits or grounded connections. • Check that the drive’s rated armature outputs are consistent with the motor ratings. For additional assistance, contact your local Minarik distributor, or the factory direct: (800) MINARIK (phone) or (800) 394-6334 (fax).
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“jams”. See page 26 for information on adjusting the TORQUE trimpot. 4. Field circuit is shorted. 4. Send in drive to Minarik repair department. Line fuse does not 1. Reference signal or 1. Increase reference blow, but the motor...
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Symptom Possible Suggested Causes Solutions Line fuse does not 3. Drive is overloaded. 3. Verify that the motor is blow, but the motor not jammed. Increase does not run (cont.) TORQUE setting (page 26). 4. Drive is not receiving 4. Apply AC line voltage AC line voltage.
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Symptom Possible Suggested Causes Solutions Motor pulsates or 1. IR COMP is set too 1. Adjust the IR COMP surges under load high. setting slightly CCW until the motor speed stabilizes (page 25). 2. Control is in current 2. Check that motor is of limit mode.
Troubleshooting Replacement Parts Replacement parts are available from Minarik Corporation and its distributors for this drive series. Table 4. Replacement Parts Model No. Symbol Description Minarik MM21001A C501–502 220 uF, 35 VDC Capacitor 011-0027 D501–503 1N5406 Diode 071-0007 SCR501–502 S8020L High-power SCR 072-0043 R501 0.05 Ohm, 3W Resistor...
Certificate of Compliance Minarik Corporation hereby certifies that its MM21000A series drives have been approved to bear the “CE” mark provided the conditions of approval (listed in Exhibit “A”) have been met by the end user. The MM20000 series has been tested to the following test...
In addition to EMI/RFI safeguards inherent in the MM20000 series’ design, external filtering is required. Minarik requires the Corcom® filters listed in Table 5. If the exact filter is not available, the specifications are as follows: L = (1.73 + 0.03) milliHenries.
L & L1 = 2 * (0.8) milliHenries. C & C1 = 2 * (0.1) microFarads @ 400W VDC. R in = 0.1 ohm; R out = 1.2 ohm. Table 6. Minarik Filters Nameplate Current of Motor Wired to the Drive...
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The end user must use the filtration listed in Exhibit A to comply with CE. The OEM may choose to provide alternative filtering that encompasses the Minarik drive and other electronics within the same panel. The OEM has this liberty because CE is a machinery directive.
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Unconditional Warranty A. Warranty Minarik Corporation (referred to as "the Corporation") warrants that its products will be free from defects in workmanship and material for twelve (12) months or 3,000 hours, whichever comes first, from date of manufacture thereof. Within this warranty period,...
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Other drives from Minarik Corporation: DLC600 NRGD Series MMRGD Series BOSS Series 901 East Thompson Avenue Glendale, California 91201-2011 Tel: (800) MINARIK Fax: (800) 394-6334 www.minarikcorp.com Document Number 250-0089, Revision 3 Printed in the U.S.A – 6/01 $12.00 North America, $13.00 Outside North America...
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