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M A X P L U S 3 0 6 O P T I O N S P I N D L E A M P L I F I E R
Application
This manual is designed to help you install the MaxPlus™ 306 Option Spindle amplifier.
Unpacking and Inspection
Carefully unpack the amplifier and inspect it for visible damage. Check items against the
packing list. Report any missing or damaged items to your supplier.
Warranty and Service
The amplifier is warranted to be free from defects in workmanship and materials for a period
of two years from the original shipment by MTS Automation.
During the warranty period, a defective amplifier unit will be repaired or replaced as outlined
below.
Before requesting return authorization, please try to verify that the problem is within the
amplifier, and not with external devices.
To arrange for repair or replacement, please contact:
•
You must provide the model and serial number from the labels on the amplifier.
•
You must provide an explanation as to why the unit is being returned.
•
You will be issued a return authorization number which must be marked on the return shipment and
on all correspondence.
MTS Automation Customer Service
(507) 354-1616
(800) 967-1785
Monday–Friday, 8:00–4:30 Central Time
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Summary of Contents for MTS Systems MAXPLUS 306
- Page 1 M A X P L U S 3 0 6 O P T I O N S P I N D L E A M P L I F I E R Application This manual is designed to help you install the MaxPlus™ 306 Option Spindle amplifier. Unpacking and Inspection Carefully unpack the amplifier and inspect it for visible damage.
- Page 2 Warranty and Service (continued) Service Under Warranty • Return your defective unit, freight prepaid, and it will be repaired and returned within two weeks of receipt via regular UPS, freight prepaid. • Upon request, a factory-repaired replacement unit will be sent via regular prepaid UPS, within 4 working days.
- Page 3 Introduction The 306 Spindle Amplifier was designed to be used with the MPM1902R-1368 spindle motor. This motor is wound in a WYE configuration with four windings in each leg. The legs are connected by a system of relay switches mounted on the side of the motor that change the motor KE and KT.
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Page 4: Specifications
Specifications Parameter Specification Operating Environment: Temperature 0 to 45° C (32 to 113° F) Maximum, Ambient Humidity 0 to 95% noncondensing Input/Output Interface: Analog Signals Velocity Command Input Differential input 0 to ±10 Vdc(15 Vdc Max) Velocity Output 1 volt per 1000 rpm Current Output 10 volts = Rated Current 24 Volt Logic:... -
Page 5: Side View
MPA-50-306-SPINDLE Mechanical Footprint NOTE .5 RECOMMENDED SIDE VIEW FRONT VIEW 14.6 13.6 External Thermal Switch External Shunt Connection 1.0" 2” Clearance Summary of Amplifier Dimensions MODEL A in. B in. C in. MPA-50-306 10.63 NOTE If front cover is attached, additional clearance of .2 should be allowed. - Page 6 Signal/Wiring Overview POWER FEEDBACK SHLD SHLD SLOW RESET HI-BUS MOTOR FEEDBACK AMPLIFIER SHORTS STALL CURRENT MARK ENCODER AT SPEED ORIENT RAMPS -COM +COM RESP SPD 1 SLOW SPD 0 RESET...
- Page 7 Feedback Wiring MOTOR FEEDBACK 100% SHIELDED SHIELD SHLD SHLD BLK/WHT THERM SWITCH BLU/WHT THERM SWITCH WINDING THERMOSTAT BLUE SIN GND YELLOW BLACK COS GND REFERENCE FREQUENCY 2KHZ 20-25 VP-P SIN/COS 0-5V MAX RMS YEL/WHT REF GND RED/WHT SLOW RESET HI-BUS MOTOR FEEDBACK AMPLIFIER...
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Page 8: Diagnostic Indicators
Diagnostic Indicators INDICATION MARK (RED) This is an output that comes ON at the resolver zero position and can be used in conjunction with alignment procedures. The zero position is about .5 degrees. CURRENT(BI-COLOR) This is a bi-colored LED that produces either red or green as a function of load. - Page 9 Simulated Encoder Signals For external counting or position control, a 9-pin D type female connector that has TTL differential outputs is provided. This simulates quadrature encoder channel A and channel B signals. A differential mark signal is also available. TYPICAL ENCODER CABLE 100% SHIELD (FOIL AND BRAID) ENCODER...
- Page 10 I/O Wiring and Descriptions The amplifier has five inputs and two outputs. These inputs and outputs are designed to interface to a 24 volt logic system. The amplifier is shipped so that the operation of the inputs is as follows. With no wires connected to ENB, SPD 0, or SPD 1, the amplifier is not enabled and normal operation will not occur.
- Page 11 Ramps are enabled by default. Grounding PIN 12 (ramps) disables ramping. Grounding PIN 13 (orient) causes the motor shaft to rotate at 1 rps. The four possible speed ranges are identified as LOW 1, 2, 3, and HI 4. The user has to devise the logic as to how to operate the relays based on the amplifier control inputs.
- Page 12 Analog Inputs, Outputs, and Adjustments Inputs There is one analog input channel for the command input. This is a differential input and it is summed with a TAC feedback amplifier that controls velocity. ANALOG INPUT WIRING EXAMPLE ENCODER –AUX SIGNAL -AUX +AUX SIGNAL +AUX...
- Page 13 The location of these adjustments is directly below the I/O wiring. NOTE The pot labeled AUX controls the speed of the spindle orient feature and need not be adjusted by the user. FEEDBACK AND I/O CONTROL ASSEMBLY ENCODER AT SPEED ORIENT RAMPS -COM...
- Page 14 Analog Inputs (Specific Interface Requirements) The analog input channel is a differential input amplifier to allow controllers that have differential output drivers a three wire connection that excludes potential ground loops. When differential modes of operation are used, the command input is based on 5 volts equaling maximum input and the analog ground from the external controller must be connected to the MPA drives GND connection.
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Page 15: Jumper Selections
Jumper Selections SIMULATED RESET ENCODER I/O WIRING FEEDBACK WIRING JP19 DIP 1 JP11 1 2 3 4 BI-POLAR ABSOLUTE (STANDARD) The position of this jumper determines the kind of dc voltage proportional to current that is a diagnostic signal at the (CUR) output of the I/O connector. With the shorting pin in the bipolar position, the output CUR signal is plus for positive current and minus for negative current. - Page 16 ORIENT DIRECTION JP11 CW (viewed from shaft end) (STANDARD) The position of this jumper determines which direction the motor will turn when the orient feature is enabled. RESETABLE RESETABLE FAULTS FAULTS (STANDARD) When JP9 is in the left position (default) the amplifier must be power cycled to reset any faults. In the right position, the faults can be cleared with the reset button or by toggling the enable input.
- Page 17 AC Input and Internal Protection A branch circuit disconnect must be provided in front of the amplifier. Model Three Phase Power MPA-50-306 45 amps 80-260 Vac AC power wiring must be consistent with any local codes, national electric codes, and be able to withstand the voltage current ratings applied.
- Page 18 Grounding The ac supply source for the amplifier is supposed to be bonded to earth ground. Typical WYE Secondary L1 (HOT) L2 (HOT) L3 (HOT) EARTH GROUND Typical Delta Secondary L1 (HOT) L2 (HOT) L3 (HOT) EARTH GROUND These are the two most typical transformer configurations and failure to ground these properly could void warranty.
- Page 19 There are too many transformers to depict all combinations. The MPA amplifier does not care where the earth ground is. This example is a delta secondary. Delta Secondary L1 (HOT) L3 (HOT) L2 (NEUTRAL) EARTH GROUND In this example, L2 became ground.
- Page 20 Power/Grounding Requirements The following information covers the grounding requirements of 3-phase servo amplifiers manufactured by MTS Automation. It has been found when an amplifier has been connected to a transformer with an ungrounded secondary, premature amplifier failure will occur. The 3-phase MPA amplifiers require the AC power (L1, L2, L3, and Ground) be derived from a transformer which has it's secondary intentionally bonded to earth ground.
- Page 21 Example 1 shows a typical factory configuration. It shows an ungrounded delta secondary and there is existing equipment already running. on line. This equipment could be simple 3-phase induction motors where an ungrounded secondary is not an issue. However, before a 3-phase MPA amplifier, or a machine utilizing 3-phase amplifiers, can be connected, an isolation transformer, with a grounded secondary must be installed.
- Page 22 Motor Control Wiring AMPLIFIER ENCODER AT SPEED ORIENT RAMPS -COM +COM RESP AMPLIFIER SPD 1 RANGE SLOW INPUTS SPD 0 RESET The amplifier has two inputs that determine the speed ranges. The motor has four 120 Vac inputs that have to be active based on the desired speed range. Amplifier Inputs Motor Inputs SPD 1...
- Page 23 Motor and Motor Relay Wiring...
- Page 24 Stator Wiring The locked rotor stator current is equal to the amplifier’s continuous rating. For either low speed or locked rotor conditions, the stator must withstand this continuous rating. Derating the stator wiring for three phase operation should not be done. Model Locked Rotor MPA-50-306...
- Page 25 Spindle Amplifier Shunt Load Regenerative energy during deceleration causes the normal voltage on the amplifiers bus to increase. The amount of energy is application dependent and relates to total inertia. The deceleration rate of the load determines the rate that voltage rises in the bus capacitors. The MPA-50-306 is equipped with interconnections for an external shunt load.
- Page 26 Shunt/Amplifier Wiring...
- Page 27 EXS-50-230 Mechanical Footprint 16.0" 15.5" 0.5" 1.0" 8.5" 9.5" 5.6"...
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Page 28: Thermal Characteristics
Thermal Characteristics The amplifiers are specified to operate at a 45° C ambient. This is not a maximum safe operating specification. There are no parts in the amplifier that can not operate at a 60° C temperature. The absolute maximum temperatures that the amplifier can operate at are determined by thermal switches on the bridge switch power devices (IGBT's) and on the shunt loads. - Page 29 Start-Up Once normal wiring is verified, power can be applied to the amplifier. Assure the inputs are what are required. The Enable Input will disable the amplifier if it is not connected. The CUR and RESP adjustments are turned down (CCW). CUR is 50% and RESP is minimal.