20a20
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Analog Servo Drive Description 20A20 Power Range The 20A20 PWM servo drive is designed to drive brush type DC motors at a high switching frequency. A single red/green LED indicates operating status. The drive is fully protected against over-voltage, under voltage, over-current, over-heating and short-circuits across motor, ground and power leads. Furthermore, the drive can interface with digital controllers or be used stand-alone and requires only a single unregulated DC power supply. Loop gain, current limit, input gain and offset can be adjusted using 14turn potentiometers. The offset adjusting potentiometer can also be used as an on-board input signal for testing purposes. Peak Current 20 A Continuous Current 10 A Supply Voltage 40 - 190 VDC See Part Numbering Information on last page of datasheet for additional ordering options. Features Four Quadrant Regenerative Operation On-Board Test Potentiometer DIP Switch Selectable Modes Offset Adjustment Potentiometer Adjustable Current Limits Adjustable Input Gain High Switching Frequency Drive Status LED Differential Input Command Current Monitor Output Digital Fault Output Monitor Directional Inhibit Inputs for Limit Switches MODES OF OPERATION Current Voltage IR Compensation Velocity COMMAND SOURCE ±10 V Analog Release Date: 11/30/2011 Revision: 2.01 FEEDBACK SUPPORTED Tachometer (±60 VDC) COMPLIANCES & AGENCY APPROVALS UL cUL CE Class A (LVD) CE Class A (EMC) RoHS ADVANCED Motion Controls · 3805 Calle Tecate, Camarillo, CA, 93012 ph# 805-389-1935 · fx# 805-389-1165· www.a-m-c.com Page 1 of 9

MOTION CONTROLS 25A SERIES FUNCTIONAL BLOCK DIAGRAM TACH GAIN CURRENT REFERENCE CURRENT LOOP GAIN INTEGRATOR UOLTAGE FEEDBACK HIGH UOLTAGE CURRENT FEEDBACK GROUNDS ARE INTERNALLY CONNECTED CURRENT NONITOR MODE SELECTION TABLE LED GREEN - NORMAL OPERATION, LED RED - FAULT RECOMMENDED SETTING FOR CURRENT MODE - POT1 FULLY CCW, P0T3 FULLY CW AMPLIFIERS ARE SHIPPED IN CURRENT MODE WITH MAXIMUM CURRENT SETTINGS FOR OTHER SWITCH FUNCTIONS SEE SWITCH DESCRIPTION * OPTIONAL USER INSTALLED THROUGH HOLE COMPONENT SW2 SHOULD BE OFF FOR MOST APPLICATIONS

Analog Servo Drive 20A20 SPECIFICATIONS Description Power Specifications Units DC Supply Voltage Range VDC DC Bus Over Voltage Limit Value 40 - 190 VDC 195 Maximum Peak Output Current1 A 20 Maximum Continuous Output Current A 10 Maximum Continuous Output Power W 1805 Maximum Power Dissipation at Continuous Current W 95 Minimum Load Inductance (Line-To-Line)2 µH 250 Low Voltage Supply Outputs - Switching Frequency kHz Description Command Sources ±5 VDC (3 mA) 22 Control Specifications Units - Value ±10 V Analog Feedback Supported - Tachometer (±60 VDC) Commutation Methods - Brush Type Modes...

Analog Servo Drive 20A20 PIN FUNCTIONS P1 - Signal Connector Pin Name 1 2 3 4 5 6 7 +5V 3mA OUT SIGNAL GND -5V 3mA OUT +REF IN -REF IN -TACH IN +TACH / GND 8 CURRENT MONITOR 9 CURR REF OUT 10 CONT CURRENT LIMIT 11 INHIBIT IN 12 13 +INHIBIT IN -INHIBIT IN 14 FAULT OUT 15 16 NC NC Description / Notes I/O ±5 V @ 3 mA low power supply for customer use. Short circuit protected. Reference ground common with signal ground. Differential Reference Input (±10 V Operating Range, ±15 V Maximum Input) Negative Tachometer Input (Maximum ±60 V). Use signal ground for positive input. Positive Tachometer...

Analog Servo Drive 20A20 HARDWARE SETTINGS Switch Functions Switch 1 2 3 4 Setting Description On Voltage feedback. Mode dependent (see mode selection table below). Current loop integral gain. Activates or deactivates integration. OFF by default. Outer loop integration. Activates or deactivates integration. ON, by default, for current mode and OFF for other modes. Test/Offset. Switches the function of the Test/Offset pot between an on-board command input for testing or a command offset adjustment. OFF by default. Off On Off Inactive Active Inactive Active Test Offset Mode Selection Table...

Analog Servo Drive 20A20 Through-hole Components† Location Description Current Loop Integrator. Through-hole capacitor that can be added for more precise current loop tuning. See section below on Tuning with Through-hole components for more details. Velocity Loop Integrator. Through-hole capacitor that can be added for more precise velocity loop tuning. See section below on Tuning with Through-hole components for more details. Tachometer Input Scaling. Through-hole resistor that can be added to change the gain of the tachometer input. See section below on Tachometer Gain for more details....

Analog Servo Drive 20A20 MECHANICAL INFORMATION P1 - Signal Connector Connector Information Details Included with Drive Mating Connector 16-pin, 2.54 mm spaced, friction lock header Molex: P/N 22-01-3167 (connector) and P/N 08-50-0114 (insert terminals) Yes 15 NC 13 -INHIBIT IN 11 INHIBIT IN 9 CURR REF OUT 7 +TACH / GND 5 -REF IN 3 -5V 3mA OUT 1 +5V 3mA OUT 2 SIGNAL GND 4 +REF IN 6 -TACH IN 8 CURRENT MONITOR 10 CONT CURRENT LIMIT 12 +INHIBIT IN 14 FAULT OUT 16 NC P2 - Power Connector Connector Information Mating Connector Details Included with Drive 5-port, 5.08 mm spaced, screw terminal...

MOTION CONTROLS

Analog Servo Drive 20A20 PART NUMBERING INFORMATION 20 A 20 Additional Options* Peak Current -ANP: -INV: -QD: -QDI: Maximum peak current rating in Amps. Peak Voltage Analog Position Loop Inverted Inhibit Quick Disconnect Quick Disconnect w/ Inverted Inhibit Peak voltage rating scaled 1:10 in Volts. Revision Isolation Option** Assigned a letter (A through Z) by manufacturer. I: Optical Isolation Power Supply Command : DC Power Supply AC: AC Power Supply : Analog Command DD: PWM Command * Options available for orders with sufficient volume. Contact ADVANCED Motion Controls for more...