MBL Brushless Servo Amplifier

The MBL Series Amplifier is a single axis MOSFET PWM switching amplifier designed to drive trapazoidal brushless servo motors.

The MBL series amplifier features complete isolation from the power stage thus allowing the drive to operate directly off 115 VAC without the need for an isolation transformer. The differential H-bridge configuration provides precise 4 quadrant control.

The MBL amplifier operates at a switching frequency of 20 Khz which eliminates audible noise and provides high frequency current response. The efficiency of the power amplifier is 95% due to the low resiwstance and minimal switching losses of our MOSFET power transistors.

Features

• Extremely small packaging
• Isolated power surge
• 2 options for the command connectors
• 20 KHz Pulse Width Modulated operation
• Horizontal or vertical mounting
• On-board power supply for both logic and hall sensors
• OEM and End User packaging
• High gain - high band width current loop
• Protection against:
  • over and under voltage
  • amplifier over temperature
  • over current
  • motor over temperature
• LED fault indicators
• Low cost

Specifications

Supply Voltage	100 - 190 VDC
Continuous Current	12 Amperes
Peak Current	24 Amperes
Switching (PWM) Frequency	20 KHz
Maximum Motor Voltage	97% of Supply Voltage
Command Input Scaling	User selectable
Maximum Command Voltage	±10 Volts
Tachometer Input Format	Single Ended
Maximum Tachometer Voltage	±100 Volts
Tachometer to Command Scaling	0.5 to 3.2 Volts/Volt
Maximum Shutdown In Voltage	20 Volts
Maximum Shutdown Out Voltage	20 Volts

Dimensions

Connector Diagram

MBL Series Ordering Information

Amplifier Model Number	Output for Each Axis			Recommended Servo Motors
	Output Voltage Range	Continuous Current	Peak Current	Torque Continuous	Torque Peak	Rated Speed	Part Number
MBL16024*	100 to 165 VDC	12	24	**	**	**	**

* Specify H after model number for amplifier with metal enclosure
               HP after model number for housed with power supply and power phase on board
               Leave blank for board level (no sheet metal enclosure)
** McFarland Associates does not currently stock brushless servo motors for this drive