LS-173 Brushless Servo Amplifier

LS-173 is a single-axis motion controller with integrated servo amplifier designed for applications using brushless (AC) or brush-commutated (DC) motors up to 1 HP. No jumpers or setup is required to switch between both types of motors. Trapezoidal brushless motor commutation is performed automatically if hall sensors are connected to the unit.

Up to 31 intelligent servo drives can be controlled over a multi-drop full duplex RS-485 network in a distributed motion control environment. Standard RJ-45 connectors and commercially available cables are used for daisy chaining of the modules.

LS-173 is equipped with various safety features such as short circuit protection for the motor and amplifier, over travel limit switch inputs, emergency stop input, over and under voltage shutdown. The maximum motor output current can be limited by setting of dipswitches.

Features

• Motors supported:
  • Brushless 60/120° commutated (AC)
  • Brush-commutated (DC)
• 12A peak, 8A continuous output current
• 12 to 90V single power supply
• 32-bit position, velocity, acceleration, 16-bit PID filter gain values
• Comprehensive motor output short-circuit protection:
  • Output to output
  • Output to ground
  • Output to power
• Adjustable motor current limit
• Over/under voltage shutdown
• Overheating protection
• Emergency stop input
• Forward and reverse overtravel inputs
• Communication speed 19.2 - 115.2 KBps
• Servo rate 2 kHz
• PWM frequency 20 kHz
• Command rate up to 1000/sec
• Encoder transition rate up to 500kHz.
• Small footprint (5” x 3.3” x 0.85”)

Technical Spectifications

POWER SUPPLY VOLTAGE	12 to 90 V DC, 100V Absolute Maximum
MAX MOTOR OUTPUT CURRENT
Peak	12A
Continuous	8A
MAX MOTOR OUTPUT VOLTAGE	Vout= 0.96(POWER (+)) - 0.17(Iout)
MIN LOAD INDUCTANCE	200µH
PWM SWITCHING FREQUENCY	19,512 KHz
SERVO RATE	0.512 msec
SERIAL BAUD RATE	19.2 - 115.2 Kbps (faster communication rates are possible at lower servo rates)
OPTIONAL OPEN COLLECTOR BRAKE OUTPUT    Max voltage applied to output    Max current load	48V 0.3A
INPUTS
Encoder & Commutation	TTL with 1K pull-up to 5V
Digital Inputs	LOmin=-1V, HImax=48V
ENCODER	Quadrature with index
COMMUTATION	Hall sensors 60/120°
INDICATORS   Red LED (two intensity levels)	Power 'ok' - low intensity Servo 'ok' - high intensity
PROTECTION
Short circuit	Motor output to motor output
	Motor output to POWER GND
	Motor output to POWER (+)
Overheating shut off	Activated at 80 °C
FIRE-SAFETY
Internal fuse	10A Quick blow
POWER DISSIPATION (max)	30W
THERMAL REQUIREMENTS
Storage temperature range	-30 to +85 °C
Operating temperature range	0 to 45 °C
MECHANICAL
Size	L=5.00", H=3.30";, D=0.85";
Weight	0.55lb. (250gr.)
MATING CONNECTORS
Power & Motor	Magnum EM2565-06-VL or Phoenix MSTB 2.5/6-ST-5.08
Inputs & Outputs	Molex 22-01-3077 housing with 08-50-0114 pins (7 pcs.)
Encoder & Commutator	Molex 22-01-3107 housing with 08-50-0114 pins (10 pcs.)
Communication	8 pin RJ-45