20
Rev. 1.0
8/26/2015
STM11 Hardware Manual
4.2 Technical Specifications
Power Amplifier
Amplifier Type
Dual H-Bridge, 4 Quadrant
Current Control
4 state PWM at 16 KHz
Output Torque
STM11□-1RE up to 50 mN.m
STM11□-2RE up to 80 mN.m
STM11□-3RE up to 100 mN.m
Power Supply
External 24 VDC power supply required
Input Voltage Range
15 - 30 VDC min/max (nominal 24 VDC)
Protection
Over-voltage, under-voltage, over-temp, internal motor shorts (phase-to-phase, phase-to-ground)
Idle Current Reduction
Reduction range of 0 - 90% of running current after a delay selectable in milliseconds
Ambient Temperature
0 - 40°C (32 - 104°F) when mounted to a suitable heatsink
Humidity
90% non-condensing
Controller
Current Control
Advanced digital current control provides excellent high speed torque
Microstep Resolution
Software selectable from 200 to 51200 steps/rev in increments of 2 steps/rev
Speed Range
Speeds up to 50 rps
Distance Range
Over 10,000,000 revolutions (at 200 steps/rev)
Noise Filtering
Programmable hardware digital noise filter. Software noise filter
Serial Commanding
Supports Serial Command Language (SCL)
Encoder Feedback
4000 counts/rev encoder feedback
Non-Volatile Storage
Configurations are saved in FLASH memory on-board the DSP
X1/Step
Input: 5 - 24 VDC, single-ended signals, max. pulse frequency 1 MHz
Functions: Step, CW Step, A Quadrature, CW Limit, CW Jog, Run/Stop, general purpose input;
adjustable bandwidth digital noise rejection filter
Connect with NPN type output ONLY
X2/Direction
Input: 5 - 24 VDC, single-ended signals, max. pulse frequency 1 MHz
Functions: Dir, CCW Step, B Quadrature, CCW Limit , CCW Jog, general purpose input;
adjustable bandwidth digital noise rejection filter
Connect with NPN type output ONLY
X3/Enable
Inputs: 5 - 24 VDC, single-ended signals, max. pulse frequency 1 MHz
Functions: Enable, Change speed, general purpose input
Connect with NPN type output ONLY
X4/Alarm Reset
Inputs: 5 - 24 VDC, single-ended signals, max. pulse frequency 1 MHz
Functions: Alarm reset; general purpose input
Connect with NPN type output ONLY
Y1/Fault
Open drain output, maximum current 100mA with maximum voltage of 30VDC
Functions: Fault detection, general purpose
Y2/Brake
Open drain output, maximum current 100mA with maximum voltage of 30VDC
Functions: Brake, Moving, Tach Output, general purpose
Communication Interface
RS-422/485
Weight
STM11□-1RE: 118 g
STM11□-2RE: 168 g
STM11□-3RE: 218 g
Rotor Inertia
STM11□-1RE: 9 g•cm
2
STM11□-2RE: 12 g•cm
2
STM11□-3RE: 18 g•cm
2
