# Technical information ### General
General
Dimensions166 mm x 106 mm x 56 mm (excluding connectors and feet)
Weight0.5 kg
Protection classIP 20
TemperatureOperation 10°C to 60°C, Storage -10°C to 85°C
Power requirements48 Vdc ± 5% Power supply is included.
Power consumption48 W max.
Safety complianceEN 61010-1-2010
EMC complianceEmissions EN61800-3:2018, EN55032 Class B, 3m (As 61800-3:2018, Table 17, Category C1, first environment) Immunities, EN55035, basic electromagnetic environment
Motor driver
Type2 phase bipolar stepper motor driver for 4-lead motors
Phase currentUp to 1 A RMS, adjustable in 30 mA steps
Source voltage67 Vdc maximum 48 Vdc supply is boosted to 67 Vdc. Boost function can be disabled if required.
ResolutionFull, 8, 16, 32, 64, 128, 256 micro-stepping Stops on full step positions only, micro-stepping is used for control of resonance and smoother step transition.
Step frequency1 Hz to 15 kHz
ProtectionShort to ground and phase to phase
Encoder (Where fitted)
Supported typesDigital incremental and BiSS absolute
Power5V at 250 mA max. is available to power the encoder, protected by self-resetting fuse.
ConnectionFemale 26 way high density D-Sub. Encoder connects via adapter cable according to encoder type. Adapter cables for supported encoders are available from AML.
Incremental encoder supportDigital (RS422) incremental encoders having differential A, B and Z signals. Single ended P and Q limits signals are supported. Maximum clock rate 1 MHz.
Absolute encoder support26 bit BiSS-C (support for other bit depths may be added via firmware update)
Motor temperature measurement
TypeSelectable PT100 RTD or K-Type thermocouple
Range-200°C to 240°C
Accuracy±15 °C for thermocouple, ±5 % for RTD
Fault detectionRTD: Open and short-circuit Thermocouple: Open circuit only
Operating modes
• Remote – Control and configure via USB, Ethernet or Serial • Step, Direction Enable (SDE) – For connection to an external motion controller or PLC • Bake – Programmed cycle to heat the motor while stopped to drive off adsorbed gasses
Control interfaces
USBUSB 2.0 Full Speed via USB-C connector Virtual COM port and firmware update interface
Ethernet10/100 Base-T, auto MDI-X, RJ45 8P8C connector Telnet (port 11312)
Serial communicationSelectable RS232 or RS485 mode (shared pins) Dual RJ45 8P8C connectors allow daisy chaining multiple devices in RS485 mode User selectable termination in RS485 mode 115200 default and maximum baud rate
Software
CompatibilityWindows 10 or later
APIC# and Python APIs are available
SDE (step, direction enable) interface
TypeOptocoupled, common cathode
Levels3.3 Vdc to 5 Vdc maximum Higher voltages require external current limiting resistor
Maximum frequency2 MHz at 50% duty Maximum full-step rate limited to 7.8 kHz for micro-step resolution of 256.
Limits
Quantity2
Compatible switch typesMechanical NO or NC (polarity selectable)
ProtectionWithstands continuous short to 12 V maximum
Joystick
ConnectionFront panel mounted 4P4C jack with auto-detection of connection state
Input typeActive low, short to ground to activate function
MiscellaneousOpen circuit voltage 3.3 V, source current < 3.5 mA
### Mechanical All dimensions are in millimetres. [ ![SMD4 datasheet drawing](https://bookstack.vps-da8d40f3.arunmicro.com/uploads/images/gallery/2023-11/scaled-1680-/smd4-datasheet-drawing.PNG) ](https://bookstack.vps-da8d40f3.arunmicro.com/uploads/images/gallery/2023-11/smd4-datasheet-drawing.PNG) ### Scope of delivery
**Qty.****Item**
1SMD4
1USB Type-A to USB Type-C lead
1Power supply
### Accessories The following accessory items are available from AML.
**Order Code** **Item**
SMD3JOY Joystick (compatible with SMD4)
CAB-D15D9 SMD4 Motor Cable, 3m, D-Sub 15 Male to D-Sub 9 Female
CAB-D15MLF SMD4 Motor Cable, 3m, D-Sub 15 Male to MLF18
CAB-3D15MLF SMD4 Motor Cable, 3m, 3X D-Sub 15 Male to MLF18
CAB-D26D15 SMD4 Encoder Cable, Incremental, 3m, HD D-Sub 26 Male to D-Sub 15 Female
CAB-D26D9 SMD4 Encoder Cable, Absolute, 3m, HD D-Sub 26 Male to D-Sub 9 Female