Application Scenarios
A packaging machine performs thousands of short pick-and-place, indexing, and registration moves each shift. The motion profile may spend most of its cycle at low speed, but each index requires rapid acceleration, precise deceleration, and reliable holding torque. A drive selected only by continuous power rating may operate without thermal problems during steady speed, yet still trip during the brief current peaks that occur during acceleration. The maintenance issue is not simply motor power; it is whether the drive can provide the correct peak current for the duty cycle.
The DST1405 addresses this condition with 8.0 A RMS continuous output and 24.0 A RMS peak output—approximately three times the continuous rating. This peak capability supports rapid acceleration and deceleration without requiring a disproportionately large continuous-current drive. On a carton folder-gluer or indexing conveyor, the DST1405 can provide the short-duration current required for registration moves while remaining in a compact 62 mm wide frame.
A second common situation involves cabinet space and safety integration. A machine builder may need a high-dynamic servo axis but cannot justify a larger drive or a separate safety controller. The DST1405 accepts a 380–480 VAC three-phase supply and supports Safe Torque Off terminals. In an emergency-stop or guard-interlock application, this can allow the drive to remove torque safely without requiring an additional safety relay for every axis.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | DST1405; DST1405伺服驱动1 appears to combine the OEM model with a reseller or internal suffix and is not documented as a standard factory variant |
| Manufacturer | Emerson / Control Techniques; now part of Nidec Motion Control |
| Product Family | Digitax ST |
| Product Category | Compact single-axis AC servo drive / servo amplifier |
| Frame Size | Frame size 1 |
| Input Voltage | 380–480 VAC, three-phase, ±10% |
| Input Frequency | 48–65 Hz |
| Input Phases | 3 |
| Continuous Output Current | 8.0 A RMS |
| Peak Output Current | 24.0 A RMS |
| Approximate Motor Suitability | 3–4 kW permanent-magnet AC servo class; final selection depends on motor and duty profile |
| PWM Switching Frequency | 3, 4, 6, 8, or 12 kHz; 6 kHz is the published rated setting |
| Control Modes | Torque, speed, and position |
| Control Bandwidth | Current-loop bandwidth approximately 1100 Hz; speed-loop bandwidth approximately 160 Hz |
| Speed Control Accuracy | Approximately 0.01% |
| Speed Resolution | 0.001 rpm |
| Encoder Input | Incremental, absolute, SinCos, Hiperface, EnDat, and SSI supported; resolver requires the appropriate option module |
| Encoder Throughput | Up to 500 kHz |
| Analog Inputs | One dedicated ±10 V input with 16-bit plus sign resolution; two configurable analog inputs |
| Analog Outputs | Two configurable outputs for 0/4–20 mA or ±10 V signals |
| Digital Inputs | Three dedicated inputs plus three bidirectional inputs/outputs |
| Relay Output | One Drive OK relay |
| Safe Torque Off | Onboard STO; documented safety performance includes SIL 3, PL e, and Category 3 in relevant variants |
| Drive Current | 9.9 A RMS from the line at the 6 kHz PWM setting |
| Internal Brake Chopper | 70 Ω at 25°C; 50 W average over 60 s |
| Enclosure Rating | IP20 / UL Type 1 / NEMA 1 |
| Dimensions | 62 × 322 × 226 mm |
| Weight | 2.1 kg excluding keypad and option modules |
| Mounting | Panel or chassis mounting |
| Operating Temperature | 0–50°C; output current must be derated above 40°C |
| Storage Temperature | -40 to +70°C |
| Humidity | Up to 95% relative humidity, non-condensing |
| Altitude | 0–3000 m |
