Product Description
Key Features
- Rated power and overload: Rated power: 5.50 kW | 7.50 hp LO and 4.00 kW | 5.00 hp HO. LO: 150% for 3s, 110% for 57s, 100% for 240s; HO: 200% for 3s, 150% for 57s, 100% for 240s.
- Input and output ratings: Input: 3 AC, 380 … 480 V +10 % -20 %, 47 … 63 Hz. Output: 3 AC, 400V IEC | 480V NEC 1), with maximum output current of 17.60 A.
- I/O and safety: The configuration has 6 standard digital inputs, 1 fail-safe digital input, 1 relay changeover contact, 1 transistor output, 1 differential input, and 1 non-isolated analog output. Safe Torque Off is integrated.
- Communication and control: Communication: USS/MODBUS RTU. Control techniques include V/f linear / square-law / parameterizable, V/f with flux current control (FCC), V/f ECO linear / square-law, and sensorless vector control.
- Connections and installation: Line-side and motor-end connections use plug-in screw terminals. The DC link uses plug-in screw terminals with a maximum line length of 15 m (49.21 ft); PE connection is on the housing with M4 screw.
- Physical variant and protection: Frame size: FSB. Protection: IP20 / UL open type. Width: 100 mm (3.94 in); depth: 203 mm (7.99 in). Cooling uses an integrated fan.
Technical Summary
| Product lifecycle | Active Product |
|---|---|
| Input voltage | 380 … 480 V +10 % -20 % |
| Input frequency | 47 … 63 Hz |
| Rated power (LO) | 5.50 kW | 7.50 hp |
| Rated power (HO) | 4.00 kW | 5.00 hp |
| Rated current (LO) | 12.50 A |
| Rated current (HO) | 8.80 A |
| Communication | USS/MODBUS RTU |
| Digital inputs | 6 standard digital inputs; 1 fail-safe digital input |
| Protection | IP20 / UL open type |
| Frame size | FSB |
| Output frequency for vector control | 0 … 240 Hz |
Frequently Asked Questions
Which exact ratings should be confirmed for Siemens 6SL3210-1KE21-3UB1?
Confirm 3 AC 380 … 480 V +10 % -20 % input, 47 … 63 Hz, 5.50 kW | 7.50 hp LO, and 4.00 kW | 5.00 hp HO.
Which communication and I/O interfaces are supplied?
Communication is USS/MODBUS RTU. The unit has 6 standard digital inputs, 1 fail-safe digital input, 1 relay changeover contact, 1 transistor output, 1 differential input, and 1 non-isolated analog output.
What physical and connection details should be checked?
Check frame size FSB, IP20 / UL open type protection, width 100 mm (3.94 in), depth 203 mm (7.99 in), and plug-in screw terminals on the line side, motor end, and DC link.
