6SL3244-0BB12-1PA1 | SINAMICS CU240E-2 DP Control Unit
The 6SL3244-0BB12-1PA1 is a SINAMICS control unit from Siemens. It is the CU240E-2 DP variant with a PROFIBUS DP interface. The unit plugs onto a SINAMICS Power Module. It takes DC 24 V from the Power Module or from an external DC 20 to 29 V supply. Max current draw is 0.50 A and power loss is 5.50 W. The control unit covers V/f, FCC, ECO, sensorless vector and encoderless torque control. It fits standard pump, fan and conveyor duty. The compact IP20 housing measures 73 x 199 x 46 mm. Engineers use it where PROFIBUS DP is the plant backbone.
Control Modes at a Glance
- V/f linear, square-law and parameterizable
- V/f with flux current control (FCC)
- V/f ECO linear and square-law
- Sensorless vector control
- Encoderless torque control
- No encoder-based vector or torque mode
I/O Configuration
- Standard digital inputs: 6, switch 0 to 1 at 11 V, 1 to 0 at 5 V
- Fail-safe digital input: 1, uses 2 standard DI
- Relay outputs: 2 changeover contacts
- Analog/digital inputs: 2, differential
- Analog outputs: 2, non-isolated
- Signal cable: 0.05 to 1.50 mm² (AWG 28 to 16)
Electrical and Communication Data
- Article number: 6SL3244-0BB12-1PA1
- Brand: Siemens
- Series: SINAMICS G120 control unit
- Fieldbus: PROFIBUS DP
- Supply: DC 24 V via Power Module
- External supply: DC 20 to 29 V
- Max current: 0.50 A
- Power loss: 5.50 W
Mechanical and Environmental Data
- Width: 73.0 mm (2.87 in)
- Height: 199.0 mm (7.83 in)
- Depth: 46.0 mm (1.81 in)
- Net weight: 0.49 kg (1.08 lb)
- Protection: IP20 / UL open type
- Operating temperature: -10 to 55 °C (14 to 131 °F)
- Storage temperature: -40 to 70 °C (-40 to 158 °F)
- Relative humidity: 95 % max in operation
Standards and Approvals
- CE, low-voltage directive 2014/35/EC
- UL and cUL listed
- RCM compliant
- SEMI F47 compliant
Which Drives Does It Fit?
- SINAMICS G120 Power Modules with the CU240E-2 slot
- Pump and fan panels on PROFIBUS DP
- Conveyor and material handling lines
- Retrofit jobs that keep the existing DP network
- Standard duty machines without encoder feedback
Commissioning Notes
- Set the PROFIBUS address before you power the bus.
- Use the correct GSD file in the PLC project.
- Check 24 V polarity on the external supply.
- Route signal cable away from motor leads.
- Verify relay output ratings against the load.
- Run a static identify after wiring.
FAQ
Q: Which Power Modules pair with this control unit?
A: Use SINAMICS G120 Power Modules that accept the CU240E-2. Check the module frame size and the 24 V interface before you order.
Q: Can I run the unit without an external 24 V supply?
A: Yes. The Power Module can feed the DC 24 V rail. Use an external DC 20 to 29 V supply when you need the control unit live during bus setup.
Q: My PROFIBUS master shows the drive but no I/O. What should I check?
A: Confirm the GSD file and the telegram type. Check the DP address on the unit. Verify the bus termination and the 24 V rail.
Q: Does this version support encoder feedback?
A: No. The CU240E-2 DP is encoderless. For encoder vector or torque control, choose a control unit with the encoder interface option.
Q: How do I choose between DP and PN variants?
A: Match the plant bus. Keep PROFIBUS DP where the network already runs DP. For new Ethernet-based lines, pick the PROFINET variant.
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