DC servo drive
Elmo Motion Control Platinum Solo Bell DC servo drive
Panel-mounted Platinum-family servo drive with continuous currents up to 25 A, up to 2 kW continuous, DC supplies up to 195 V, up to three feedback devices and SIL 3 / PL e functional safety with FSoE.
Key specifications
| Voltage (max) | 195 V |
|---|---|
| Ingress protection | IP00 |
| Power (max) | 2,000 W |
| Feedback | BiSS, EnDat 2.1/2.2/3, HIPERFACE, HIPERFACE DSL, incremental, SIN/COS, SSI, resolver, digital Halls, Tamagawa, Panasonic, Sanyo Denki, ACURO; safe BiSS/EnDat/DSL/ACURO |
| Fieldbus | EtherCAT (F); CAN versions announced |
| Continuous current (max) | 25 A |
| Weight | 100 g |
| Safety | IEC 61800-5-2 SIL 3, Cat 4 / PL e, FSoE; STO, SS1, SS2, SOS, SLS, SLP, SLT, SBC |
| Safe torque off | yes (hardware STO SIL 3 on capability O) |
Summarised in our own words from Bosch Rexroth AG (Bosch Group)'s published data; series maxima, individual models vary. Last checked 2026-10-30. Source 1
Specify Motion is not affiliated with Bosch Rexroth AG (Bosch Group). Elmo Motion Control and Platinum Solo Bell are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
Typical applications
Alternatives that meet or exceed these figures
Engineers often come to us with an Elmo Motion Control part number and leave with an alternative that is easier to source, quicker to deliver or a better fit for the machine. These 3 series from our supply network are the closest match on published figures.
Single-axis 24-70 VDC servo drives from 5 to 60 Arms (180 A peak), in RS (Modbus/pulse/analogue) and CAN (CANopen/analogue) versions. They drive brushless, brushed and PMSM motors including ELVM, with STO SIL3 and backup logic supply on the 40/60 A models.
| Published maximum | Platinum Solo Bell | ELD2 Series Low-Voltage DC Servo Drives |
|---|---|---|
| Continuous current | 25 A | 60 A meets or exceeds |
| Peak current | — | 180 A |
| Power | 2,000 W | 2,500 W meets or exceeds |
| Axes | — | 1 |
Leadshine's EL7 platform spans 220 VAC drives from 400 W to 2 kW, 400 VAC drives to 7.5 kW and an 11-22 kW high-power range, all with STO and EtherCAT, Modbus/pulse or PROFINET variants.
| Published maximum | Platinum Solo Bell | EL7S / EL7 Series AC Servo Drives |
|---|---|---|
| Continuous current | 25 A | 44 A meets or exceeds |
| Peak current | — | 88 A |
| Power | 2,000 W | 22,000 W meets or exceeds |
| Axes | — | 1 |
The second-generation Kinco JD drive, paired with SMK motors from 50 W to 7.5 kW. It accepts a very wide range of encoder protocols plus a second encoder, runs CANopen or EtherCAT, and has STO SIL3 / PL e on every model.
| Published maximum | Platinum Solo Bell | JD2 Series AC Servo Drives |
|---|---|---|
| Continuous current | 25 A | 26 A meets or exceeds |
| Peak current | — | 65 A |
| Power | 2,000 W | 7,500 W meets or exceeds |
| Axes | — | 1 |
Figures are the highest published for each series and are not always measured the same way. A higher figure is not automatically a better choice: mounting, duty cycle, feedback, connectors and approvals matter too. An engineer will check the fit against your application before recommending anything.
What a DC servo drive is
A DC servo drive controls a servo motor from a low-voltage DC supply, typically between about 12 and 100 V, such as a battery or a DC power supply. It uses a PWM power stage to regulate current in brushless or brushed motors, with current, velocity and position loops closed using encoder or Hall feedback. Many are compact, some palm-sized, with CANopen, EtherCAT, Modbus or pulse inputs. Higher current is needed for the same power than with mains drives.
When engineers choose a DC servo drive
Choose a DC servo drive for mobile robots, AGVs, battery equipment, medical devices and machines designed around safety extra low voltage. It allows simple distribution and safe access to live parts. The trade-offs are current and power: high currents need heavy cables and good connections, so power is typically limited to a few kilowatts. For mains-powered machines above that, an AC servo drive is usually more economical.
How to specify the Elmo Motion Control Platinum Solo Bell
Send these with your enquiry and an engineer can confirm the right Platinum Solo Bell variant or an equivalent:
- Supply voltage range (V DC)
- Continuous and peak current (A)
- Motor type: brushless, brushed, linear
- Feedback: encoder, Hall or absolute
- Interface: CANopen, EtherCAT, Modbus, pulse
- Safety functions and STO
- Size, mounting and cooling
Common mistakes to avoid
- Ignoring battery voltage swing from full to low charge
- Undersizing cables and connectors for high current
- Forgetting regenerative energy into the battery
- Overlooking grounding and EMC on low-voltage systems
Elmo Motion Control Platinum Solo Bell: frequently asked questions
What is the Elmo Motion Control Platinum Solo Bell?
Panel-mounted Platinum-family servo drive with continuous currents up to 25 A, up to 2 kW continuous, DC supplies up to 195 V, up to three feedback devices and SIL 3 / PL e functional safety with FSoE. Published series figures include voltage 195 V, power 2,000 W, continuous current 25 A, weight 100 g. It is made by Bosch Rexroth AG (Bosch Group); Specify Motion can help source it or propose an equivalent.
Who makes the Elmo Motion Control Platinum Solo Bell?
The Elmo Motion Control Platinum Solo Bell is made by Elmo Motion Control (Bosch Rexroth AG (Bosch Group)) and is listed here for engineers comparing options. Specify Motion is not affiliated with Bosch Rexroth AG (Bosch Group); brand names are used only to identify the product.
What is the voltage of the Elmo Motion Control Platinum Solo Bell?
The published series maximum voltage is 195 V. Individual models and sizes in the Platinum Solo Bell range vary, so check the exact variant against your duty cycle, mounting and environment, or ask our engineers to confirm the right size for you.
Is there an alternative to the Elmo Motion Control Platinum Solo Bell?
Yes. On published figures, Leadshine ELD2 Series Low-Voltage DC Servo Drives and Leadshine EL7S / EL7 Series AC Servo Drives are the closest match from our supply network. An engineer confirms the fit against your application before recommending anything.
Can a DC servo drive return energy to a battery?
Yes, during braking the motor regenerates energy into the DC bus, and with a battery it can be absorbed if the battery management system allows charging. Without a battery or with a full battery, voltage rises, so a braking resistor or clamp circuit may be needed. Check the drive's overvoltage threshold.
What size DC drive do I need?
Size the drive from the motor's continuous and peak current demands, the supply voltage range and the duty cycle. Allow margin above the motor's peak current and check how long the drive can deliver peak. Then confirm the interface and feedback types match the motor and controller.
Further reading: How to select a servo drive · How to select a pcb mount servo drive · Servo drives
Other dc servo drive series
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