Description
The Kollmorgen S7240F-NANAPA belongs to the S700 series of high-performance, digital servo amplifiers. This specific configuration features a 24 A continuous current rating and integrates dual-channel functional safety (Safe Torque Off) along with onboard motion control capabilities. It handles complex, high-dynamic positioning profiles for synchronous servomotors, linear motors, and induction motors.
Commercial Availability & Terms
- Condition: New Original (Factory Sealed) or Refurbished (load-tested and output-verified)
- Availability: In stock; typically leaves our warehouse within 24 to 48 hours
- Warranty: 12-month comprehensive warranty
- Pricing Note: List price is indicative and shifts with component availability. Reach out to our application team for an official, firm quote.
Technical Specifications
| Parameter | Value / Specification |
| Manufacturer | Kollmorgen |
| Model Code | S7240F-NANAPA |
| Series | S700 Digital Servo Amplifier |
| Rated Output Current | 24 A continuous (A_{rms}) |
| Peak Output Current | 48 A (A_{rms}) for a maximum of 5 seconds |
| Mains Input Voltage | 3-phase 208 to 480 V AC, 50/60 Hz |
| DC Bus Voltage | Up to 675 V DC (dependent on mains voltage input) |
| Auxiliary Supply | 24 V DC (15% to 20% tolerance range) for logic supply |
| Safety Integration | STO (Safe Torque Off), SIL3 / PLe compliant dual-channel |
| Dimensions (H \times W \times D) | 345 mm \times 100 mm \times 243 mm |
| Enclosure Rating | IP20 compliance |
Coding and Suffix Nomenclature Breakdown
The model designation S7240F-NANAPA details the drive’s built-in components and software profile based on the Kollmorgen S700 selection matrix:
- S7: S700 Series Digital Servo Platform.
- 24: 24 A continuous output rating.
- 0: Standard customized execution or default platform option.
- F: Identifies specific functional hardware attributes, including specific onboard cooling or filter setups (verify precise thermal limitations via the system hardware manual).
- NA: Standard configuration targeting global/North American electrical deployment standards.
- NA: No first expansion card slot modification (Slot 1 remains available for optional fieldbuses or safety cards).
- PA: Specific internal firmware/software functionality package tailored for precise positioning or specialized tracking algorithms.
Field Commissioning & Safety Constraints
Safe Torque Off (STO) Management
The S7240F variant features a built-in dual-channel STO function. This safety circuit explicitly disables the power output stage pulses to prevent unexpected motor restarts. To use this feature properly, the 24 V DC safety signals must be continuously maintained across the designated dual channels. If your design omits an external safety relay, the drive will remain in a permanent fault condition unless the STO inputs are properly jumpered out according to the OEM schematics.
Regenerative Energy and DC Bus Setup
When driving high-inertia vertical loads or high-speed indexing axes, the kinetic energy fed back during deceleration will elevate the internal DC bus voltage. The S7240F includes an internal brake chopper circuit; however, ensure your duty cycle calculations account for peak thermal dissipation. If the internal resistor cannot absorb the regenerated energy, an external power resistor must be added across the +RB and -RB terminals to avoid overvoltage faults (F02).
Warning: High-voltage DC link potentials remain stored within the internal capacitor banks for up to 10 minutes after disconnecting the main AC supply lines. Verify the voltage at the DC bus terminals drops below 60 V DC using a digital multimeter before attempting to wire or inspect hardware connections.
Frequently Asked Questions
What communication protocols are natively available on the S7240F-NANAPA?
The S700 platform natively provides onboard CANopen and EtherCAT terminal interfaces without requiring expansion slot cards. If your system architecture relies on Profibus, DeviceNet, or SynqNet, you must install the corresponding Kollmorgen expansion module into Slot 1 or Slot 2.
How do I troubleshoot an F04 feedback fault on startup?
An F04 fault indicates a breakdown in encoder or resolver signal telemetry. Check the feedback cable shielding termination at the front panel clamp. Ensure the sensor type selected in the DriveGUI setup wizard matches the physical feedback device installed on the motor frame (e.g., EnDat, BiSS, or SFD).
Can this drive be mounted horizontally inside a shallow electrical panel?
No. To maintain the designed thermal convection airflow across the integrated heat sink paths, you must mount the S7240F vertically. Maintain at least 100 mm of clear space directly above and below the drive housing to prevent localized air recirculation and subsequent thermal tripping.
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