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Key Technical Specifications
| Parameter | Specification |
| Part Number | 1FK7100-5AZ91-1ZZ9-ZS05 |
| Motor Type | Permanent Magnet Synchronous Servo Motor |
| Frame Size | 100 (Flange dimensions: 192 mm) |
| Cooling Method | Natural cooling (non-ventilated) |
| Rated Speed | 2,000 / 3,000 RPM (variant configuration dependent) |
| Stall Torque | Approx. 18.0 to 28.0 Nm (depending on winding option) |
| Degree of Protection | IP64 / IP65 (standard shaft sealing) |
| Power/Signal Connector | Rotatable angle connectors for power and feedback |
| Special Option Code (Z-Option) | S05 (Special shaft/keyway or custom holding brake configuration) |
Product Introduction & Supply Chain Strategy
The Siemens 1FK7100-5AZ91-1ZZ9-ZS05 is a compact synchronous AC servo motor engineered for motion control applications in CNC machine tools, robotics, packaging systems, and material handling lines. It pairs with SINAMICS S120 and SIMODRIVE 611 drive systems to deliver precise speed regulation, rapid acceleration, and high dynamic response.
Procuring this motor as New Surplus allows maintenance teams to secure exact replacement hardware immediately, avoiding multi-week OEM manufacturing delays. Selecting genuine New Surplus over refurbished motors prevents premature bearing failure, insulation breakdown, and encoder alignment errors, protecting critical automation cells from unplanned downtime while reducing Total Cost of Ownership (TCO).
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
- Disconnect primary AC power to the servo drive amplifier and perform Lock-Out/Tag-Out (LOTO) on the main breaker cabinet.
- Allow drive bus capacitors to fully discharge (wait at least 5 minutes) and verify zero DC bus voltage with a multimeter.
- Record the motor drive parameter configuration and order code details from the motor nameplate.
Stage 2: Removal
- Unplug the power connector plug and encoder signal feedback cable from the motor terminal housing.
- Support the motor housing using a crane sling or mechanical lift to prevent sudden drop load on the machine frame.
- Unbolt the flange mounting screws and pull the motor straight out from the gearbox or coupling housing.
Stage 3: Installation (Clone & Seat)
- Verify that the shaft dimensions, keyway configuration, and Z-option (S05) on the new 1FK7 motor match the removed unit exactly.
- Align the motor shaft with the mechanical coupling, ensuring zero angular or parallel misalignment.
- Secure the motor flange bolts evenly in a diagonal pattern and re-engage the rotatable power and signal cable connectors.
Stage 4: Power-On & Testing
- Power up the SINAMICS or SIMODRIVE controller and confirm no encoder interface or drive alignment faults occur during initialization.
- Run a low-speed jog command to verify rotation direction, encoder feedback counts, and mechanical smoothness before returning the machine to automatic mode.
1FK7100-5AZ91-1ZZ9-ZS05
1FK7100-5AZ91-1ZZ9-ZS05
Firmware/Software Versions & Upgrade Notes
- Drive Configuration: Ensure the motor code (or DRIVE-CLiQ topology data if equipped) is correctly recognized by the SINAMICS S120 / SIMOTION configuration software (STARTER or TIA Portal).
- Encoder Alignment: The internal optical/absolute encoder is factory-aligned to the rotor magnet position. Do not loosen or remove the rear encoder cover plate, as losing commutation alignment requires specialized factory recalibration.
- Mechanical Notice: When installing couplings onto the shaft, do not use hammers or impact tools. Axially hammering the shaft will damage the internal precision ball bearings and optical encoder disk.
Frequently Asked Questions (FAQ)
Q: Is this Siemens 1FK7100-5AZ91-1ZZ9-ZS05 motor brand new?
A: Yes. This motor is 100% New Surplus / Original New stock. It has never been mounted on a machine tool, operated in a factory line, or rebuilt. It retains its original shaft protective sleeve and factory finish.
Q: Why choose New Surplus over a refurbished servo motor?
A: Refurbished servo motors frequently undergo rotor re-magnetization or rewind operations that alter motor constant parameters (K_t), leading to drive tuning instability. Refurbished encoders also carry higher thermal failure rates. New Surplus provides factory-original windings, pristine bearings, and 100% rated torque performance.
Q: How is this motor verified prior to dispatch?
A: Every 1FK7 motor undergoes physical shaft inspection, winding resistance balance testing, insulation resistance (megger) verification, and encoder signal check prior to ESD-safe and shock-resistant packaging.
Q: Can I replace this motor while the drive amplifier remains powered up?
A: No. Unplugging servo motor power or feedback cables under load will cause severe arcing across connector pins and generate high inductive voltage spikes that can destroy the drive inverter stage.
Q: What warranty is supplied with this New Surplus item?
A: We provide a comprehensive 1-year replacement warranty on all New Surplus inventory. If any functional defect occurs under standard industrial operating conditions, we supply an immediate direct replacement or process a full credit.
