6SN1123-1AA00-0AA0 SIMODRIVE 611

SKU: 6SN1123-1AA00-0AA0 Category: Drive

Description
Additional information

The Siemens SIMODRIVE 611 6SN1123-1AA00-0AA0 is a power module belonging to the SIMODRIVE 611 modular drive system, designed for controlling AC servo and spindle motors in demanding CNC and motion control applications. This unit is part of Siemens' well-established SIMODRIVE 611 series, which provides a scalable, modular architecture for multi-axis machine tool drives. The 6SN1123-1AA00-0AA0 variant is a single-axis power module rated for use within the SIMODRIVE 611 universal or standard drive configuration.

The 6SN1123-1AA00-0AA0 power module interfaces with the SIMODRIVE 611 control modules via the internal drive bus, enabling coordinated multi-axis operation within a common DC link architecture. It supports connection to 1FK and 1FT series synchronous servo motors as well as 1PH series induction spindle motors. The module incorporates integrated short-circuit and overcurrent protection, DC link overvoltage monitoring, and thermal protection via PTC sensor evaluation. The unit is designed for installation in a SIMODRIVE 611 drive line-up within a control cabinet, sharing a common infeed/regenerative feedback module.

The SIMODRIVE 611 power modules are widely deployed in CNC machine tools including milling machines, turning centers, grinding machines, and machining centers across the automotive, aerospace, and precision engineering industries. The modular design allows system integrators to configure multi-axis drives with a shared DC bus, reducing cabinet space and energy consumption through regenerative feedback. The 6SN1123-1AA00-0AA0 is particularly suited to applications requiring precise torque and speed control of servo axes in high-dynamic positioning tasks.

Technical Specifications

Series	SIMODRIVE 611
Module Type	Power Module, Single-Axis
DC Link Voltage	600 V DC
Input Voltage (AC Supply via Infeed)	3 AC 400 V / 480 V
Output Current (Continuous)	9 A
Output Current (Peak)	18 A
Motor Compatibility	1FK, 1FT synchronous servo motors; 1PH induction spindle motors
Feedback Interface	Resolver, Incremental Encoder (via control module)
Protection Features	Overcurrent, short-circuit, DC link overvoltage, thermal (PTC)
Cooling Method	Forced air cooling (internal fan)
Operating Temperature	0 °C to +45 °C
Storage Temperature	-40 °C to +70 °C
Relative Humidity	5 % to 95 %, non-condensing
Mounting	Cabinet mounting, SIMODRIVE 611 drive line-up
Certifications	CE, UL

Common Fault Codes

F01: DC link overvoltage detected. The DC bus voltage has exceeded the permissible limit.
Check the infeed/regenerative module and braking resistor. Verify supply voltage levels and check for regenerative energy not being dissipated correctly.
F02: DC link undervoltage. The DC bus voltage has dropped below the minimum threshold.
Check the infeed module and AC supply voltage. Inspect fuses and contactor in the infeed circuit.
F03: Overcurrent in power module output stage. Excessive current detected on the motor phase outputs.
Check motor wiring for short circuits or ground faults. Verify motor parameters and current limits in the control module configuration.
F04: Power module overtemperature. The heatsink or internal temperature has exceeded the permissible limit.
Check cabinet ventilation and cooling fan operation. Clean air filters and ensure ambient temperature is within specification.
F05: Motor overtemperature. PTC or KTY sensor on the motor has signalled an overtemperature condition.
Allow motor to cool. Check motor load cycle and verify PTC/KTY wiring between motor and drive. Reduce duty cycle if necessary.
F06: Ground fault detected on motor output. Insulation fault between motor phase and protective earth.
Disconnect motor cable and measure insulation resistance of motor windings and cable. Replace motor or cable if insulation is degraded.
F07: Power module hardware fault. Internal fault detected within the power module IGBT stage.
Power cycle the drive system. If fault persists, the power module requires inspection and likely replacement of the IGBT power stage or the complete module.
F08: Communication fault on drive bus. Loss of communication between power module and control module.
Check the drive bus ribbon cable connections between the control module and power module. Reseat connectors and inspect for damage.

Frequently Asked Questions

What is the continuous output current rating of the 6SN1123-1AA00-0AA0?

The 6SN1123-1AA00-0AA0 power module provides a continuous output current of 9 A, with a peak current of 18 A for dynamic acceleration and deceleration phases.

Does this power module operate as a standalone drive?

No, the 6SN1123-1AA00-0AA0 is a power module that requires a separate SIMODRIVE 611 control module (such as a 6SN1118 series) and an infeed module to form a complete drive system. It cannot operate independently.

Which motors are compatible with the 6SN1123-1AA00-0AA0?

This module is compatible with Siemens 1FK and 1FT series synchronous servo motors as well as 1PH series induction spindle motors, depending on the paired control module type.

What DC link voltage does the SIMODRIVE 611 system operate at?

The SIMODRIVE 611 system operates with a nominal DC link voltage of 600 V DC, supplied by the common infeed module connected to a 3-phase AC supply of 400 V or 480 V.

Can the 6SN1123-1AA00-0AA0 be used in a multi-axis configuration?

Yes, multiple SIMODRIVE 611 power modules can be connected in a drive line-up sharing a common DC bus supplied by a single infeed/regenerative feedback module, enabling coordinated multi-axis operation.

Troubleshooting

Drive does not enable and displays a persistent fault after power-on

Check the fault code displayed on the control module or via the SINUMERIK/SIMATIC controller. Verify DC link voltage is present and within range. Inspect the drive bus cable between control and power modules.

Clear the fault via the controller after addressing the root cause. Reseat the drive bus ribbon cable. If the DC link is not established, check the infeed module and its enable signals.

Motor runs but produces excessive heat or trips on overtemperature fault

Measure the motor current and compare against the rated continuous current. Check the motor's PTC/KTY sensor wiring and resistance. Verify the load cycle and ambient temperature around the drive cabinet.

Reduce the motor load or duty cycle. Ensure cabinet cooling fans are operational and air filters are clean. If PTC wiring is faulty, repair or replace the sensor cable between motor and drive.

Intermittent overcurrent faults during acceleration

Check the acceleration ramp times configured in the control module. Measure motor phase currents with a clamp meter during acceleration. Inspect motor cable for partial insulation damage or high capacitance.

Increase the acceleration ramp time to reduce peak current demand. Verify that the current limits are set correctly in the drive parameters. Replace motor cable if insulation is compromised.

No DC link voltage present after infeed module is powered

Check the infeed module status and its fault indicators. Verify the AC supply voltage at the infeed module input terminals. Inspect DC bus bar connections and fuses within the drive line-up.

Replace blown DC bus fuses. Ensure the infeed module enable signal is active. If the infeed module itself is faulty, it must be repaired or replaced before the power modules can operate.

Drive bus communication error between control module and power module

Inspect the flat ribbon cable connecting the control module to the power module on the drive bus. Check for bent pins or damaged connectors on both modules.

Reseat or replace the drive bus ribbon cable. Ensure the control module is correctly seated and mechanically secured. If the fault persists after cable replacement, the control module or power module interface may be damaged and require repair.

Condition	Repair, Used, Refurbished, New in box (sealed)