Features:
- Two High Standard control channels close the drive loops for two axes.
- Motor encoders and direct position measuring systems use separate feedback connectors.
- Drive software is transferred from the connected SINUMERIK control through the drive bus.
The 6SN1118-0DM33-0AA2 compares motor feedback with direct machine-position feedback so each axis can be controlled from two measurement points.
X341 and X351 carry the drive-bus connection used for initialization and communication with the numerical control.
Brake, reference-sensor, analog test-output, and start-inhibit signals remain on dedicated connectors for each controlled axis.
The Siemens 6SN1118-0DM33-0AA2 SIMODRIVE 611 High Standard Two-Axis Digital Control Loop Block may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6SN1118-0DM33-0AA2 SIMODRIVE 611 High Standard Two-Axis Digital Control Loop Block Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Two measurement paths per drive axis
- Axis 1 motor: X411 receives the first sin/cos motor-encoder signal.
- Axis 2 motor: X412 receives the second sin/cos motor-encoder signal.
- Direct position: X421 and X422 accept the two direct measuring systems.
- Loop comparison: The controller uses both feedback paths to relate motor rotation to measured machine position.
Dedicated connections around each axis
- Holding brakes: X431 and X432 keep brake control separate for the two axes.
- Reference sensors: X461 and X462 accept the BERO signals used for axis referencing.
- Test outputs: X34 and X35 provide DAC connections for measured drive signals.
- Pulse inhibition: AS1, AS2, and terminal 663 form the documented start-inhibit path.
Software loaded through the drive bus
- Initialization: The SINUMERIK 840D transfers the drive software during startup.
- NC requirement: The installed NC software must meet the documented minimum release.
- Drive requirement: The drive software level must also meet its separate minimum release.
- Order matching: The complete 6SN1118-0DM33-0AA2 suffix identifies the High Standard two-axis hardware covered by these requirements.
Limits that affect encoder installation
- Cable reach: Encoder wiring must remain within the documented 50 m maximum.
- Signal bandwidth: The connected encoder must not exceed the control input frequency limit.
- Channel separation: Axis 1 and axis 2 retain individual motor and direct-feedback connectors.
- Bus continuity: X341 and X351 must remain in the SIMODRIVE communication chain used to load and operate the control.