6ES7351-1AH02-0AE0 Siemens SIMATIC S7-300 Positioning Module FM 351 Original Brand New

• Two-channel positioning module for rapid traverse/creep speed drives
• 4 digital outputs per channel for motor control
• Incremental or synchronous-serial position feedback

Note:

We offer position measuring systems and preassembled connecting cables for counting and positioning functions under SIMODRIVE Sensor or Motion Connect 500, see under this link.

The FM 351 two-channel positioning module handles the adjustment of mechanical axes on rapid-traverse and creep-speed drives. The module is used for positioning adjustment axes and setting-up axes, preferably with standard motors, controlled via contactors or frequency converters.

The module is used in:

• Packaging machines
• Lifting gear and conveying equipment
• Woodworking machinery
• Paper and printing machinery
• Rubber- and plastics-processing machines
• Machine tools

A positioning controller with the FM 351 comprises the following essential components:

• FM 351:
  • For the positioning of two independent axes
• S7-300-CPU:
  • For sequence control
  • To start/stop the positioning
• Programming device:
  • For programming the STEP 7 program
  • For parameterization FM 351 with STEP 7 via parameterization screens
  • For testing/commissioning
• Operator panel (optional):
  • For operation and monitoring the machine
  • For error diagnostics

Coupling between FM 351 and the CPU is via technology modules.

Positioning functionality

• Setup:
  Traversing of the rapid traverse/creep speed axis at the “touch of a button”.
• Absolute incremental mode:
  Traversing the axis to an absolute target position. The numerical values are stored in a table on the FM 351.
• Relative incremental mode:
  The axis is moved by a predefined distance.
• Active homing:
  For synchronizing after switching on the controller when using incremental encoders.

Special functions

• Work offset
• Set reference point
• Delete distance-to-go

Mode of operation

Preliminary steps for positioning:

• Mechanical/electronic tuning:
  Conveniently by entering machine data.
• Specify target position and traversing velocity via the S7 CPU or configuration software.
• Transmission of interface signals from the CPU to the FM 351 (start, stop).

The FM 351 handles actual positioning:

• Each channel is assigned 4 digital outputs that control the functions rapid traverse, creep speed, counterclockwise rotation, clockwise rotation.
• Depending on the distance to the target, creep speed or rapid traverse/creep speed is specified.
• After reaching the cut-off point, the module monitors the target approach. After reaching the target range, a message is sent to the CPU.