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6FC5403-0AA20-1AA1

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The Siemens 6FC5403-0AA20-1AA1 is a SINUMERIK HT 8 handheld terminal used to display CNC operating screens, enter commands and control manual axis movement through an electronic handwheel.
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Technical specifications for 6FC5403-0AA20-1AA1

  • Manufacturer:
    Siemens
  • Part Number:
    6FC5403-0AA20-1AA1
  • Product Family:
    Siemens Sinumerik
  • Product Type:
    SINUMERIK HT 8 Handheld Terminal with Handwheel
  • Stock:
    1
  • Display:
    7.5-inch TFT touch screen
  • Resolution:
    640 x 480 pixels
  • Display Colors:
    262,144
  • Membrane Keys:
    52
  • Machine Keys:
    24
  • Control Keys:
    28
  • Emergency Stop:
    Two-channel
  • Enabling Switches:
    Two, three-stage
  • Override Switch:
    19 positions
  • Handwheel:
    Integrated electronic handwheel
  • Supply Voltage:
    24 V DC
  • Maximum Power Consumption:
    Approximately 13 W
  • Ethernet:
    Integrated controller interface
  • Service Interface:
    USB
  • Front Protection:
    IP65
  • Safety Class:
    III
  • Processor:
    Integrated CPU with program and user memory
  • Weight:
    4.1888 lbs (1.9 kg)
  • Estimated shipping dimensions:
    29x29x12.6cm
  • Tariff Code:
    85371098
  • Country of origin:
    Austria
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Safety Controls Motion Input Display and Keys Cable Interface

Features:

  • A 7.5-inch touch display and 52 membrane keys place CNC visualization and command entry in one handheld unit.
  • The integrated handwheel and 19-position override switch support controlled manual axis movement.
  • Two-channel emergency-stop and enabling circuits remain separate from normal operator-key data.
The HT 8 combines screen-based SINUMERIK operation with physical controls that can be reached while the terminal is held.

Machine-command data and safety-circuit states follow different electrical paths through the rear terminal connection.

The 24 V DC supply, connection cable and strain relief must be treated as parts of the complete handheld installation.

The Siemens 6FC5403-0AA20-1AA1 SINUMERIK HT 8 Handheld Terminal may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6FC5403-0AA20-1AA1 SINUMERIK HT 8 Handheld Terminal 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.

Separating safety actions from operator commands

  • Emergency stop: The two-channel device is wired through dedicated safety contacts rather than the ordinary key interface.
  • Enabling action: Two three-stage switches let the safety circuit distinguish released, enabled and fully pressed positions.
  • Signal boundary: Touch and membrane-key actions remain standard operating commands and do not replace the safety channels.
  • Circuit review: Both channels and the machine-side evaluation must be checked together before the terminal is enabled.

Using the local handwheel and override selector

  • Handwheel path: Rotary movement is converted into incremental commands for the selected CNC axis.
  • Override positions: The 19-position selector supplies the documented traverse or feed override selection.
  • Axis selection: The active machine function determines which axis or motion receives handwheel pulses.
  • Command separation: The rotary controls do not share the same purpose as the membrane machine keys.

Combining screen feedback with physical input

  • Touch layer: The 640 x 480 display presents SINUMERIK screens and accepts configured touch selections.
  • Machine keys: Twenty-four keys are assigned to machine-side commands.
  • Control keys: Twenty-eight further keys serve navigation and operating entries.
  • Visual response: The display returns process and menu feedback for actions entered through either interface.

Connecting power, control data and service access

  • Supply path: The terminal receives its 24 V DC operating power through the documented rear connection.
  • Control link: The machine interface carries operator data between the HT 8 and SINUMERIK system.
  • USB service: A separate USB connection is provided for supported service functions.
  • Mechanical support: Correct connector seating and strain relief prevent cable movement from loading the terminal contacts.
Description
Siemens 6FC5403-0AA20-1AA1 is the handwheel-equipped SINUMERIK HT 8 handheld terminal used to display CNC operating screens and return local operator commands to the machine control. Its touch display, membrane keyboard and machine keys place visualization and manual operation in the same portable unit.

The safety-control paths of 6FC5403-0AA20-1AA1 are distinct from its normal key data. A two-channel emergency-stop device and two three-stage enabling switches connect through dedicated conductors so their states can be evaluated by the machine safety circuit independently of touch or keyboard input.

Manual axis work on 6FC5403-0AA20-1AA1 combines the integrated electronic handwheel with a 19-position override rotary switch. The handwheel supplies incremental motion commands, while the override position defines the commanded traverse level without turning either control into a general-purpose input key.

At the rear connection area, 6FC5403-0AA20-1AA1 receives 24 V DC and carries control communication through its terminal cable, while the USB interface provides a separate service path. The IP65 housing protects the operator-facing unit, but the cable assignment and strain relief remain part of the complete handheld installation.
Alternative Names
6FC54030AA201AA1 6FC5 403-0AA20-1AA1 6FC5403 0AA20 1AA1 Siemens 6FC54030AA201AA1 SINUMERIK HT 8 Handwheel Terminal HT8 Mobile CNC Operator Panel SINUMERIK Handheld Touch Panel HT 8 Emergency-Stop Handheld Unit
Technical notes
Siemens 6FC5403-0AA20-1AA1 uses two-channel emergency-stop and enabling circuits that must remain separate from ordinary operator inputs. Match the rear connection cable, interface assignment and 24 V DC supply before commissioning.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Why must the emergency-stop wiring of 6FC5403-0AA20-1AA1 be checked separately from its keys?
The 6FC5403-0AA20-1AA1 carries emergency-stop contacts on a dedicated two-channel path, so normal touch and key operation cannot prove that safety circuit.
What distinguishes the two enabling switches on 6FC5403-0AA20-1AA1 from ordinary pushbuttons?
Each enabling switch on 6FC5403-0AA20-1AA1 has three stages, allowing the machine safety evaluation to recognize released, enabled and fully pressed states.
How are manual axis commands entered from 6FC5403-0AA20-1AA1?
With 6FC5403-0AA20-1AA1, the selected axis receives incremental commands from the electronic handwheel while the 19-position selector supplies the override setting.
Which rear connections should be compared before installing 6FC5403-0AA20-1AA1?
Before connecting 6FC5403-0AA20-1AA1, compare the terminal cable, 24 V DC conductors, safety-channel pins, communication assignment and strain-relief arrangement.
Can a working display confirm every function of 6FC5403-0AA20-1AA1?
No. A lit display on 6FC5403-0AA20-1AA1 confirms only part of the unit; test touch, keys, handwheel, override and both safety circuits separately.
What should be verified if 6FC5403-0AA20-1AA1 communicates but does not power correctly under load?
Check the 24 V DC supply at 6FC5403-0AA20-1AA1, connector seating, cable voltage drop and the approximately 13 W maximum terminal demand.

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