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6ES7157-0AC82-0XA0

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Siemens 6ES7157-0AC82-0XA0 is a non-Ex SIMATIC DP/PA coupler that links PROFIBUS DP to a powered PROFIBUS PA segment.
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Technical specifications for 6ES7157-0AC82-0XA0

  • Manufacturer:
    Siemens
  • Part Number:
    6ES7157-0AC82-0XA0
  • Product Family:
    Siemens Simatic DP
  • Product Type:
    SIMATIC DP/PA Coupler for PROFIBUS Networks
  • Stock:
    1
  • Coupling Function:
    PROFIBUS DP to PROFIBUS PA
  • Version:
    Non-Ex
  • PROFIBUS DP Rate:
    45.45 kbaud
  • PROFIBUS PA Rate:
    31.25 kbaud
  • Bus Protocol:
    PROFIBUS DP
  • Rated Supply:
    24 V DC
  • Permissible Supply Range:
    20.4 to 28.8 V DC
  • PA Output Voltage:
    31 V DC ±1 V
  • PA Output Current:
    1 A
  • Maximum Coupler Current:
    1.8 A at 24 V DC
  • Typical Power Loss:
    12 W
  • Power-Failure Bypass:
    Minimum 5 ms
  • Isolation Test:
    500 V DC
  • Maximum PA Devices:
    31 outside the Ex area
  • Bus Termination:
    Switchable PA terminator
  • Status Indication:
    Yellow DP, yellow PA, and green ON LEDs
  • Protection Rating:
    IP20
  • Horizontal Operating Temperature:
    -25 to +60 °C
  • Vertical Operating Temperature:
    -25 to +40 °C
  • Weight:
    1.105 lbs (0.501 kg)
  • Estimated shipping dimensions:
    13.4x15.1x9.1cm
  • Tariff Code:
    8517629900
  • Country of origin:
    Germany
  • 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 DP to PA PA Power Termination Indicators

Features:

  • The coupler converts a 45.45 kbaud PROFIBUS DP physical layer to a 31.25 kbaud PA segment.
  • A 31 V DC, 1 A output powers connected non-Ex PROFIBUS PA field devices.
  • Separate DP, PA, and supply indicators identify the operating state of both network sides.
Siemens 6ES7157-0AC82-0XA0 joins PROFIBUS DP control traffic to one powered PA field segment.

The PA output of 6ES7157-0AC82-0XA0 supplies field devices while the current budget limits their combined demand.

The switchable terminator on 6ES7157-0AC82-0XA0 defines whether the coupler ends or passes through the PA trunk.

Verify the complete Siemens 6ES7157-0AC82-0XA0 SIMATIC DP/PA Coupler article number and interface configuration before matching the installed unit.
Siemens 6ES7157-0AC82-0XA0 SIMATIC DP/PA Coupler 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.

Physical-Layer Conversion

  • DP side: The controller network reaches the coupler at the documented PROFIBUS DP transmission rate.
  • PA side: The field segment operates at the fixed PROFIBUS PA rate.
  • Protocol path: The coupler transfers fieldbus telegrams while changing the electrical transmission method.
  • Non-Ex scope: Connected PA devices remain outside the hazardous-area application covered by Ex couplers.

Segment Voltage and Current Budget

  • Supply input: A 24 V DC feed powers the coupler and its PA supply circuitry.
  • PA output: The field terminals provide 31 V DC within the documented tolerance.
  • Current limit: All connected field devices together remain within the 1 A PA output.
  • Device count: The segment supports no more than 31 devices and may support fewer when current demand is higher.

PA Trunk Connection Rules

  • P+ and P−: The two field conductors connect with the documented polarity.
  • Cable shield: The braided shield is clamped at the provided cable grip.
  • Terminator ON: Enable termination when the coupler is at the physical end of the PA segment.
  • Terminator OFF: Disable it only when the PA trunk continues to another correctly terminated endpoint.

Supply and Bus-Side Diagnosis

  • ON indicator: The green LED confirms the 24 V DC supply is present.
  • DP indicator: The yellow DP LED reports monitoring of the controller-side network.
  • PA indicator: The yellow PA LED reports monitoring of the field-side segment.
  • Fault isolation: Supply, DP wiring, PA wiring, termination, and field-device current are checked as separate paths.
Description
Siemens 6ES7157-0AC82-0XA0 is a SIMATIC DP/PA coupler that connects a 45.45 kbaud PROFIBUS DP segment to a 31.25 kbaud PROFIBUS PA fieldbus. It converts the physical transmission method while passing protocol traffic between the two networks.

The 24 V DC input of 6ES7157-0AC82-0XA0 powers both the coupler electronics and the PA segment. Its 31 V DC PA output can supply up to 1 A, so the current demand of all connected field devices and the trunk wiring determines how many devices can operate on the segment.

PROFIBUS PA connects to 6ES7157-0AC82-0XA0 through P+ and P− screw terminals with the cable shield clamped at the module. The switchable PA terminator is enabled when the coupler ends the segment and disabled only when the bus continues to a separate termination point.

Yellow DP and PA indicators on 6ES7157-0AC82-0XA0 monitor the two bus sides, while the green ON indicator reports the 24 V supply. The non-Ex coupler supports up to 31 PA field devices outside the hazardous area within its output-current limit.
Alternative Names
6ES71570AC820XA0 6ES7157 0AC82 0XA0 6ES7 157 0AC82 0XA0 Siemens 6ES7157-0AC82-0XA0 6ES7157-0AC82-0XA0 DP/PA Coupler 6ES7157-0AC82-0XA0 PROFIBUS Coupler 6ES7157-OAC82-OXAO 6E57157-0AC82-0XA0
Technical notes
The PA current budget and terminator switch on Siemens 6ES7157-0AC82-0XA0 must match the physical segment and every connected field device.
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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 does 6ES7157-0AC82-0XA0 show DP activity but no PA communication?
Check the 6ES7157-0AC82-0XA0 PA polarity, cable shield, terminator position, field-device addresses, segment current, and PA LED state.
How many field devices can 6ES7157-0AC82-0XA0 power?
The 6ES7157-0AC82-0XA0 supports up to 31 non-Ex PA devices, but their combined current and cable loss must remain inside the 1 A output budget.
When should the terminator switch on 6ES7157-0AC82-0XA0 be ON?
Set the 6ES7157-0AC82-0XA0 terminator ON only when the coupler is at the physical end of the PROFIBUS PA segment.
Why does the 24 V supply of 6ES7157-0AC82-0XA0 drop during startup?
Measure the 6ES7157-0AC82-0XA0 source capacity, polarity, wiring resistance, field-device current, short circuits, and startup load on the PA segment.
Can 6ES7157-0AC82-0XA0 power intrinsically safe PA devices in a hazardous area?
No. 6ES7157-0AC82-0XA0 is the non-Ex coupler; hazardous-area fieldbus installation requires the separately specified Ex hardware and design.
What must be documented before replacing 6ES7157-0AC82-0XA0?
Record the 6ES7157-0AC82-0XA0 DP wiring, PA polarity, shield, terminator position, 24 V supply, field-device list, and segment current calculation.