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8021-CE-LH

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Emerson PAC8000 8021-CE-LH left-hand carrier extender that receives Railbus and power from a matched 8020-CE-RH extension link.
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Technical specifications for 8021-CE-LH

  • Manufacturer:
    Emerson
  • Part Number:
    8021-CE-LH
  • Product Family:
    PAC Systems
  • Product Type:
    Left-Hand Carrier Extender
  • Stock:
    1
  • Manufacturer:
    Emerson
  • Product family:
    PAC8000
  • Exact model:
    8021-CE-LH
  • Product type:
    Left-hand carrier extender
  • Required pair:
    8020-CE-RH
  • Railbus interface:
    37-pin Sub-D
  • Supported addressing:
    32-slot or 64-slot node
  • Maximum extender pairs:
    3 per node
  • Weight:
    0.14 kg
  • Estimated shipping dimensions:
    17.8 × 4.5 × 4.1 cm
  • Tariff Code:
    Please confirm the destination before shipping
  • Country of origin:
    USA
  • 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 Interface Position Link Continuity Address Continuity Product Applications

Features:

  • Left-hand entry: Receives the extension at the start of the downstream carrier group.
  • Directional pairing: Works with 8020-CE-RH at the opposite end of the cable.
  • Node continuation: Carries Railbus communication and power into the next separated group.
Receiving role: The module provides the incoming side of a PAC8000 carrier extension.

Handed identity: LH distinguishes its downstream position from the upstream RH component.

Planning value: Clear carrier order and address records make expansion and fault isolation easier.

Apter Power supports sourcing of the Emerson 8021-CE-LH Left-Hand Carrier Extender with quotations, technical documentation and configuration review.
Emerson 8021-CE-LH Left-Hand Carrier Extender 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.
  • Downstream entry: The LH extender occupies the incoming edge of the added carrier group.
  • Opposite endpoint: Its cable returns to an 8020-CE-RH at the upstream group.
  • Group boundary: The pair defines a physical break without creating a separate PAC8000 node.
  • Maintenance record: Recording the handed positions avoids reversed-module replacement during service.
  • Communication path: Railbus signals continue through the extender cable into the downstream carrier.
  • Power path: Carrier power follows the same planned extension arrangement.
  • Cable dependency: Connector seating and cable condition affect every module after the link.
  • Diagnostic boundary: A downstream loss should be assessed across both extenders and the cable, not at one endpoint alone.
  • Single node: Modules after the extender remain inside the existing controller address space.
  • Address capacity: Both 32-slot and 64-slot schemes are supported by the extender family.
  • Expansion limit: No more than three extender pairs are used in one node.
  • Commissioning check: Downstream addresses should follow the carrier order recorded for the installation.
  • Remote carrier groups: Brings the PAC8000 node into a separated enclosure or rail section.
  • Cabinet re-layout: Supports a downstream carrier group when the original rail cannot accept more modules.
  • Controlled expansion: Maintains one planned communication and power chain across a physical gap.
  • Handed spare replacement: Restores the incoming endpoint in systems documented with 8021-CE-LH.
Description
On the receiving side of a PAC8000 carrier extension, 8021-CE-LH brings Railbus communication and power into the left-hand end of the next carrier group. This allows a node to continue across a planned cabinet separation.

8021-CE-LH is the directional partner to 8020-CE-RH rather than an interchangeable handed variant. Its position at the incoming side of the downstream group keeps the extension path aligned with the carrier layout.

A separated node should be documented from controller through every carrier, cable and extender pair. With the complete layout for 8021-CE-LH, Apter Power can support accurate sourcing and help the customer avoid a reversed link arrangement.
Alternative Names
8021 CE LH 8021-CE-LH 8021CELH 8021 CE-LH Emerson 8021-CE-LH PAC8000 8021-CE-LH 8021 CE/LH 8021-CE LH
Technical notes
Incoming-link note: 8021-CE-LH belongs at the left-hand entry of the downstream carrier group and receives the extension from 8020-CE-RH. Swapping the handed modules can break the intended Railbus and power path. Apter Power can review carrier orientation, cable details and address continuity before quotation.
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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.
Where is 8021-CE-LH installed when a PAC8000 node continues into a second enclosure?
It is placed at the left-hand entry of the downstream carrier group, receiving the extension cable from the upstream 8020-CE-RH.
Why is 8021-CE-LH not a direct substitute for the right-hand carrier extender?
The two modules serve opposite ends of a directional link. Using the correct handed part maintains the intended Railbus and power flow.
What should be checked when the carrier after 8021-CE-LH does not appear in the node?
Review the paired 8020 orientation, extension cable, incoming power continuity and downstream address allocation before attributing the fault to one module.
Can 8021-CE-LH be added after three existing PAC8000 extension pairs?
The official layout limit is three extender pairs per node. A fourth separation calls for a different node or cabinet plan.
How does 8021-CE-LH affect the downstream carrier addresses?
It continues the existing node rather than creating a new address space, so the downstream modules must fit the controller’s remaining 32-slot or 64-slot plan.
Which details should accompany a request for 8021-CE-LH from an installed system?
Include the upstream extender reference, carrier order, extension cable information, controller type and downstream address range for a precise quotation.