8851-LC-MT
8851-LC-MT
8851-LC-MT
8851-LC-MT
8851-LC-MT
8851-LC-MT
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8851-LC-MT

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GE 8851-LC-MT is a PAC8000 SafetyNet Controller that runs safety application programs with SIL 2-certified 1oo1D diagnostics.
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Technical specifications for 8851-LC-MT

  • Manufacturer:
    General Electric
  • Part Number:
    8851-LC-MT
  • Product Family:
    General Electric
  • Product Type:
    SafetyNet Controller
  • Stock:
    1
  • Safety Certification:
    IEC 61508 SIL 2
  • Safety Architecture:
    1oo1D with comprehensive internal diagnostics
  • LAN Medium:
    100BaseTX or 10BaseT Ethernet
  • LAN Protocol:
    SafetyNet P2P
  • LAN Rate:
    10 to 100 Mbit/s
  • LAN Connectors:
    Two RJ45 8-pin ports
  • LAN Isolation:
    1500 V dielectric withstand
  • Serial Interfaces:
    COM 1 and COM 2, RS485 half-duplex
  • Serial Rate:
    1.2 to 115.2 kbit/s asynchronous
  • Local I/O Capacity:
    Up to 64 I/O modules
  • Controller Power:
    12 VDC from 8913-PS-AC
  • Controller Current:
    0.4 A typical; 0.5 A maximum
  • System Supply Current:
    15 mA maximum
  • Protection Technique:
    EEx nL IIC T4
  • Hazardous Location:
    Class I, Division 2, Groups A, B, C, D, T4
  • Event Capacity:
    Up to 8000 events
  • HART Access:
    Pass-through of process and status variables
  • Software Fault Action:
    Halt CPU or reset CPU
  • Weight:
    1.35 kg
  • Estimated shipping dimensions:
    69 x 232 x 138 mm
  • Tariff Code:
    8537101190
  • 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 Specifications Safety Communications Redundancy

Features:

  • Event storage for up to 8000 controller events
  • 8750-CA-NS or 8751-CA-NS carrier mounting options
  • EEx nL IIC T4 and Class I, Division 2 hazardous-location approvals
GE 8851-LC-MT receives 12 VDC from the 8913-PS-AC supply and draws 0.4 A typically or 0.5 A maximum, with a maximum 15 mA demand from the system supply.

The 8751-CA-NS carrier adds earth-leakage detection, while the 8750-CA-NS provides the standard mounting arrangement for the controller.

The event store retains as many as 8000 records, and the front-panel indicators expose controller state and diagnostic conditions for maintenance review.

Apter Power supports sourcing and official documentation requests for the GE 8851-LC-MT SafetyNet Controller used in PAC8000 safety-system maintenance.
GE 8851-LC-MT SafetyNet Controller Manuals, Datasheets, Links
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.
GE 8851-LC-MT SafetyNet Controller Specs

General

  • ManufacturerGeneral Electric
  • Model8851-LC-MT
  • ConditionNew Original ready stock
  • Product FamilyPAC8000 SafetyNet
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.

Certified safety behavior

  • SIL Certification: The controller is certified for IEC 61508 SIL 2 safety applications.
  • Architecture: A 1oo1D arrangement combines single-channel control with comprehensive diagnostic coverage.
  • Fault Response: Detected critical faults initiate a controlled shutdown instead of uncontrolled operation.
  • Safe State: Output channels are directed to their configured safe values during a shutdown sequence.

Controller data paths

  • Ethernet: Two RJ45 ports support 10BaseT or 100BaseTX SafetyNet peer-to-peer communications.
  • Serial Ports: COM 1 and COM 2 provide RS485 half-duplex communication from 1.2 to 115.2 kbit/s.
  • Railbus: The internal Railbus carries data between the controller and local PAC8000 I/O modules.
  • HART Pass-through: Process and status variables can pass to maintenance applications without becoming part of the safety application.

Master-standby operation

  • Pairing: A second controller can be installed to form a master and standby pair.
  • Synchronization: The master transfers application and I/O state information to the standby controller.
  • Transfer: A qualified standby controller can assume control without disturbing the controlled process.
  • Firmware Match: Both controllers require identical firmware and control strategy before redundancy is accepted.
Description
The GE 8851-LC-MT stores and executes the SafetyNet application program downloaded from the Workbench. It coordinates local I/O over the internal Railbus, exchanges data with approved Ethernet hosts, and communicates with remote serial devices through the controller communication paths.

8851-LC-MT is certified for IEC 61508 SIL 2 applications using a 1oo1D architecture with comprehensive internal diagnostics. A detected critical fault initiates a controlled shutdown so outputs are driven to their configured safe states.

When a second 8851-LC-MT is installed, the controllers operate as a master-standby pair. The master transfers the application state and I/O data to the standby controller so a transfer can occur without disturbing the controlled process.

A local 8851-LC-MT node can manage up to 64 I/O modules and provides two Ethernet ports, two RS485 serial ports, and HART variable pass-through. HART pass-through is available for maintenance access but is not part of the safety application.
Alternative Names
GE 8851-LC-MT GE Fanuc 8851-LC-MT MTL 8851-LC-MT 8851 LC MT 8851LCMT PAC8000 8851-LC-MT SafetyNet 8851-LC-MT 8851-LC-MT SafetyNet Controller
Technical notes
GE 8851-LC-MT supports selectable Halt CPU or Reset CPU responses for diagnosed software malfunctions. The selected response must align with the approved SafetyNet strategy and required application behavior.
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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 will a second GE 8851-LC-MT not enter standby service?
Both GE 8851-LC-MT controllers require identical firmware and the same control strategy before the second controller can qualify for standby operation.
Which carrier should be selected for GE 8851-LC-MT?
GE 8851-LC-MT mounts on an 8750-CA-NS or 8751-CA-NS carrier; choose 8751-CA-NS when earth-leakage detection is required.
How many local I/O modules can GE 8851-LC-MT manage?
A local SafetyNet node controlled by GE 8851-LC-MT can contain up to 64 PAC8000 I/O modules.
What should be checked when an Ethernet link on GE 8851-LC-MT does not come online?
Confirm that GE 8851-LC-MT is connected through one of its RJ45 10BaseT or 100BaseTX SafetyNet peer-to-peer ports and that the network rate matches.
Which serial settings matter when an RS485 device cannot communicate with GE 8851-LC-MT?
GE 8851-LC-MT uses COM 1 and COM 2 as RS485 half-duplex ports with an asynchronous rate from 1.2 to 115.2 kbit/s.
Can HART pass-through data on GE 8851-LC-MT be used directly by the safety application?
No. GE 8851-LC-MT passes HART process and status variables to maintenance applications, but that pass-through is not part of the safety application.
What happens when GE 8851-LC-MT detects a critical internal fault?
GE 8851-LC-MT initiates a controlled shutdown so affected outputs move to their configured safe states.

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