Eaton CROUSE-HINDS Series Technical Support
Mtl intrinsic safety solutions replacing an system with an system connected to a honeywell llmux card
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- Instruction manual (114 pages) ,
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Technical support note
MTL intrinsic safety solutions
Replacing an MTL830B System with an MTL830C
System connected to a Honeywell LLMUX card
1 Introduction
This document provides instructions for replacing an MTL830B temperature multiplexer system with a MTL830C temperature
multiplexer system. A block diagram showing an example hardware installation before and after installation is shown below for
reference.
RS485
Data Highway 1
MTL3052
Isolator
MTL831B
Transmitter
16 Sensor Inputs
(RTD, TC, or mV)
Figure 1: Example of Hardware Changes Associated with Replacing an MTL830B System with an MTL830C System
1
Honeywell System
RS485
MTL838B-HON
19-30Vdc
Receiver
Data Highway 2
MTL3052
Isolator
MTL831B
Transmitter
16 Sensor Inputs
(RTD, TC, or mV)
Eaton Electric Limited,
Great Marlings, Butterfield, Luton
Beds, LU2 8DL, UK.
Tel: + 44 (0)1582 723633 Fax: + 44 (0)1582 422283
E-mail: mtlenquiry@eaton.com
www.mtl-inst.com
© 2019 Eaton
All Rights Reserved
Publication No. TSN838C Rev 1
July 110719
July 2019
TSN MTL830x Rev 1
RS485
Power
Data Highway
16 Sensor Inputs
(RTD, TC, or mV)
Honeywell System
RS485
MTL838C Receiver
MTL5553
Isolator
MTL831C
MTL831C
Transmitter
Transmitter
16 Sensor Inputs
(RTD, TC, or mV)
19-30Vdc
Power
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Summary of Contents for Eaton CROUSE-HINDS Series
- Page 1 (RTD, TC, or mV) (RTD, TC, or mV) Figure 1: Example of Hardware Changes Associated with Replacing an MTL830B System with an MTL830C System Eaton Electric Limited, Great Marlings, Butterfield, Luton Beds, LU2 8DL, UK. Tel: + 44 (0)1582 723633 Fax: + 44 (0)1582 422283 E-mail: mtlenquiry@eaton.com...
- Page 2 TSN MTL830x Transition July 2019 2 Steps for replacing the MTL830B with the MTL830C system 1. Record the settings if the exsiting MTL830B system. a. Record the channel configuration (thermocouple, mV, 2-wire RTD, 3-wire RTD or 4-wire RTD b. Record the address of each MTL831B. The address is set by the positions of SW 100 switches 1 and 2. NOTE: Only addresses 1 and 2 are used.
- Page 3 TSN MTL830x Transition July 2019 e. Move the Data Highway cable from the MTL831B to the MTL831C. If two Data Highway cables were used with the MTL830B system, select one of the two cables to use with the MTL830C system. The second Data Highway cable is not connected. f.
- Page 4 TSN MTL830x Transition July 2019 11. Use the software to configure the MTL838C to match the old MTL830B system settings you recorded (see the MTL83xC LLMUX Emulation manual (INM MTL83xC LLMUX) for details). On the MTL838C tab: a. Check for relevant firmware updates for the MTL831/MTL838C b.
- Page 5 TSN MTL830x Transition July 2019 12. Use the software to configure the MTL831C(s) to match the old MTL830B system settings you recorded, a. NOTE: The Honeywell system sends most of the channel configuration to the MTL830C system. However, the number of wires used for RTDs is not included in the configuration data sent by the Honeywell system. The default channel configuration for RTDs is 3-wire.
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Page 6: Frequently Asked Questions
No. The Modbus mapping of the MTL838C excatly the same as the MTL838B. EUROPE (EMEA): The given data is only intended as a product Eaton Electric Limited, description and should not be regarded as a legal Great Marlings, Butterfield, Luton +44 (0)1582 723633 warranty of properties or guarantee.