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MTL838C Fieldbus Networks Multiplexer Receiver product description:

The MTL838C Receiver may be connected to one or two MTL831C Analog Transmitters. It holds the configuration for the transmitters and receives measurement data from up to 32 sensors (16 from each transmitter). 

The data is then made available via Modbus or for the LLMUX. The MTL838C must be installed in a safe area. However, by using the MTL5553 Isolator/Power Supply, the MTL831C’s may be installed in Zone 0, 1, or 2. The MTL831C can monitor up to 16 inputs from THC or millivolt sources or 2, 3 or 4-wire RTDs.

MTL838C Receiver Figure 1.1 - MTL838C Receiver 2 INM MTL838C Rev 4 The MTL838C, MTL5553, and MTL831C are connected by a data highway consisting of a single shielded, twisted-pair cable.

The data highway carries both signal and power over distances up to 2km, depending on the application, the cable, and the (noise) environment - see Section 4.4. The data

highway cables can be simple twisted-wire pairs or pairs of wire within an IS multicore cable.

Installation of the MTL838C multiplexer transmitter is divided into three main topics.

The MTL838C must be installed in a safe area.

To install, tilt the MTL838C to the left and hook to the left side of the standard 35mm DIN46277 T-section rail. Push to the right and allow the unit to rotate down to sit flat on the DIN Rail. Allow it to spring back to the left and the right side will hook to the DIN Rail.

To remove, push the MTL838C to the right and tilt the right side away from the DIN Rail. While tilted, allow it to spring back to the left and remove from the DIN.

A nominal 24VDC power supply should be wired to the 2 pin pluggable connector labeled “PWR”. An SELV rated power supply is recommended. The cable from thesupply to the MTL838C should be less than 30m in length. The 24VDC power supply negative lead should be grounded to a clean instrument ground.

The Data Highway connects the MTL838C to the MTL831C (and MTL5553 if installed). It supplies power to as well as communication with the MTL831C’s. Ashielded, twisted-pair 

cable should be used for this set of 3 terminals. Connect the two wires to the “+” and “-“ terminals in a way that will ensure that polarity ismaintained when connected to the MTL831C. The shield is connected to the “S”terminal which is also internally wired to the “GROUND” terminals.

This connection is used to temporarily connect the MTL838C to a PC to configure the system, verify its operation, and diagnose issues. Thisconnection is not intended to be permanent. 

When the unit is connected to a PC and the MTL83x Configuration software is communicating with the

MTL838C, the RS-485 ports are disabled. This is to prevent an attempt to configure the device from two sources at the same time.

The MTL838C has two RS-485 ports that may be configured with the Modbus Protocol – see the software manuals for more information.

For some applications (long cables, high ambient noise) the user may elect to use shielded cable for the RS-485 ports. We recommend grounding the shield at one end of the cable only. 

Also, do not connect the shield to the “C” common terminal.

If multiple MTL838C’s are connected to the same host, the cables must be daisy chained from one MTL838C to the next. Because the two RS-485 ports on the MTL838C operate independently 

of one another, daisy chaining is done by putting two wires into each RS-485 terminal on the MTL838C (terminal numbers 6, 7, and 8 for Link 1 or 9, 10, and 11 for Link 2). 

The terminals are rated to support 2 wires from 26AWG (0.14mm2) to 18AWG (0.75mm2). If ferrules are used, the maximum wire gauge is limited to 2 wires at 20AWG (0.5mm2). 

The recommended ferrule crimp length is 8mm.

The two MTL838C GROUND terminals must be grounded to a clean instrument ground. This is to protect the unit from electromagnetic interference. The “S”shield terminal on the Data Highway

 port is internally connected to this point. Proper connection of shields on the cables connecting the MTL838C, MTL831C,and sensors is critical to error-free operation of the system. 

See INM MTL831C for detailed information.

There are two sets of dry alarm contacts (A and B) that are available on the MTL838C. These contacts can be programmed to activate on various conditions of the unit, system, or sensors. 

There is no hardware configuration required for the MTL838C. All configurationis done using the PC software with a USB cable (not supplied) connected to the MTL838C.

MTL838C Fieldbus Networks Multiplexer Receiver product.

MTL7706+

MTL7707+

MTL7707P+

MTL7710-

MTL7710+

MTL7710P+

MTL7715+

MTL7715P+

MTL7722-

MTL7722+

MTL7728-

MTL7728+

MTL7728AC

MTL7728P+

MTL7729P+

MTL7741

MTL7742

MTL7743

MTL7744

MTL7745

MTL7751AC

MTL7755AC

MTL7756AC

MTL7758-

MTL7758+

MTL7760AC

MTL7761AC

MTL7761PAC

MTL7764-

MTL7764+

MTL7764AC

MTL7765AC

MTL7766AC

MTL7766PAC

MTL7767+

MTL7768+

MTL7772AC

MTL7778AC

MTL7779+

MTL7787-

MTL7787+

MTL7787P+

MTL7788+

MTL7788R+

MTL7789+

MTL7796-

MTL7796+

MTL7798

MTL7799

MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL7760AC MTL7760AC MTL7755AC MTL7756AC MTL7764AC MTL7761AC MTL7766PAC MTL7728+ MTL7728P+ MTL7729P+ MTL7787+ MTL7787P+ MTL7728+ MTL7728P+ MTL7729P+ MTL7764+ MTL7767+ MTL7765AC MTL7778AC MTL7728- MTL7799 MTL7706 MTL7707+ MTL7707P+ MTL7741 MTL7742 MTL7743 MTL7744 MTL7745 MTL7787+ MTL7787P+ MTL7788+ MTL7788R+ MTL7789+ MTL7706+ MTL7707+ MTL7707P+ MTL7741 MTL77742 MTL7743 MTL7744 MTL7745 MTL7798

MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL5011B , upgraded model: MTL5511

MTL5018 , upgraded model: MTL5516C

MTL5041 , upgraded model: MTL5541

MTL5042 , upgraded model: MTL5541

MTL5043 , upgraded model: MTL5544

MTL5044 , upgraded model: MTL5544

MTL5045 , upgraded model: MTL5546

MTL5046 , upgraded model: MTL5546

MTL5074 , upgraded model: MTL5575

MTL5022 , upgraded model: MTL5522

MTL5031 , upgraded model: MTL5531 or MTL5533

MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

Digital Input     MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL4501-SR     1ch DI failsafe solid-state output + LFD alarm        

MTL4504          1ch DI relay output + LFD alarm + phase reversal

MTL4510          4ch DI solid-state output        

MTL4510B        4ch DI multifunction solid-state output

MTL4511          1ch DI relay output

MTL4513          2ch DI solid-state output        

MTL4514/B       1ch DI relay output + LFD alarm     

MTL4516          2ch DI relay output

MTL4516C        2ch DI with changeover relay output     

MTL4517          2ch DI relay output + LFD alarm     

Digital Output  MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL4521          Loop powered solenoid driver

MTL4521L         Loop powered solenoid driver IIC    

MTL4523          Solenoid driver with LFD

MTL4523L         Loop powered solenoid driver + LFD       

MTL4523R         Solenoid driver with LFD

MTL4523V/VL    Solenoid/Alarm driver with voltage control    

MTL4524           Switch operated solenoid driver     

MTL4524S         Switch operated solenoid driver, 24V override       

MTL4525           Switch operated solenoid driver low power   

MTL4526           2ch switch operated relay      

Analogue Input   MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL4541           1ch 2/3 wire Transmitter repeater

MTL4541A         1ch Transmitter repeater, passive input         

MTL4541AS       1ch Transmitter repeater, passive input, current sink   

MTL4541B          MTL4041B replacement

MTL4541P          MTL4041P replacement

MTL4541S          1ch 2/3 wire Transmitter repeater, current sink    

MTL4544            2ch 2/3 wire Transmitter repeater

MTL4544A          2ch Transmitter repeater, passive input         

MTL4544AS        2ch Transmitter repeater, passive input, current sink   

MTL4544B          MTL4044 replacement   

MTL4544D          2/3 wire transmitter repeater, dual output   

MTL4544S          2ch 2/3 transmitter repeater, current sink    

Analogue Output  MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL4546            1ch 4-20mA smart isolating driver + LFD        

MTL4546C          1ch 4-20mA smart isolating driver + oc LFD   

MTL4546Y          1ch 4-20mA smart isolating driver + oc LFD   

MTL4549            2ch 4-20mA smart isolating driver + LFD        

MTL4549C          2ch 4-20mA smart isolating driver + oc LFD   

MTL4549Y          2ch 4-20mA smart isolating driver + oc LFD   

Temperature Input   MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL4575            1ch Temperature converter with alarm

MTL4576-RTD     2ch Temperature converter, RTD   

MTL4576-THC     2ch Temperature converter, THC   

MTL4581            1ch mV/THC isolator for low-level signals     

Pulse and Vibration   MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL4531            1ch vibration probe interface

MTL4532            1ch pulse isolator, digital or analogue output         

MTL4533            2ch vibration probe interface

Fire and Smoke   MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL4561            2ch loop-powered, for fire and smoke detectors  

General               MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL4599             Dummy isolator      

MTL4599N           General purpose feed-through module

MTL4500 Series Barriers     MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL4501-SR, MTL4504, MTL4510, MTL4510B, MTL4511, MTL4513, MTL4514 (B)(D), MTL4516, MTL4516C, MTL4517, MTL4521, MTL4521L, MTL4523, MTL4523L, MTL4523R, MTL4523V, MTL4523VL, MTL4524, MTL4524S, MTL4525, MTL4526, MTL4531, MTL4532, MTL4533, MTL4541, MTL4541A, MTL4541AS, MTL4541B, MTL4541P, MTL4541S, MTL4541T, MTL4544, MTL4544A, MTL4544AS, MTL4544B, MTL4544D, MTL4544S, MTL4546, MTL4546C, MTL4546S, MTL4546Y, MTL4549, MTL4549C, MTL4549Y, MTL4561, MTL4575, MTL4576-RTD, MTL4576-THC, MTL4581

MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL5501-SR, MTL5510, MTL5510B, MTL5511, MTL5513, MTL5514, MTL5514D, MTL5516C, MTL5517, MTL5521, MTL5522, MTL5523, MTL5523V, MTL5523VL, MTL5524, MTL5525, MTL5526, MTL5531, MTL5532, MTL5533, MTL5541, MTL5541A, MTL5541AS, MTL5541S, MTL5544, MTL5544A, MTL5544AS, MTL5544D, MTL5544S, MTL5546, MTL5546Y, MTL5549, MTL5549Y, MTL5561, MTL5575, MTL5576-RTD, MTL5576-THC, MTL5581, MTL5582 MTL5544D MTL5575 MTL5516C MTL4541 MTL5541 MTL5546Y ICC212 IOP32 IOP32D

MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL7706+ MTL7707+ MTL7707P+ MTL7710+ MTL7715+ MTL7715P+ MTL7722+ MTL7728+ MTL7728- MTL7728AC MTL7728P+ MTL7729P+ MTL7741 MTL7742 MTL7743 MTL7744 MTL7745 MTL7755AC MTL7756AC MTL7758- MTL7758+ MTL7760AC MTL7761AC MTL7761PAC MTL7764+ MTL7764AC MTL7765AC MTL7766AC MTL7766PAC MTL7767+ MTL7778AC MTL7779+ MTL7787+ MTL7787- MTL7787P+ MTL7788+ MTL7788R+ MTL7789+ MTL7796- MTL7796+ MTL7798 MTL7799 

MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL705+ MTL706+ MTL707+ MTL707P+ MTL708+ MTL710+ MTL710AC MTL710P+ MTL715+ MTL715P+ MTL722+ MTL722P+ 

MTL728+ MTL728AC MTL728P+ MTL729P+ MTL751AC MTL755AC MTL758+ MTL760AC MTL761AC MTL761PAC MTL764+ MTL764AC MTL765AC MTL766AC MTL766PAC MTL767+ MTL768+ MTL772AC MTL778AC MTL779+ MTL786+ MTL787+ MTL787S+ MTL787SP+ MTL788+ MTL788R+ MTL791 MTL796+ MTL799

ICC   MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

ICC201-I1-O1 ICC201-I1-O2 ICC201-I2-O1 ICC201-I2-O2 ICC201-I2-O2 ICC211-I1-O2 ICC211-I2-O1 ICC211-I2-O2 ICC212 ICC221

ICC222 ICC241-T3 ICC241-T1 ICC241-T2 ICC301-I9-O1 ICC312 ICC316-T2 ICC317-T2-LFD ICC352-T1 ICC352-T2 ICC441 ICC446

MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL4510 MTL4510B MTL4511 MTL4513 MTL4514 MTL4514B MTL4514D MTL4516 MTL4516C MTL4517 MTL4521 MTL4521L MTL4523 MTL4524R MTL4523L MTL4524 MTL4524S MTL4524 MTL4526 MTL4531 MTL4532 MTL4541 MTL4541A MTL4541B MTL4544 MTL4544A MTL4544D MTL4544S MTL4546Y MTL4549 MTL4549Y MTL4546 MTL4573 MTL4575 MTL4576-RTD MTL4576-THC MTL4581 MTL4599 MTL4599N

MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL5510 MTL5510B MTL5511 MTL5513 MTL5514 MTL5514D MTL5516C MTL5517 MTL5521 MTL5522 MTL5523 MTL5523V MTL5523VL MTL5524 MTL5525 MTL5526 MTL5531 MTL5532 MTL5533 MTL5541 MTL5541AS MTL5541S MTL5544 MTL5544A MTL5544AS MTL5544D MTL5544S MTL5546 MTL5546Y MTL5549 MTL5549Y MTL5561 MTL5573 MTL5575 MTL5576-RTD MTL5576-THC MTL5581 MTL5582 MTL5599 MTL5314 MTL5501-SR MTL5510 MTL5510B 

MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL5511 MTL5513 MTL5514 MTL5516C MTL5517 MTL5521 MTL5522 MTL5523 MTL5524 MTL5525 MTL5526 MTL5531 MTL5532 MTL5533 MTL5541 MTL5541A MTL5541AS MTL5541S MTL5544 MTL5544A MTL5544AS MTL5544D MTL5544S 

MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL4501-SR MTL4504 MTL4510 MTL4510B MTL4511 MTL4513 MTL4514 MTL4516 MTL4516C MTL4517 MTL4521 MTL4521L MTL4523 MTL4523R MTL4523L MTL4524 MTL4524S MTL4525 MTL4526 MTL4531 MTL4532 MTL4533 MTL4541 MTL4541A MTL4541AS MTL4541B MTL4541P MTL4541S MTL4544 MTL4544A MTL4544AS MTL4544B MTL4544D MTL4544S MTL4546 MTL4546C MTL4546Y MTL4549 MTL4549C MTL4549Y MTL4561 MTL4575 MTL4576-RTD MTL4576-THC MTL4599 MTL4599N

MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL7706+ MTL7707+ MTL7707P+ MTL7710+ MTL7715+ MTL7715P+ MTL7722+ MTL7728+ MTL7728- MTL7728AC MTL7728P+ MTL7729P+ MTL7741 MTL7742 MTL7743 MTL7744 MTL7745 MTL7755AC MTL7756AC MTL7758- MTL7758+ MTL7760AC MTL7761AC MTL7761PAC MTL7764+ MTL7764AC MTL7765AC MTL7766AC MTL7766PAC MTL7767+ MTL7778AC MTL7779+ MTL7787+ MTL7787- MTL7787P+ MTL7788+ MTL7788R+ MTL7789+ MTL7796- MTL7796+ MTL7798 MTL7799 MTL705+ MTL706+ MTL707+ MTL707P+ MTL708+ MTL710+ MTL710AC MTL710P+ MTL715+ MTL715P+ MTL722+ MTL722P+ MTL728+ MTL728AC MTL728P+ MTL729P+ MTL751AC MTL755AC MTL758+ MTL760AC MTL761AC MTL761PAC MTL764+ MTL764AC MTL765AC MTL766AC MTL766PAC MTL767+ MTL768+ MTL772AC MTL778AC MTL779+ MTL786+ MTL787+ MTL787S+ MTL787SP+ MTL788+ MTL788R+ MTL791 MTL796+ MTL799

MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

SD07 SD16 SD32 SD55 SD07X SD16X SD32X SD55X SD150X SD275X SD07R SD16R SD32R SD55R SD07R3 SD16R3 SD32R3 SD55R3 SDRTD SD32T3 SDPSTN SLP07D SLP16D SLP32D MA15/D/1/SI MA15/D/2/SI MA15/D/1TT/SI MA15/D/2TT/L MA30/D/1/SI MA30/D/2/SI MA30/D/3/SI MA05/D/1 MA05/D/2 MA10/D/1 MA10/D/2 MA05/SC/1 MA05/SC/2 MA10/SC/1 MA10/SC/2 MA05/I/1 MA05/I/2 MA10/I/1 MA10/I/2

MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

TP48-N TP48-N-NDI TP48-I TP48-I-NDI TP48-G TP48-G-NDI TP48-3-N-NDI TP48-3-I-NDI TP48-3-G-NDI TP48-3-N TP48-3-I TP48-3-G TP48-4-N-NDI TP48-4-I-NDI TP48-4-G-NDI TP48-4-N TP48-4-I TP48-4-G ICC201-I1-O1 ICC201-I1-O2 ICC201-I2-O1 ICC201-I2-O2 ICC201-I2-O2 ICC211-I1-O2 ICC211-I2-O1 ICC211-I2-O2 ICC212 ICC221 ICC222 ICC241-T3 ICC241-T1 ICC241-T2 ICC301-I9-O1 ICC312 ICC316-T2 ICC317-T2-LFD ICC352-T1 ICC352-T2 ICC441 ICC446

MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL5011B MTL5012 MTL5012S MTL5014 MTL5015 MTL5017 MTL5018 MTL5018AC MTL5021 MTL5021-SR MTL5022 MTL5022-SR MTL5023 MTL5024 MTL5025 MTL5025-SR MTL5031 MTL5032 MTL5040 MTL5041 MTL5042 MTL5042-SR MTL5043 MTL5044 MTL5045 MTL5046 MTL5049 MTL5051 MTL5061 MTL5061-SR MTL5074 MTL5074-RTD MTL5081 MTL5082 MTL5099 MTL5314 MTL5344 MTL5349 MTL5531-111LI MTL5531-115LI MTL5991 MPA5500 MTL5501-SR MTL5510 MTL5510B MTL5511 MTL5513 MTL5514 MTL5514D MTL5516C MTL5517 MTL5521 MTL5522 MTL5523 MTL5523V MTL5523VL MTL5524 MTL5525 MTL5526 MTL5531 MTL5532 MTL5532-R MTL5533 MTL5541 MTL5541A MTL5541AS MTL5541S MTL5544 MTL5544A MTL5544AS MTL5544D MTL5544S MTL5546 MTL5546Y MTL5549 MTL5549Y MTL5561 MTL5573 MTL5575 MTL5575-R MTL5576-RTD MTL5576-THC MTL5581 MTL5582 MTL5599

MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL5510 MTL5510B MTL5511 MTL5513 MTL5514 MTL5514D MTL5516C MTL5517 MTL5521 MTL5522 MTL5523 MTL5523V MTL5523VL MTL5524 MTL5525 MTL5526 MTL5531 MTL5532 MTL5533 MTL5541 MTL5541AS MTL5541S MTL5544 MTL5544A MTL5544AS MTL5544D MTL5544S MTL5546 MTL5546Y MTL5549 MTL5549Y MTL5561 MTL5573 MTL5575 MTL5576-RTD MTL5576-THC MTL5581 MTL5582 MTL5599 MTL5314 MTL5011B MTL5014 MTL5022 MTL5024 MTL5031 MTL5042 MTL5042 MTL5046 MTL5074 MTL5082

MTL838C Fieldbus Networks Multiplexer Receivers and MTL838C Modbus Modules 

MTL4510 MTL4510B MTL4511 MTL4513 MTL4514 MTL4514B MTL4514D MTL4516 MTL4516C MTL4517 MTL4521 MTL4521L  MTL4523 MTL4524R MTL4523L MTL4524 MTL4524S MTL4524 MTL4526 MTL4531 MTL4532 MTL4541 MTL4541A MTL4541B MTL4544 MTL4544A MTL4544D MTL4544S MTL4546Y MTL4549 MTL4549Y MTL4546 MTL4573 MTL4575 MTL4576-RTD MTL4576-THC MTL4581 MTL4599 MTL4599N