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The MTL4500 range of backplane mounting intrinsic safety isolators offers an innovative solution for protecting electrical signals in potentially flammable or other hazardous areas. Helping to ensure a safe work environment and protects those nearby from explosion risks.
With industry leading features and performance in a single package, MTL4500 utilises innovative planar transformer technology at its heart and extensive automation in construction. It is designed with the requirements of system vendors in mind, for ‘project focussed’ applications such as Distributed Control Systems (DCS), Emergency Shutdown Systems (ESD) and Fire and Gas monitoring (F&G).
With fast module installation, easier system integration, improved performance from low-power circuit designs and more I/O channels in each module giving the highest packing density on the market plus 3 port isolation as standard.
The MTL4546S accepts a 4/20mA floating signal from a safe-area controller to drive a current/pressure converter (or any other load up to 710?) in a hazardous area. For HART valve positioners, the module also permits bi-directional transmission of digital communication signals.Process controllers with a readback facility can detect open circuits in the field wiring: if these occur, the current taken into the terminals drops to a preset level. The reduced maximum open-circuit voltage permits the use of longer field lines compared to MTL4546
See also common specification
Number of channels
One
Location of I/P converter
Zone 0, IIC, T4–6 hazardous area if suitably certified
Div. 1, Group A, hazardous location
Working range
4 to 20mA
Digital signal bandwidth
500Hz to 10kHz
Maximum load resistance
710? (14.2V at 20mA)
Minimum load resistance
90?
Output resistance
1M?
Under/over range capability
Under range = 1mA
Over range = 24mA (load ≤ 520?)
Input and output circuit ripple
40μA peak-to-peak
Transfer accuracy at 20°C
Better than 20μA
Temperature drift
1.0μA/°C
Input characteristics
Field wiring state
Normal 6.0V
Open-circuit 0.9mA
Short-circuit N.A.
Response time
Settles within 200μA of final value within 100ms
Communications supported
HART
LED indicator
Green: power indication
Maximum current consumption (with 20mA signals into 250? load)
35mA at 24V dc
Power dissipation within unit (with 20mA signals into 250? load)
0.8W at 24V
Safety description
Vo=22V Io=100mA Po=550mW Um = 253V rms or dc
Product CodeTypeSpecificationCertificationFunctional safety
MTL4501-SRDigital Input1ch DI failsafe solid-state output + LFD alarmATEX ApprovedFSM
MTL4504Digital Input1ch DI relay output + LFD alarm + phase reversalATEX ApprovedFSM
MTL4510Digital Input4ch DI solid-state outputATEX
MTL4510BDigital Input4ch DI multifunction solid-state outputATEX
MTL4511Digital Input1ch DI relay outputATEX ApprovedFSM
MTL4513Digital Input2ch DI solid-state outputATEX
MTL4514DDigital Input1ch switch / prox input, dual output relayATEX ApprovedFSM
MTL4514NDigital Input1 ch switch / prox detector, LFD, phase reversalATEX ApprovedFSM
MTL4514BDigital Input1ch DI relay output + LFD alarmATEX ApprovedFSM
MTL4516Digital Input2ch DI relay outputATEX ApprovedFSM
MTL4516CDigital Input2ch DI with changeover relay outputATEX ApprovedFSM
MTL4517Digital Input2ch DI relay output + LFD alarmATEX ApprovedFSM
MTL4521Digital OutputLoop powered solenoid driverATEX ApprovedFSM
MTL4521LDigital OutputLoop powered solenoid driver IICATEX ApprovedFSM
MTL4523Digital OutputSolenoid driver with LFDATEX ApprovedFSM
MTL4523LDigital OutputLoop powered solenoid driver + LFDATEX ApprovedFSM
MTL4523RDigital OutputSolenoid driver with LFDATEX ApprovedFSM
MTL4523V/VLDigital OutputSolenoid / Alarm driver with voltage controlATEX ApprovedFSM
MTL4524Digital OutputSwitch operated solenoid driverATEX ApprovedFSM
MTL4524SDigital OutputSwitch operated solenoid driver, 24V overrideATEX ApprovedFSM
MTL4525Digital OutputSwitch operated solenoid driver low powerATEX ApprovedFSM
MTL4526Digital Output2ch switch operated relayATEX
MTL4541Analogue Input1ch 2/3 wire Transmitter repeaterATEX ApprovedFSM
MTL4541AAnalogue Input1ch Transmitter repeater, passive inputATEX ApprovedFSM
MTL4541ASAnalogue Input1ch Transmitter repeater, passive input, current sinkATEX ApprovedFSM
MTL4541BAnalogue InputMTL4041-B replacementATEX ApprovedFSM
MTL4541PAnalogue InputMTL4041-P replacementATEX
MTL4541SAnalogue Input1ch 2/3 wire Transmitter repeater, current sinkATEX ApprovedFSM
MTL4541TAnalogue Input2/3 wire Transmitter repeaterATEX
MTL4544Analogue Input2ch 2/3 wire Transmitter repeaterATEX ApprovedFSM
MTL4544AAnalogue Input2ch Transmitter repeater, passive inputATEX ApprovedFSM
MTL4544ASAnalogue Input2ch Transmitter repeater, passive input, current sinkATEX ApprovedFSM
MTL4544BAnalogue InputMTL4044 replacementATEX ApprovedFSM
MTL4544DAnalogue Input2/3 wire transmitter repeater, dual outputATEX ApprovedFSM
MTL4544SAnalogue Input2ch 2/3 transmitter repeater, current sinkATEX ApprovedFSM
MTL4546Analogue Output1ch 4-20mA smart isolating driver + LFDATEX ApprovedFSM
MTL4546CAnalogue Output1ch 4-20mA smart isolating driver + oc LFDATEX ApprovedFSM
MTL4546SAnalogue Output1ch 4-20mA HART isolating driver + LFDATEX
MTL4546YAnalogue Output1ch 4-20mA smart isolating driver + oc LFDATEX ApprovedFSM
MTL4549Analogue Output2ch 4-20mA smart isolating driver + LFDATEX ApprovedFSM
MTL4549CAnalogue Output2ch 4-20mA smart isolating driver + oc LFDATEX ApprovedFSM
MTL4549YAnalogue Output2ch 4-20mA smart isolating driver + oc LFDATEX ApprovedFSM
MTL4573Temperature Input1ch Temperature converter, RTD / THCATEX
MTL4575Temperature Input1ch Temperature converter, RTD / THC with alarmATEX
MTL4576-RTDTemperature Input2ch Temperature converter, RTDATEX
MTL4576-THCTemperature Input2ch Temperature converter, THCATEX
MTL4581Temperature Input1ch mV/THC isolator for low-level signalsATEX
MTL4582BTemperature Input1ch resistance isolator to repeat RTD signalsATEX
MTL4531Pulse and Vibration1ch vibration probe interfaceATEX ApprovedFSM
MTL4532Pulse and Vibration1ch pulse isolator, digital or analogue outputATEX
MTL4561Fire and Smoke2ch loop-powered, for fire and smoke detectorsATEX ApprovedFSM
MTL4599GeneralDummy isolator
MTL4599NGeneralGeneral purpose feed-through modu
