MTL5544 repeater power supply product introduction:
MTL4544/S – MTL5544/S REPEATER POWER SUPPLY 2-channel, 4/20mA, HART®, 2- or 3- wire transmitters
The MTLx544 provides fully-floating dc supplies for energising two conventional 2-wire or 3-wire 4/20mA or HART transmitters located in a hazardous area, and repeats the current in other circuits to drive two safe-area loads. For smart transmitters, the unit allows bi-directional transmission of digital communication signals superimposed on the 4/20mA loop current. Alternatively, the MTLx544S acts as a current sink for a safe-area connection rather than driving a current into the load. Separately powered current sources, such as 4-wire transmitters, can be connected but will not support HART communication.
SPECIFICATION
See also common specification
Number of channels
Two
Location of transmitter
Zone 0, IIC, T4–6 hazardous area if suitably certified
Div. 1, Group A hazardous location
Safe-area output
Signal range: 4 to 20mA
Under/over-range: 0 to 24mA
Safe-area load resistance (MTLx 544)
@ 24mA: 0 to 360Ω
@ 20mA: 0 to 450Ω
Safe-area load (MTLx544S)
Current sink: 600Ω max.
Maximum voltage source: 24V dc
Safe-area circuit output resistance: > 1MΩ
Safe-area circuit ripple
< 50µA peak-to-peak
Hazardous-area input
Signal range: 0 to 24mA (including over-range)
Transmitter voltage: 16.5V at 20mA
Transfer accuracy at 20°C
Better than 15µA
Temperature drift
< 0.8µA/°C
Response time
Settles to within 10% of final value within 50µs
Communications supported
HART (terminals 1 & 2 and 4 & 5 only)
LED indicator
Green: power indication
Maximum current consumption (with 20mA signals)
96mA at 24V dc
Power dissipation within unit (with 20mA signals)
MTLx544 1.4W @ 24V dc
MTLx544S 1.9W @ 24V dc
Safety description (each channel)
Terminals 2 to 1 and 3, and 5 to 4 and 6:
Uo=28V Io=93mA Po=651mW Um = 253V rms or dc
Terminals 1 to 3 and 4 to 6:
Simple apparatus ≤1.5V, ≤0.1A and ≤25mW; can be connected
without further certification into any IS loop with an open-circuit
voltage <28V
MTL5500 Series Barriers
Part Number
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
MTL5500 series
Part NumberDescription
Digital Input
MTL5501-SR 1ch DI failsafe solid-state output + LFD alarm
MTL55104ch DI solid-state ouput
MTL5510B4ch DI multifunction solid-state output
MTL55111ch DI relay output
MTL5513 2ch DI solid-state output
MTL5514 1ch DI relay output + LFD alarm
MTL5514D 1ch switch/prox input, dual output relay
MTL5516C2ch DI with changeover relay output
MTL55172ch DI relay output + LFD alarm
Digital Output
MTL5521Loop powered solenoid driver, IIC
MTL5522 Loop powered solenoid driver, IIB
MTL5523Solenoid driver with LFD
MTL5523V - VL Solenoid/Alarm driver with voltage control
MTL5524 Switch operated solenoid driver
MTL5525Loop powered solenoid driver low power
MTL55262ch switch operated relay
Analogue Input
MTL55411ch 2/3 wire Transmitter repeater
MTL5541A 1ch Transmitter repeater, passive input
MTL5541AS1ch Transmitter repeater, passive input, current sink
MTL5541S1ch 2/3 wire Transmitter repeater, current sink
MTL5544 2ch 2/3 wire Transmitter repeater
MTL5544A 2ch Transmitter repeater, passive input
MTL5544AS 2ch Transmitter repeater, passive input, current sink
MTL5544D1ch 2/3 wire Transmitter repeater, dual output
MTL5544S2ch 2/3 wire Transmitter repeater, current sink
Analogue Output
MTL55461ch 4-20mA smart isolating driver + LFD
MTL5546Y 1ch 4-20mA smart isolating driver + oc LFD
MTL55492ch 4-20mA smart isolating driver + LFD
MTL5549Y2ch 4-20mA smart isolating driver + oc LFD
Temperature Input
MTL55751ch Temperature converter, RTD / THC with alarm
MTL5576-RTD2ch Temperature converter, RTD
MTL5576-THC2ch Temperature converter, THC
MTL55811ch mV/THC isolator for low-level signals
MTL55821ch resistance isolator
Pulse and Vibration
MTL5531 1ch vibration probe interface
MTL5532 1ch pulse isolator, digital or analogue output
MTL55332ch vibration probe interface
Fire and Smoke
MTL5561 2ch loop-powered, for fire and smoke detectors
General
MPA5500 85 - 265V ac power adaptor
MTL5599Dummy isolator
MTL599124V dc power supply