MTL5521 isolated barrier, MTL5521 with complete serial number on the product surface. 

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MTL5521 isolated barrier product introduction:

 MTL5521  Loop powered solenoid driver, IIC

Number of channels ：Two

Location of switch

Zone 0, IIC, T6 hazardous area

Div.1, Group A, hazardous location

Location of proximity detector

Zone 0, IIC, T4–6 hazardous area, if suitably certified

Div.1, Group A, hazardous location

Hazardous-area inputs Inputs

conforming to BS EN60947–5–6:2001 standards for proximity detectors (NAMUR)

Voltage applied to sensor

7 to 9V dc from 1kΩ ±10% Input/output characteristics

Normal phase

Outputs closed if input > 2.1mA (< 2kΩ in input circuit)

Outputs open if input < 1.2mA (> 10kΩ in input circuit)

Hysteresis: 200µA (650Ω) nominal

Line fault detection (LFD) (when selected)

User selectable by switches on the side of the module. Line faults are indicated by the LED for each channel. Line fault relay is energised and channel output relay de-energised if input line-fault detected

Open-circuit alarm on if Iin < 50µA

Open-circuit alarm off if Iin > 250µA

Short-circuit alarm on if Rin < 100Ω

Short-circuit alarm off if Rin > 360Ω

Note: Resistors must be fitted when using the LFD facility with a contact input 500Ω to 1kΩ in series with switch 20kΩ to 25kΩ in parallel with switch

Safe-area output

Channel: Two single-pole relays with normally open contacts

LFD: Single pole relay with changeover contact (MTL4517) Single pole relay with normally open contact (MTL5517)

Note: reactive loads must be adequately suppressed

Maximum current consumption

35mA at 24V

Power dissipation within unit

0.84W at 24V

LED indicators

Green: power indication

Yellow: two: channel status, on when output energised

Red: two: LFD indication, on when line fault detected Safety description (each channel) Uo=10.5V Io=14mA Po=37mW Um = 253V rms or dc

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