MTL4511/MTL5511 - Switch / proximity detector interface
  • MTL4511/MTL5511 - Switch / proximity detector interface

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Manufacturer: MTL Instruments

4-channel separator MTL4511-MTL5511

The MTLx511 enables a safe-area load to be controlled by a switch or proximity detector located in a hazardous-area. When selected, open or short circuit conditions in the field wiring are detected by the line-fault-detect (LFD) facility and also indicated on the top of the module. Phase reversal for the channel is selected by a switch on the side of the module and output is provided by changeover relay contacts.


Specificationa


Number of channels 4, configured by switches
Location of switches Zone 0, IIC, T6 hazardous area
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 – 9V DC for 1 kOhm +/- 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 via switches on the side of the unit
Open-circuit alarm on if Iin < 50 uA
Open-circuit alarm off if Iin > 250 uA
Short-circuit alarm on if Rin < 100 Ohm
Short-circuit alarm off if Rin > 360 Ohm
Safe-area outputs Single pole relay with changeover contacts
LED indicators Green: power indication
Yellow: four: on when output active
Red: LFD indication + faulty channel’s yellow LED flashes
Maximum current consumption 25mA at 24V (with all output channels energised)
Power dissipation within unit 0.6W at 24V
Safety description (each channel) Uo=10.5V Io=14mA Po=37mW Um = 253VDC

(*) Resistors must be fitted when using the LFD facility with a contact input:
500 Ohm to 1kΩ in series with switch
20 kOhm to 25kΩ in parallel with switch
(**) Note: reactive loads must be adequately suppressed.

Relay characteristics


 MTL4511MTL5511
Response time Max 10 ms Max 10 ms
Contact rating (Safe Area) 10W, 0.5A, 35V DC 250V ac, 2A, cosØ >0.7, 40V dc, 2A, resistive load
Contact rating (Zone 2) 10W, 0.5A, 35V DC 35V, 2A, 100VA



SIL capable


These models have been assessed for use in IEC 61508 functional safety applications. SIL2 capable for a single device (HFT=0) SIL3 capable for multiple devices in safety redundant configurations (HFT=1).

See data on MTL web site and refer to the safety manual.



MTL4511





MTL5511


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The MTLx511 enables a safe-area load to be controlled by a switch or proximity detector located in a hazardous-area. When selected, open or short circuit conditions in the field wiring are detected by the line-fault-detect (LFD) facility and also indicated on the top of the module. Phase reversal for the channel is selected by a switch on the side of the module and output is provided by changeover relay contacts.


Specificationa


Number of channels 4, configured by switches
Location of switches Zone 0, IIC, T6 hazardous area
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 – 9V DC for 1 kOhm +/- 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 via switches on the side of the unit
Open-circuit alarm on if Iin < 50 uA
Open-circuit alarm off if Iin > 250 uA
Short-circuit alarm on if Rin < 100 Ohm
Short-circuit alarm off if Rin > 360 Ohm
Safe-area outputs Single pole relay with changeover contacts
LED indicators Green: power indication
Yellow: four: on when output active
Red: LFD indication + faulty channel’s yellow LED flashes
Maximum current consumption 25mA at 24V (with all output channels energised)
Power dissipation within unit 0.6W at 24V
Safety description (each channel) Uo=10.5V Io=14mA Po=37mW Um = 253VDC

(*) Resistors must be fitted when using the LFD facility with a contact input:
500 Ohm to 1kΩ in series with switch
20 kOhm to 25kΩ in parallel with switch
(**) Note: reactive loads must be adequately suppressed.

Relay characteristics


 MTL4511MTL5511
Response time Max 10 ms Max 10 ms
Contact rating (Safe Area) 10W, 0.5A, 35V DC 250V ac, 2A, cosØ >0.7, 40V dc, 2A, resistive load
Contact rating (Zone 2) 10W, 0.5A, 35V DC 35V, 2A, 100VA



SIL capable


These models have been assessed for use in IEC 61508 functional safety applications. SIL2 capable for a single device (HFT=0) SIL3 capable for multiple devices in safety redundant configurations (HFT=1).

See data on MTL web site and refer to the safety manual.



MTL4511





MTL5511


Less
Read more

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