MTL4511 MTL5511 Switch Proximity Detector Interface MTL4511 MTL5511 Safety Barriers Arrived

 

Description of MTL4511 MTL5511 Switch Proximity Detector Interface MTL4511 MTL5511 Safety Barriers Arrived
 

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 linefault-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.

 

SPECIFICATION of MTL4511 MTL5511 Switch Proximity Detector Interface MTL4511 MTL5511 Safety Barriers Arrived
 

One

Location of switches

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 of MTL4511 MTL5511 Switch Proximity Detector Interface MTL4511 MTL5511 Safety Barriers Arrived
 

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) of MTL4511 MTL5511 Switch Proximity Detector Interface MTL4511 MTL5511 Safety Barriers Arrived
 

User-selectable via switches on the side of the unit. A line fault is indicated by an LED. The channel output relay is de-energised if an input line fault is 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 of MTL4511 MTL5511 Switch Proximity Detector Interface MTL4511 MTL5511 Safety Barriers Arrived
 

LED indicators

Green: power indication

Yellow: channel status, on when output energised

Red: LFD indication, on when line fault detected

Maximum current consumption

25mA at 24V

Power dissipation within unit

0.6W at 24V

 

 

Safety description (each channel) of MTL4511 MTL5511 Switch Proximity Detector Interface MTL4511 MTL5511 Safety Barriers Arrived
 

Uo=10.5V Io=14mA Po=37mW Um = 253V rms or dc

SIL

2

IEC 61508:2010

SIL capable

These models have been assessed for use in IEC 61508 functional safety applications.See data on MTL web site and refer to the safety manual.


MTL4511 MTL5511 Switch Proximity Detector Interface MTL4511 MTL5511 Safety Barriers Arrived