رله بریر مدل MTL4516-5516

The MTL4516-5516c enable two safe-area loads 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 each channel is selected by a switch on the side of the module and output is provided by changeover relay contacts

Number of channels Two

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 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) nomina

Safe-area output Two single-pole relays with changeover contacts

Note: reactive loads must be adequately suppressed

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