MTL4516 MTL Instruments Switch Proximity Detector Interface

MTL4516 MTL Instruments Switch Proximity Detector Interface

MTLx516/C 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 line-fault-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
Specification
Product Type : Switch / Proximity Detector Interface

Number of channels : Two

Location of switches

Zone 0, IIC, T6 hazardous area

Div. 1, Group A hazardous location

Location of proximity detector

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 1k? ±10%

Input/output characteristics

Normal phase

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

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

Hysteresis : 200µA (650?) nomina

Line fault detection (LFD) (when selected)

User-selectable via switches on the side of the unit. Line faults are indicated by an LED for each channel. 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 < 100?

Short-circuit alarm off if Rin > 360?

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

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

Dimensions ( D x W x H ) : 1.58 cm x 10.98 cm x 12.36 cm

Weight : Approx. 0.11 Kg

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