in stocks

　　Quantity: 45pcs

　　Price: US$ 90

　　The MTL4511/MTL5511 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

　　See also common specification

　　Number of channels

　　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

　　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 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

　　Single pole relay with changeover contacts

　　Note: reactive loads must be adequately suppressed

　　Safe-area output

　　Single pole relay with changeover contacts

　　Note: reactive loads must be adequately suppressed

　　Relay characteristics

　　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)

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