MTL5516C Switch Proximity Detector Interface NAMUR Input, Relay Output

MTL5516C MTL Instruments Switch/Proximity Detector Interface

The MTL5516/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 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.
circuit in either field circuit.

SPECIFICATION
See also common specification

• 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) nominal
• 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 < 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
     Two single-pole relays with changeover contacts
     Note: reactive loads must be adequately suppressed
• Relay characteristics
     Response time: 10ms maximum
     Contact rating(Safe Area):
        250V ac, 2A, cosØ >0.7,
        40V dc, 2A, resistive load
     Contact rating(Zone 2):35V, 2A, 100VA.
• Maximum current consumption
     35mA at 24V
11.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)
     U_o=10.5V I_o=14mA P_o=37mW Um = 253V rms or dc

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Frequently Asked Questions

Q:Are the Products Genuine OEM Units?

A: These items have been certified by Achievers Automation Limited to be genuine OEM Units obtained through OEM or independent third-party channels.