The MTL5514-T enables a safe-area load to be controlled, through a relay, by a proximity detector or switch located in a hazardous area. Line faults are signalled through a separate relay and indicated on the top of the module. Switches are provided to select phase reversal and to enable the line fault detection.
| Number of channels | One |
|---|---|
| Location of switch | 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. Line fault relay is energised and channel output relay de-energised if input line-fault 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 |
Channel: Single pole relay with changeover contacts LFD: Single pole relay with changeover contacts Note: reactive loads must be adequately suppressed |
Transmitter, Safety barries, Flow meters, Probe, Sensor, Transducer. Valves, Analysis meter, Positioner, Acuator, etc.
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