BASIC INFO
MTL5514 Switch Proximity Detector Interface With Line Fault Detection Alarm
Digital Input modules of MTL5514 Switch Proximity Detector Interface With Line Fault Detection Alarm
The Digital Input (DI) module range offers solid state or relay output switches in a safe area that respond to input switches located in a hazardous area. Single or multiple channel (2 or 4) options are available, as well as Line-Fault Detection (LFD).
Modules with LFD can recognise open or short circuit conditions on the input wires going to the field sensors, and some DI modules have the facility to reverse the effect of the input on the output i.e. phase reversal.
These options are chosen with switches located on the edge of the module on the hazardous area terminal side. In some applications it may be easier to set these switches before fitting the module to the DIN-rail.
MTL5514 - switch/proximity detector interface of MTL5514 Switch Proximity Detector Interface With Line Fault Detection Alarm
Single channel, with line-fault detection and phase reversal
The MTL5514 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. Line-Fault Detect and Phase Reversal for the channel are selected by DIL switches on the side of the module and output is provided by the changeover relay contacts.
Channel 1 only switch settings apply.
For switch sensor inputs, with LFD selected, make sure resistors (22kΩ and 680Ω) are fitted.
Note: For reliable, long-term operation the load on the output switching relays should be not less than 50mW, e.g. 10mA at 5V DC.
MTL5514 Switch Proximity Detector Interface With Line Fault Detection Alarm
SPECIFICATION of MTL5514 Switch Proximity Detector Interface With Line Fault Detection Alarm
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 of MTL5514 Switch Proximity Detector Interface With Line Fault Detection Alarm
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 of MTL5514 Switch Proximity Detector Interface With Line Fault Detection Alarm
MTL4514 & MTL5514
Channel: Single pole relay with changeover contacts
LFD: Single pole relay with changeover contacts
MTL4514B
Channel: Single pole relay
LFD: Single pole relay
Note: reactive loads must be adequately suppressed
MTL5514 Switch Proximity Detector Interface With Line Fault Detection Alarm
Models of MTL5500 Series :
MTL5018AC
MTL5501-SR
MTL5510
MTL5510B
MTL5511
MTL5513
MTL5514
MTL5514D
MTL5516C
MTL5517
MTL5521
MTL5522
MTL5523
MTL5523V – V
MTL5524
MTL5525
MTL5526
MTL5541
MTL5541A
MTL5541AS
MTL5541S
MTL5544
MTL5544A
MTL5544AS
MTL5544D
MTL5544S
MTL5546
MTL5546Y
MTL5549
MTL5549Y
MTL5573
MTL5575
MTL5576-RTD
MTL5576-THC
MTL5581
MTL5582
MTL5582B
MTL5991
MTL5531
MTL5532
MTL5533
MTL5561
MPA5500
MTL5051
MTL5053
MTL5314
MTL5599
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