MTL4517 – MTL5517 SWITCH/ PROXIMITY DETECTOR INTERFACE

Overview

MTL4517 – MTL5517 SWITCH/ PROXIMITY DETECTOR INTERFACE

The British MTL Safety Barrier – MTL4517 module controls 2 safety zone loads through a proximity switch or switch in the danger zone. A line fault is signaled via a separate relay while indicating at the top of the module. The switch on the UK MTL Safety Barrier-MTL4517 module is used to select the inverting position and enable line fault detection.

The MTL5500 series is a versatile product at the application level and is simple to operate. It is manufactured with technology and has been well-verified. These comparative attributes are derived from advances in MTL’s expertise in the design and manufacture of intrinsically safe optoisolators and the application of MTL’s innovative technologies to achieve the required separation and isolation circuits. This MTL5500 (DIN-rail mount) and MTL4500 (backplane mount) are recommended to share a common design, differing only in mechanical mounting and connection methods.

MTL4517 – MTL5517 Related Products

• MTL4501-SR Fail-safe solid-state output + line fault detection (LFD) alarm
• MTL4504  Switch/proximity switch input, inverting + line fault detection (LFD)
• MTL4510  Switch/proximity switch input, solid-state output
• MTL4510B Multi-function switch/proximity switch input, solid-state output
• MTL4511  Switch/proximity switch input, C/O relay output
• MTL4513  Switch/proximity switch input, solid state output
• MTL4514  Switch/proximity switch input, relay + line fault detection (LFD)
• MTL4514B Switch/proximity switch input, relay + line fault detection (LFD)
• MTL4516  Switch/proximity switch input, relay + line fault detection (LFD) output
• MTL4516C Switch/proximity switch input, C/O relay + line fault detection (LFD) output
• MTL4517  Switch/proximity switch input, relay + line fault detection (LFD) output
• MTL4521  Loop-powered solenoid valve actuated isolation barrier, IIC
• MTL4521L Loop-powered solenoid valve actuated isolation barrier, IIC
• MTL4523  Solenoid operated isolator with line fault detection (LFD), IIC
• MTL4523L Loop-powered solenoid with line fault detection (LFD) actuated isolation barrier, IIC
• MTL4523R Solenoid valve with inverting line fault detection (LFD) actuated isolation barrier, IIC
• MTL4523V Solenoid operated isolator with line fault detection (LFD), IIC
• MTL4524         Switch input, solenoid valve actuates the isolation barrier
• MTL4524S Switch input, solenoid valve driven isolation barrier, 24V override
• MTL4525  Switch input, solenoid valve actuated isolation barrier, low power
• MTL4526  Switching outputs, relays
• MTL4531  Vibration probe isolation barrier
• MTL4532  Pulse isolator, digital or analog output
• MTL4533  Vibration probe safety barrier
• MTL4541  2/3-wire transmitter isolation barrier
• MTL4541A Transmitter repeater, active input
• MTL4541AS Transmitter repeater, active input, passive output
• MTL4541S 2/3-wire transmitter isolation barrier, passive output
• MTL4544  2/3-wire transmitter isolation barrier
• MTL4544A Transmitter repeater, active input
• MTL4544AS Transmitter repeater, active input, passive output
• MTL4544S 2/3-wire transmitter isolation barrier, passive output
• MTL4544D 2/3-wire transmitter isolation barrier, 1 in and 2 out
• MTL4546  4-20mA intelligent isolated drive + line fault detection (LFD)
• MTL4546Y 4-20mA Intelligent Isolation Drive + OC Line Fault Detection (LFD)
• MTL4549  4-20mA intelligent isolated drive + line fault detection (LFD)
• MTL4549Y 4-20mA Intelligent Isolation Drive + OC Line Fault Detection (LFD)

SPECIFICATION

Number of channels: Two

Location of switch:

Zone 0, IIC, T6 hazardous area, 

Div.1, Group A, hazardous location

Location of the 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)

The voltage applied to the sensor: 7 to 9V DC from 1 kΩ ±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 by switches on the side of the module.

Line faults are indicated by the LED for each channel.

The line fault relay is energized and the channel output relay is de-energized if an input line fault detected

The 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 the switch

Safe-area output:

Channel: Two single-pole relays with normally open contacts

LFD: Single pole relay with changeover contact (MTL4517)

Single pole relay with normally open contact (MTL5517

Note: reactive loads must be adequately suppressed

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