MTL5541AS datasheet(13/29 Pages) EATON

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The given data is only intended as a product description and should not be re-

garded as a legal warranty of properties or guarantee. In the interest of further

technical developments, we reserve the right to make design changes.

With the MTL5523 interface, an on/off device in a hazardous area

can be controlled by a voltage signal in the safe area. It is suitable

for driving loads such as solenoids. Line fault detection (LFD), which

operates irrespective of the output state, is signalled by a safe-area

solid-state switch which de-energises MTL5523, if a field line is

open or short–circuited. Earth fault detection can be provided by

connecting an MTL4220 earth leakage detector to terminal 3.

SPECIFICATION

See also common specification

Number of channels

One

Location of load

Zone 0, IIC, T4–6 hazardous area if suitably certified

Div. 1, Group A, hazardous location

Minimum output voltage

Equivalent output circuit

Hazardous-area output

Minimum output voltage: 12.8V at 48mA

Maximum output voltage: 24V from 180

Current limit:

48mA

Output ripple

< 0.5% of maximum output, peak to peak

Control input

Suitable for switch contacts, an open collector transistor or logic

drive

Output turns on if input switch closed, transistor on or

< 1.4V applied across terminals 11 & 12

Output turns off if input switch open, transistor off or

> 4.5V applied across terminals 11 & 12

Response time

Output within 10% of final value within 100ms

Line fault detection (LFD)

Open or short circuit in field cabling de-energises solid state

line-fault signal.

LFD transistor is switched on, provided that the field circuit

impedance is > 55

Ω and < 6k5Ω.

Line fault signal characteristics

Maximum off-state voltage: 35V

Maximum off-state leakage current: 10µA

Maximum on-state voltage drop: 2V

Maximum on-state current: 50mA

Note: LFD signal is Zener-diode protected against inductive loads

MTL5523

SOLENOID/ALARM DRIVER

with line fault detection, IIC

LED indicators

Green: power indication

Yellow: output status, on when output circuit is active

Red: LFD indication, on when line fault is detected

Maximum current consumption

100mA at 24V dc

Power dissipation within unit

1.2W with typical solenoid valve, output on

2.0W worst case

Safety description

o =25V

o =147mA

o =919mW

m = 253V rms or dc

21.4V minimum

180W maximum

Current limit: 48mA

Output current (mA)

Output

voltage

(V)

21.4

12.8

EPS5523-2

Nov 2008

Hazardous area

Safe area

Solenoid, alarm or

other IS device

Vs+

20 to 35V dc

Line fault

detection

* link to reverse phase

To earth

leakage

detector

Terminal

Function

Output –ve

Output +ve

To earth leakage detector*

Line fault signal -ve

Phase reversal link

Line fault signal +ve

Control –ve

Control +ve

Supply –ve

Supply +ve

*Signal plug HAZ1-3 is required for access to this function

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