MTL4524 Solenoid / Alarm Driver switch operated with override,IIC

 

The MTLx524 enables an on/off device in a hazardous area to be

controlled by a volt-free contact or logic signal in the safe area. It can

drive loads such as solenoids, alarms, LEDs and other low power

devices that are certified as intrinsically safe or are classified as nonenergy

storing simple apparatus.

The MTL4524 allows a second safe-area switch or logic signal to be

connected enabling the output to be disabled to permit, for example, a

safety system to override a control signal.

The MTL5524 has its phase reversed by connecting a wire link between

pins 8 and 9.

 

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

 

 

Hazardous-area output

Minimum output voltage: 13.6V at 48mA

Maximum output voltage: 24V from 180Ω

Maximum off-state output voltage: 4V from 180Ω

Current limit: 48mA minimum

Output ripple

< 0.5% of maximum output, peak-to-peak

Control input

Suitable for switch contacts, an open collector transistor or logic drive

0 = input switch closed, transistor on or <1.4V applied

1 = input switch open, transistor off or >4.5V applied

Override input on MTL4524

An open collector transistor or a switch connected across the terminals can

be used to turn the output off whatever the state of the control input

0 = transistor on or switch closed

1 = transistor off or switch open

Control and override inputs on MTL4524

 

LED indicators

Green: power indication

Yellow: output status, on when output active

Maximum current consumption

100mA at 24V dc

Power dissipation within unit

1.3W with typical solenoid valve, output on

1.9W worst case

Safety description

Uo=25V Io=147mA Po= 0.92W Um = 253V rms or dc