The MTL4524S enables an on/off device in a hazardous area to be controlled by a volt-free contact or a floating 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 non-energy storing simple apparatus. By connecting a second safe-area voltage, the output can be disabled to permit, for example, a safety system to override a control signal. 

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

22.2

22.2

13.6

Hazardous-area output

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

Control input (must be fully-floating)

Suitable for switch contacts or an opto-isolator

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

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

Override input

A 24V logic signal applied across the terminals allows the solenoid/

alarm to be operated by the control input. If it is disconnected, the

solenoid/alarm is off.

0 = < 2.0V applied across terminals 8 & 9

1 = > 9.0V applied across terminals 8 & 9

(nominal switching point 4.5V)