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
| Minimum output voltage: Maximum output voltage: | 13.6V at 48mA24V from 180Ω |
| Maximum off-state output voltage: 4V from 180Ω | |
| Current limit: Output ripple | 48mA minimum |
< 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)