MTL4021S SOLENOID/ALARM DRIVER with 24V logic override facility.
The MTL4021S 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. Provided that 24V dc is applied to the override input, the solenoid/alarm can be operated by the control input. However, if the 24V dc signal is removed, the solenoid/alarm is turned off. Earth fault detection can be provided by connecting an MTL4220 earth leakage detector to terminal 6.
MTL4000 series
Product Code Description
1. Analogue Input
MTL4041A Current repeater
MTL4041B Repeater power supply
MTL4041P High-power repeater power supply
MTL4041T Repeater power supply
MTL4042 Repeater power supply IIB
MTL4043 Repeater power supply HART
MTL4044 Repeater power supply
MTL4044D Repeater power supply
MTL4048 Loop powered isolator
2. Analogue Output
MTL4045B_C Isolating driver
MTL4046P High-power isolating driver HART
MTL4046S Isolating driver HART
MTL4046_C Isolating driver HART
3. Digital Input
MTL4013 Switch/proximity detector interface
MTL4014 Switch/proximity detector interface
MTL4015 Switch/proximity detector interface ~United Electric series
MTL4016 Switch/proximity detector interface
MTL4017 Switch/proximity detector interface
MTL4113P Failsafe switch/proximity detector interface
4. Digital Output
MTL4021 Solenoid/alarm driver
MTL4021S Solenoid/alarm driver
MTL4023 Solenoid/alarm driver
MTL4024 Solenoid/alarm driver
MTL4025 Solenoid/alarm driver
MTL4215 Switch operated relay
MTL4216 Switch operated relay
5. Temperature Input
MTL4073 Temperature converter
MTL4081 Millivolt/thermocouple isolator
MTL4083 Voltage isolator
6. General
MTL4031 Vibration transducer interface
MTL4032 Pulse isolator
MTL4061 Fire and smoke detector interface
MTL4099 Dummy isolator
MTL4099N General purpose feed-through module
MTL4220 Earth leakage detector
MTL4403 High-level trip amplifier
MTL4421RS General purpose switch operated relay
