User's Manual

8
RF-Smart – User Manual Rev 1.1 – 12/11/2019
3. Interface description
3.1 Molex 4 pin connector – Power connector
3.1.1 Power Supply
The power supply of the RF-Gate Terminal requires a single voltage source of POWER
6V-55V capable of providing a peak during an active transmission. The RF-Gate Terminal is
protected against supply voltage reversal. An internal fuse 1.1A 60V ensures an electrical
safety according to EN60950-1. This fuse is not removable. A fast blow fuse of 0.8A is
necessary for 24V power supply system (for vehicles). The power supply recommended
being any safety approved power supply certified IEC 60950-1 or EN 60950-1 or UL 60950-1
with limited output current up to 2A. The type of the receptacle assembled on the RF-Gate
Terminal is 4 pin Micro Mate-N-LOK 3mm (0.11 inch) from MOLEX.
Pin
Signal name
Use
1
POWER
Input Power supply range 6-55V
2
Power Enable
Control pin to turn ON/OFF Terminal power.
When putting this pin to voltage >6V the unit will be turn
OFF.
When putting this pin OPEN or GND the unit will be turn
ON.
3
GND
Ground
4
Analog
Analog Input 0-30V or current measurement 4-20mA
Pin assignment of the power plug including power supply and Power Enable
•
Male 4-pole plug for power supply
To use with MOLEX MICRO FIT 3mm
PART NUMBER 43025-0400
3.1.2 Supply voltage requirements
The DC power supply must be connected to the POWER input:
• Input voltage range 6 - 55V DC
• Nominal Voltage 12V DC