Applications

• General power supply for smaller measurement systems requiring fixed stabilized 24 VDC, or supply for any other sensors, transmitters or as a general variable power supply 5 to 24 VDC.
• Two units may be connected in parallel for higher output current or connected in series for plus/minus or higher output voltage.

Features

• Mains voltage input
• Isolation 3.75 kVAC
• Adjustable output 5-24 VDC, max. 7 W
• Short-circuit protection
• Thermal overload protection
• Standard 11-pole relay socket

Technical characteristics:

The unit is based on secondary switchmode technology enabling an adjustable output with a minimum loss of power. Isolation test voltage between input and output is 3.75 kVAC and min. clearance and creepage distances are 6 mm, according to EN60 742. This makes the unit suitable for PELV/SELV applications. The double insulated safety transformer includes a 100°C thermal fuse, which switches off the input before the transformer is overheated. When the temperature returns below 100°C the thermal fuse will automatically switch on the power supply.

Mounting:

The 2220 is mounted via the 11-pole socket mounting bracket, which can be fitted directly on the bottom plate, or to a DIN Rail. A front panel mounting frame can be used for enclosure mounting and a retention clip is available for securing the unit for installations with high vibrations. Note: To achieve maximum cooling, mount in a vertical position with a minimum of 10mm between neighbouring units.

Input:

Standard supply voltages in accordance to the specified input voltages ±10%. Galvanic isolation is ensured by the double insulated safety transformer.

Output:

The output is adjustable from front potentiometer in the range 5-24vDC. A green LED indicates an active output. Short-circuit protection limits the current to 2.2Amps (typical). Output is isolated 3.75 kVAC from input.

Options: