The power supply PS2-60/27

Foxtrot basic modules 17.03.2020 16:43 17.03.2020 16:43

The power supply PS2-60/27 (order. no.: TXN 070 40) is a mains switch-mode power supply with stabilized output voltage at 27.2VDC/2.2A and 12VDC/0.3A with a total power output of 60 W. It is designed to supply power to the Foxtrot control systems with a direct backup option from 24V batteries charged from this source.

The output voltage of 12VDC serves for powering security and fire alarm detector units and it is active even during a power outage, provided charged batteries are connected to the 27.2V source output.

 

The module does not require active cooling, it is powered from a standard TN-S or TN-C 230 VAC grid.

The input of 230 VAC power supply is equipped with an internal thermal fuse 2.5 A/35 type T, MT series, with breaking capacity at 35 A.

 

The input of 230 V power supply should always have surge protection. In Chapter 13.5 are described the basic principles of surge protection, including examples of connection of SPD type 3 and the power supply.

 

The PS2-60/27 power supply meets the requirements for safety transformers and is a source of safety extra low voltage (SELV).

 

Table. 1 Basic parameters of the PS2-60/27 power supply

Input voltage

230 VAC +15 % -25 % 1)

Power consumption

max. 106 VA

Input voltage - level 1

27.2 VDC ±0.5%

Output current - level 1

max. 2.2 A

Output voltage - level 2

12 VDC ±0.5 %

Output current - level 2

max. 0.3 A

Total continuous power output

max. 60 W

Short-circuit protection of outputs

electronic

Electrical endurance of input/output isolation

3,000 VAC

Operating temperature

from -10 °C up to +60 °C (for loading characteristics see Fig. 1)

Dimensions

150 x 90x 58 mm (6M housing for a DIN rail TS-35)

1) The power supply is capable of operating from 110 VAC mains with power output reduced by 25 %.

 

 

Table. 2 The parameters of terminal block of 230V PS2-60/27 power supply

Spacing of terminals

7.5

The type of terminal

Screw cage

 

Wire stripping length

mm

6

Tightening torque for the terminal screws

0.5 Nm

Conductor sizes

Clamping range, a solid conductor

mm2

0.15 ÷ 2.5

Clamping range, a cable

mm2

0.15 ÷ 1.5

Nominal voltage

V

750

Nominal current

A

16

Material - the connector plastic

PA6.6 UL94V0

The screw of the connector terminal

M3


Fig. 1 The PS2-60/27 power supply loading characteristics

 

 


Fig. 2 Front view of the PS2-60/27 supply, the arrangement of B and D connectors and the C terminal block

 

Notes:

  1. For B and D connectors parameters see Chapter 13.3.1.

  2. For C terminal block parameters see table .2.

  3. B connector contains the output from the 27.2 VDC, max. 2.2 A

  4. D connector contains 12 VDC, 300 mA output level

  5. C terminal block is connected to 230 VAC mains voltage. The supply is a Class I electrical appliance and the terminal C5 must be connected to protective earth (PE).