background image

 

 

UF40.241

 

 

UF-Series 

24V,

 

40A,

 

160

MS

,

 

B

UFFER 

M

ODULE

 

 

 

5.

 

S

ELECTION OF THE 

B

ACK

-

UP 

T

HRESHOLD 

V

OLTAGE

 

 

The buffer behavior can be selected with the back-up jumper selector between “Fixed Mode” and “Variable Mode”. 

Fixed Mode:

 (Jumper in position „2-3“ or „22.5V fixed”)

 

If the supply output voltage falls below 22.5V, buffering starts and the supply voltage will be kept at this level. 

This adjustment is recommended: 
- when power supplies other than the DIMENSION Q-series are used 
- with back-feeding loads 
- when the buffer module is placed close to the load or 
- whenever in doubt. 

Variable Mode:

 (Jumper in position „1-2“ or „V

IN

 – 1V”) 

Buffering starts if the supply voltage decreases by more than 1V. Buffering ends when supply voltage increases by 
more than 1V 

Voltage changes slower than 0.54V/s will be ignored if the voltage is above 22.5V. Below 22.5V buffering starts 
immediately. 

This adjustment is recommended for any application where 22.5V is too low for the application or when the buffer 
module is placed close to the power supply. 

 

The factory setting is fixed mode, A missing jumper means also fixed mode. 

 

 

 

6.

 

B

UFFER 

T

IME

 

 

The buffer time (sometimes also called autonomy time) is the maximum period of time for which the capacitor can 
maintain the required output current. The buffer time mainly depends on the output current in buffer mode. 

To increase the buffer time any given number of buffer modules can be connected in parallel. 

Buffer time 

Min. 

160ms

 

At 22.5V, 40A 

 Min. 

320ms

 

At 22.5V, 20A 

 Typ. 

250ms

 

At 22.5V, 40A 

 Typ. 

500ms

 

At 22.5V, 20A 

 Typ. 

62s

 

At 22.5V, 0.1A 

 

 

Fig. 6-1

   Buffer time, typ. 

 

Fig. 6-2

   Buffer time for small buffer currents, 

typ. 

 

Buffer Current, typ.

0

0 0.3

3s

10

30

20

40A

0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.4

Buffer Time

 

 

Buffer Current, typ.

0

3

18s

0.5

1.5

1.0

2.0A

6

9

12

15

Buffer Time

 

Oct. 2016 / Rev. 1.0 DS-UF40.241-EN 
All parameters are specified at 24V, 40A, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. 

www.pulspower.com   Phone +49 89 9278 0    Germany 

6/18

Содержание DIMENSION UF Series

Страница 1: ...g It can be added in parallel to the load circuit at any given point Buffer modules can be connected in parallel to increase the output ampacity or the hold up time SHORT FORM DATA Supply voltage DC 24V 20 25 19 2 30Vdc Required voltage to charge capacitors 23Vdc Threshold voltage for buffer mode 22 5V VIN 1V Selectable Buffer voltage 22 5V VIN 1V Selectable Buffer current 40A Charging time Typ 34...

Страница 2: ...rmission in writing Some parts of this unit are patent by PULS US patent No 091662 063 Des 424 529 TERMINOLOGY AND ABREVIATIONS Power supply mode Describes a condition where the supply voltage is in the rated supply voltage range and the supplying power supply can deliver a sufficient amount of current for the buffer module and the load The mode can also be called Normal mode Buffer mode Describes...

Страница 3: ... any obstructions Signal lines ready active and inhibit must be shorter than 30m Use an appropriately sized power supply which can deliver the additional required internal current consumption including the charging current specified as input current in the table of chapter 4 and Fig 4 1 The following installation clearances must be maintained Left right 0mm On top of the unit 40mm On bottom of the...

Страница 4: ...urrent for a defined period of time Process data can be saved and processes can be terminated before the DC power switches off Controlled restarts are subsequently possible AC DC Buffer Module Easy to handle expandable and maintenance free The buffer module does not require any control wiring It can be added parallel to the load circuit at any given point Buffer modules can be connected in paralle...

Страница 5: ...n 40A Buffer current overload behavior Electronically limited buffering stops and capacitor gets discharged below 17V See Fig 4 2 Allowed voltage between supply voltage and chassis ground Max 60Vdc or 42 4Vac Continuous IEC 62477 1 Capacitive and inductive loads No limitation 1 Supply Voltage Range At voltages within the input voltage range control functions such as LEDs monitoring features relay ...

Страница 6: ...mmended for any application where 22 5V is too low for the application or when the buffer module is placed close to the power supply The factory setting is fixed mode A missing jumper means also fixed mode 6 BUFFER TIME The buffer time sometimes also called autonomy time is the maximum period of time for which the capacitor can maintain the required output current The buffer time mainly depends on...

Страница 7: ...than 2minutes Fig 7 1 Charging time re charging Charge 20 0 5 10 45s Charging Time 40 80 60 100 15 20 25 30 35 40 max min typ 8 OPERATING DIAGRAMS Fig 8 1 Operating diagram Fig 8 2 Signal schematic Ready t Active t Optocoupler high ohmic Optocoupler high ohmic Optocoupler low ohmic Optocoupler low ohmic V Mains t V Buffer Capacitor t Vout t Charging Mode LED t Buffer Mode Hold up Time Power Supply...

Страница 8: ...age current Max 50μA While opto coupler is high ohmic Isolation voltage See chapter 21 11 INHIBIT INPUT Buffering can be disabled or interrupted with the inhibit input pin 9 Therefore pin 6 should be connected to the positive pole of the terminal voltage or to the external control voltage and pin 9 must be connected to the corresponding negative pole Inhibiting the unit also discharges the interna...

Страница 9: ...tional hours and is calculated according to the capacitor s manufacturer specification The manufacturer of the electrolytic capacitors only guarantees a maximum life of up to 15 years 131 400h Any number exceeding this value is a calculated theoretical lifetime which can be used to compare devices MTBF stands for Mean Time Between Failure which is calculated according to statistical device failure...

Страница 10: ... American Wire Gauge Max AWG 22 8 AWG 22 14 Max wire diameter Max 5 2mm including ferrules 2 25mm including ferrules Wire stripping length Typ 12mm 0 5inch 6mm 0 25inch Tightening torque 2 3Nm 20 5lb inch 0 4Nm 3 5lb inch Screwdriver 3 5mm or 5mm slotted or cross head No 2 3mm slotted Instructions a Use appropriate copper cables that are designed for minimum operating temperatures of 60 C for ambi...

Страница 11: ...ls see chapter 11 D Status LED This green LED indicates that the following information OFF Capacitors are discharged or supply voltage is below 22V ON Capacitors are fully charged Slow flashing 1 25Hz Capacitors are getting charged Fast flashing 10Hz Capacitors are getting discharged E Back up Threshold Jumper Option 1 Fixed mode Jumper in position 2 3 The unit switches to buffer mode as soon as t...

Страница 12: ...erions A Buffer module shows normal operation behavior within the defined limits EMC Emission for standby and charging mode According to generic standards EN 61000 6 3 and EN 61000 6 4 Conducted emission supply voltage IEC CISPR 16 1 2 IEC CISPR 16 2 1 Limits for DC power ports acc EN 61000 6 3 fulfilled Radiated emission EN 55011 EN 55022 Class B This device complies with FCC Part 15 rules Operat...

Страница 13: ...sation is present 19 PROTECTION FEATURES Electrical protection Electronically protected against overload no load and short circuits Over voltage protection in buffer mode Typ 32Vdc Max 35Vdc In case of an internal buffer module defect a redundant circuit limits the maximum output voltage Buffering stops and automatically attempts to restart Degree of protection IP 20 EN IEC 60529 Penetration prote...

Страница 14: ...trength A B C Type test 60s 500Vac 500Vac 500Vac 14 18 Factory test 5s 500Vac 500Vac 500Vac Field test 5s 500Vac 500Vac 500Vac Cut off current setting 1mA 1mA 1mA Supply Voltage Chassis Active and Ready Signal Inhibit Input A C B 22 APPROVALS EU Declaration of Conformity The CE mark indicates conformance with the EMC directive CB Scheme Information Technology Equipment IEC 60950 1 2nd Edition Reco...

Страница 15: ...ight 1040g 2 3lb DIN rail Use 35mm DIN rails according to EN 60715 or EN 50022 with a height of 7 5 or 15mm Housing material Body Aluminium alloy Cover Zinc plated steel Installation clearances See chapter 2 Fig 23 1 Front view Fig 23 2 Side view Oct 2016 Rev 1 0 DS UF40 241 EN All parameters are specified at 24V 40A 25 C ambient and after a 5 minutes run in time unless otherwise noted www pulspow...

Страница 16: ...l To mount a unit on a wall or a panel the two zinc plated steel brackets have to be installed on the side of the unit Fig 24 1 Wall mounting Fig 24 2 Mounting Dimensions Wall mounting bracket Oct 2016 Rev 1 0 DS UF40 241 EN All parameters are specified at 24V 40A 25 C ambient and after a 5 minutes run in time unless otherwise noted www pulspower com Phone 49 89 9278 0 Germany 16 18 ...

Страница 17: ...el brackets can be mounted For sideway DIN rail mounting the removed aluminum brackets and the black plastic slider need to be mounted on the steel bracket Fig 24 3 Side mounting without DIN rail brackets Fig 24 4 Side mounting with DIN rail brackets Fig 24 5 Mounting Dimensions Side mounting bracket Oct 2016 Rev 1 0 DS UF40 241 EN All parameters are specified at 24V 40A 25 C ambient and after a 5...

Страница 18: ...N PE Output Input L N PE Inhibit Active Relay lamp or signal Ready Relay lamp or signal External Voltage Source Load UF40 Buffer Module Back up Threshold Status Active Ready Inhibit 9 8 7 6 Power Supply DC 24V L N PE Output Input Fig 25 3 Paralleling of buffer modules Fig 25 4 Decoupling of buffered branches 18 18 L N PE UF40 Buffer Module Back up Threshold Status Active Ready Inhibit 9 8 7 6 UF40...

Отзывы: