Sense KFT-2410R User manual

Brand: Sense

Model: KFT-2410R

Type: User manual

The KFT-2410R supply was designed for industrial

installations where operation is continuous and requires

reliable components.

Built with the most modern techniques of switching with high

performance and small footprint supplys, and excellent

stabilization and regulation.

Supply Fixing:

Fixing the supply internally in the

panel must be made using 35mm

rails (DIN-46277).

Follow the procedures below:

1° Place only the supply upper

bracket on the rail . (Fig.03)

2 º Lower the supply until it fully

engages on the rail. (Fig. 04).

3º We recommend installing stops

so that the supply does not slide on

the rail. (Fig 05).

Horizontal mounting:

We recommend mounting in a

horizontal position in order to

ensure improved air circulation and

that the panel is provided with a ventilation system to prevent

overheating of the internal components.

Note: We recommend also leaving a gap of at least 20mm

from one supply to another, in order to improve the cooling.

Electric Installation:

The supply has 9 terminals according to the table below:

Terminal Description

1 and 2

Positive output 24 Vdc

3 and 4

Negative output 24Vdc

5 and 6 Alarm

7 and 9 AC input

Ground

Wire Preparation:

Do the ends of the wires according to the drawing below:

Be careful when removing the protective cover not to make

small cuts in the wires, as this may cause short circuit.

Note: The minimum wire size for an output current of 10A must

be 1mm

Procedures:

Remove the protective cover, insert the terminals and crimp

them. If you want to tin the ends for better grip.

Terminals:

To avoid problems of poor contacts and shorting advise using

pre-insulated terminals crimped on the wires.

AC input:

The KFT-2410R power supply has an automatic selection

circuit for 110 or 220Vac (full range), which prevents damage

to the supply with the improper selection / connection of the

equipment.

Voltage Power Current

110 Vac 187 VA 1,7 A

220 Vac 220 VA 1 A

Note: The values shown in the table above are for the condition

of maximum load (10A) in the supply.

AC Input Protection:

We recommend using the electrical circuit that supplies the

unit by a protection circuit breaker or fuse.

Supply Terminals:

• Loosen the terminal screw using a switch with a diameter of

3 to 3,5mm.

• Insert the wire with the terminal already applied, from the

bottom of the terminal.

• Tighten the terminal screw, and repeat for the other

terminals.

• Verify that actually wires are securely attached by pulling

them lightly.

Output Voltage:

The unit has a stabilized output voltage regardless of the

current drawn.

The direct current output, positive (1 or 2) and negative (3 or

4) terminals of the unit provides 24VDC with capacity for up to

10A.

We recommend its use for automation circuits supply such as:

electronic sensors

PLC input or output cards.

electronic modules

auxiliary relays

Current loops

• Industrial networks Profibus DP and DeviceNet standards

Signalling Led:

The supply has on its front a two-color LED whose function is

described in the table below:

Led Status Function

Green on Normal operation

Green off stand by

Red on Short-circuit or overload

Note: The standby condition (sleep) occurs when the supply is

working in parallel with each other and with lower output

voltage than other supplys, and this condition does not provide

(splits) current to the load.

Rua Tuiuti, 1237 - CEP: 03081-000 - São Paulo

Tel.: 11 2145-0444 - Fax.: 11 2145-0404

vendas@sense.com.br - www.sense.com.br

INSTRUCTIONS MANUAL

Switching Power Supply

KFT-2410R/110-220Vac

Tab. 8

Fig.7

1 2 3 4 5 6

7 8 9

Fig. 1

Pic. 2

Alicate ZA3Alicate ZA3

Pic. 10

Pic. 11

+ +

- -

110 ou

220Vca

F F

N N

4040

Pic. 9

Fig. 3

Fig. 4

Fig. 6

FONTE DE ALIMENTAÇÃOFONTE DE ALIMENTAÇÃO

LEDLED

CORRENTE ALTERNADACORRENTE ALTERNADA

110 ou 220Vca110 ou 220Vca

EMEM

ENTRADAENTRADA

CORRENTE CONTINUACORRENTE CONTINUA

SAÍDASAÍDA

24Vcc24Vcc

ALARMEALARME

Fig. 5

EA3000830- Rev. Bi - 09/15

21 .baT

Pic. 13

Fig. 14

Fig. 15

Fig. 16

Tab. 17

Output Ripple:

It is possible that a small ripple and a small output noise is

noticed and may even audio noise characteristic occur, do not

represent a malfunction to the supply.

Protection Against Short-Circuit:

The protection circuit is the oscillating type of automatic

recovery, ie, when the protection operates the output

de-energizes itself, and the supply back to operate

automatically once the overload is removed.

The short protection circuit acts as a power limiter, where the

output voltage is reduced due to the overload current, as

shown in the chart below:

Restoring After Overload:

If the supply is not supplying energy without , overload, must

proceed:

Remove the overload or decrease font loads.

Disconnect and reconnect the AC power supply.

• If power not restored withdraw all charges deenergizing the

24 Vdc output and reconnect the AC input.

Output Voltage Adjustment:

If the supply is far from its loading center , the output voltage

can be raised slightly by correcting the excessive voltage drop

that may exist at the end of the line. To do so you must check

the maximum allowable voltage for all devices connected to

the line.

The tension adjustment is made via a one pot back on the front

of the fountain below the LED status. The potentiometer allows

you to adjust the output voltage of 22V to 28V. Turn the trimpot

counter-clockwise to decrease tension and counterclockwise

to increase it.

Minimum Load:

So that the supply function properly, it is needed a minimum

load of 1A, otherwise there will be a little instability in the supply

due to narrowing of the PWM pulse, which DOES NOT cause

problems, so it is possible that the supply function without

charge, without risk to the user, but its output voltage

regulation and can not be within the values established by

having the supply indicates a nonexistent failure.

Minimum Load Resistor:

In the figure below minimum load resistor is installed in parallel

with the load so that the total supply current is not less than 1A.

Resistor Calculation:

The load resistor should be calculated with the addition of

current drawn by the load current for minimum, as:

Ic a

= =

1 07

arg , ,

P Ic a x W= - = - = =24 1 24 1 07 24 0 3 72. ( arg ) .( , ) , ,

For I load < 1A.

Redundance:

The supply is redundant type. Two or more supplies may be

connected in parallel. Thus, even if a defect in one supply, the

power supply will not be interrupted.

Alarm:

• The supply has an alarm relay, which is especially suitable

for applications where dual power supplies, to indicate that

one supply is not operating. The contact used to indicate

remotely that one supply stops working.

Conditions that make the alarm contact open:

Lack of AC current at the input.

• defect in the internal circuitry of the energy transformation.

Note: when the supply is in stand-by contact remains closed.

Load Division:

In applications with redundant power supplies, we recommend

that supplies divide the load current, so that if one fails the

other only increase the current supplied without prejudice to

the load.

The division need not be equally distributed by supplies

recommend only adjust the output voltage so that the green

LED output lights up, indicating that the supply is supplying

current.

For the current division is accurate, it is necessary to very

precisely adjust the output voltage to the same voltage supply,

but still can occur due to differences in wiring impedance.

Adjustment Procedure for Redundance:

• Taking as an example the design 22, disconnect the

positive output of each source.

Place a voltmeter accurate to 2 decimal places in the output of

the power and turn the potentiometer clockwise to increase

pressure or counterclockwise to decrease.

• Look adjust the two supplies with the same output voltage.

Adjustment Procedure for Isolated Supplies:

In the case of single supplies acting on the pot by raising or

lowering the output voltage by monitoring the voltage that

effectively reaches the load, compensating for voltage losses

in the cabling.

Incorrect Installation:

Attention! The improper installation or use can influence the

supply functioning, or even permanently damage the unit.

Safety Warnings:

Before working with the supply carefully read the instructions:

Before placing the supply in operation must be ensured:

• The connection of supply and output are consistent with the

connection diagram.

• Wires are securely attached to the terminals.

• That the cables are connected to the output load with

correct polarity.

• That the load does not exceed 10A.

• You have enough for the perfect functioning of the cooling

supply.

• Note that the wires have proper gauge for the current

transmitted.

Attention!

Never open the power while in operation, because the unit

contains components that store energy. Improper handling of

these can cause serious injury to the operator.

Caution!

Even after de-energized, the supply accumulates electricity.

Therefore we do not recommend open supply because very

strong electric shocks to risk death can occur in the handling.

KFT-2410R Care:

Be careful when connecting the terminals as contact wires with

metal housing may cause electric shock-threatening.

Mechanical Dimensions:

Fig. 18

2 4 6 8 10 10,5 11

Pic. 19

Vca

Fonte 1

Fonte 2

Vcc

F 1

F 2

CARGA

Pic. 22

Fig. 20

Pic. 21

Pic. 24

EA3000830- Rev. Bi - 09/15

Fig. 23

Sense KFT-2410R User manual

Brand: Sense

Model: KFT-2410R

Type: User manual

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Sense KFT-2410R User manual

Sense KFT-2410R User manual

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