PISA11

PISA11-Series

The PISA11 protection module comprises one common limitation and switching element for all four outputs. In a

protection event, all four outputs limit the current or shutdown at the same time.

The following reasons can cause a limitation of the output currents or a shutdown of the output channels:

1)

The output current of one or more output channels was too high.

2)

The sum of the output current of all four output channels was exceeded.

3)

The outputs needed to be shutdown in order to maintain sufficient input voltage.

PISA11.401

PISA11.402

PISA11.403

PISA11.404

(4x1A)

(4x2A)

(4x3A)

(4x4A)

At 2x the rated current

typ.

1s at 2A

1s at 4A

1s at 6A

1s at 8A

At short circuit

typ.

110ms

110ms

10ms

10ms

PISA11.406

PISA11.410

PISA11.203206

PISA11.206212

(4x6A)

(4x10A)

(2x3A, 2x6A)

(2x6A, 2x12A)

At 2x rated current output 1, 2

typ.

1s at 12A

1s at 20A

1s at 6A

1s at 12A

output 3, 4

typ.

1s at 12A

1s at 20A

1s at 12A

1s at 24A

At short circuit

output 1, 2

typ.

8ms

8ms

8ms

8ms

output 3, 4

typ.

8ms

8ms

8ms

8ms

*)

The timer for shutdown starts immediately once the rated current levels are exceeded. All output channels will shutdown, if one channel

is overloaded. See Fig. 6-1 for more values.

A shutdown of the outputs can also happen earlier, e.g. when the PISA module has to protect the supply voltage in case the power

supply can not deliver enough current to support all loads without going into overload.

Fig. 6-1 Shutdown characteristic for 1A, 2A, 3A, 4A, 6A and 10A output channels

Shutdown Time, typ.

Output Channel

100ms

Output Current typ.

10A

6A

4A

3A

2A

1A

12A

0

1s

10s

100s

10ms

2

4

6

8

10

12

14

16

18

20

22

24

26A

1

3

5

7

9

1113

1517

1921

23

25

May 2014 / Rev. 1.7 DS-PISA11 - data sheet -

All parameters are specified at 24Vdc input, 25°C ambient temperature and a 5 minutes run-in time unless otherwise noted.

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