Rockwell-automation 1760-xxxx Pico GFX-70 Controllers User Manual Manual de usuario descargar pdf (Pagina 380)

Publication 1760-UM002B-EN-P - March 2005

A-8 Specifications

Table A.8 Power Supply Specifications for DC Processors

Specification 1760-LDF and 1760-LDFC

Rated voltage

Rated value 24V dc, (+20%, -15%)

Permissible range 20.4V dc to 28.8V dc

Residual ripple ≤ 5%

Input current

For 24V dc, 1760-LDF…, normally 125 mA

For 24V dc, 1760-LDF…, 1760-DU…,

normally

250 mA

For 24V dc, 1760-LDF…, 1760-DU…,

1760-I…, normally

270 mA

Voltage dips, IEC/EN 61131-2

10 ms

Heat dissipation

For 24V dc, 1760-LDF…, normally 3W

For 24V dc, 1760-LDF…, 1760-DU…,

normally

6W

For 24V dc, 1760-LDF…, 1760-DU…,

1760-I…, normally

6.5W

Table A.9 Processor Unit, Real-Time Clock/Timing Relay/Memory

Backup/accuracy of real-time clock (see graph)

Accuracy of the real-time clock

± 5 seconds/day

± 0.5 hour/year

a

b

180

200

160

140

120

100

80

60

40

20

0

0246 810 2012 1413 5 7 9 1113

55˚C

25˚C

15 17 1916 18

1 2 ... 375 376 377 378 379 380 381 382 383 384 385 ... 399 400

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