Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual - Manual (Page 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
0 2 4 6 8 10 20 12 14 1 3 5 7 9 11 13
55˚C
25˚C
15 17 19 16 18