Technical Data Appendix A Hardware Units
140 3BSE 027 941 R301
Technical Data
Technical data for PM856/PM860 and TP830 is described in Table 31 on page 140.
Table 31. PM856/PM860 and TP830 – Technical data
Item Value
Memory • 2 MB flash PROM (firmware storage).
• 8 MB of SDRAM (5 MB available for application
program and 3 MB used for executable firmware).
Power Dissipation 5W typical
10W typical (incl. full supply to ModuleBus and CEX-bus,
see Appendix B, Power Consumption).
Current Consumption 180 mA typical (300 mA max.)
(excl. supply of ModuleBus and CEX-bus, see Appendix
B, Power Consumption).
Power Input Connector Four pin, screw connector L+, L–, SA and SB.
Power Supply
Requirements
Inputs designated L+ and L– 24 V nominal, variation
between 19.2V DC and 30V DC.
Redundant Power
Supply Status Inputs
Inputs designated SA, SB
• Max input voltage 30V
• Min. input voltage for high level 15V
• Max input voltage for low level 8V
These inputs are status inputs. The threshold levels are
logical "0" or "1" input limits, not power fail limits.
Power Reservoir The processor unit has an internal 5ms power reservoir,
sufficient for the CPU to make a controlled power down.
Protection Rating IP20 according to EN60529, IEC 529.