12 Appendix
12.3 Technical data
348 Control Relay easy800 11/11 MN04902001Z-EN www.eaton.com
12.3.4 Central processing unit, real-time clock/timing relay/memory
A double-layer capacitor (super capacitor) is used to back up the supply
voltage for the real-time clock.
The full charge of the double layer capacitor is reached if the easy800 device
is connected to the power supply for 24 hours.
Backup/accuracy of the real-time clock (see figure) only EASY8..-..-.C.“(Clock) and easy800-SWD
Back-up time
Backup time (hours) with fully charged double layer capacitor
Service life (years)
Accuracy of the real-time clock s/day
Normally ± 2 (± 0.2 h ⁄ Year)
The accuracy of the real-time clock can vary, depending on the
average ambient air temperature, up to ± 5 s ⁄ Day (± 0.5 h ⁄ Year).
Repetition accuracy of timing relays
Accuracy of timing relay (from value) %
± 0.02
Resolution
Range “S” ms 5
Range “M:S” s
1
Range “H:M” min
1
Memory
Possible Current paths
256
Possible contacts in series
4
Coil per circuit connection
1
Program memory
1)
KByte
easy800 standard: 8
easy800-SWD: 16
Storage of programs
(Zero-voltage safe,
i.e. retentive)
FRAM
Write/read cycles memory
(minimum)
easy800 standard: 10
12
easy800-SWD: 10
14
Retentive memory
Size Byte:
easy800 standard: 200
easy800-SWD: 400
Hours-run counter Byte:
16
1) for circuit diagram, function blocks and system parameters
a
b
180
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20
0
0246810 2012 1413 5 7 9 1113
55°C
25°C
15 17 1916 18
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