Omron HOME SECURITY SYSTEM - MOTION SENSOR FQM1-MMA21 - Manual (Page 21)

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Data Backup 5
5 Data Backup
The user programs, I/O memories, and other data in the Coordinator Module
and Motion Control Modules is backed up either by a super capacitor or flash
memory, as listed in the following table.
The data backup time of the super capacitor is given in the following table and
shown in the following graph.
Note 1. The times give above assume that the capacitor is completely charged.
Power must be supply to the FQM1 for at least 20 minutes to completely
charge the capacitor.
2. The backup time of the super capacitor is reduced as the capacitor ages.
It is also affected by the ambient temperature. Use portion of the DM Area
backed up by the super capacitor only for data that is to be held during mo-
Module Data Data backup
Coordinator Module Error log RAM with super
capacitor
Motion Control Module DM Area words D30000 to D32767
Error log
Coordinator Module User program
System Setup
DM Area words D30000 to D32767
Flash memory
Motion Control Module User program
System Setup
Temperature Initial After 5 years After 10 years
Ta = 25 °C 101.61 hours
(4.23 days) 96.2 hours
(4.01days) 90.8 hours
(3.78 days)
Ta = 40 °C 26.39 hours
(1.09 days) 15.28 hours 4.16 hours
25 35 45 55 65 75
0
24
48
72
96
120
Ambient temperature ( °C)
Super Capacitor Backup Times
Bac
kup time (h)
25 °C: 96.20 h
25 °C: 101.61 h
40 °C: 26.39 h
Initial value,
40 °C: 4.16 h
25 °C: 90.80 h
40 °C: 15.28 h
After 5 years, After 10 years