ABB Advant Controller 450, Product Manual

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Advant Controller 450 Product Guide
Section 6.8 Trend Data Storage
3BSE 015 953R201 Rev B 6-9
See Table 6-7 for relative time error between events for different configurations. All events
connected to one Advant Controller 450.
6.8 Trend Data Storage
The Trend data storage capacity of Advant Controller 450 is shown in Table 6-8 .
NOTE
The CPU load and the RAM requirements must also be considered.
Table 6-7. Relative time errors between events (DI signals)
Bus
Events generated by
Relative time
error (ms)
Controller Module/Calculated
Advant Fieldbus 100 AC 110/160 DI650 <2
AC 110/160 Calculated in AMPL <2 + Sct
(1)
(1)
Sct means scan cycle time of reading I/O signals in the Advant Controller 55, 70, 110 or 160.
AC 70 Calculated in AMPL <2 + Sct
(1)
RCOM/RCOM+ AC 110/160 DI650 <50
(2)
(2) This value is valid for a fixed RCOM connection where there is a continuous clock synchronization over the
bus (at least once per minute). If dial-up phone lines are used the error is also dependent of the elapsed time
since the previous call (clock synchronization).
AC 110/160 Calculated in AMPL <50 + Sct
(1)(2)
AC 55 Calculated in AMPL <50 + Sct
(1) (2)
Table 6-8. Data logging capabilities
Aspect Limit/Value
Max. No. of logs 15
Max. No. of variables / log 127
Max. No. of storable values
(1)
/ variable
(common to all variables in the log)
(1)Each value requires 5 byte of memory.
32767 (the free amount of RAM
usually sets a lower limit)
Log sampling intervals
(in discrete steps) sec: 1, 2, 3,.. 30
min: 1, 2, 3, .. 30
h: 1, 2, 3, .. 24
week: 1