ABB REG650 - Page 226

Calculation
of final
temperature
I3P
Calculation
of heat
content
Final Temp
> TripTemp
actual heat comtent
Actual Temp >
Alarm1,Alarm2
Temp
Actual Temp
> TripTemp
ALARM1
TRIP
Actual Temp
< Recl
Temp
START
Calculation
of time to
trip
Calculation
of time to
reset of
lockout
TTRIP
TRESLO
Management of
setting
parameters: Tau
Current base used
Binary input:
Forced cooling
On/Off
Tau used
ALARM2
WARNING if time to trip < set value
IEC08000040-2-en.vsd
S
R
LOCKOUT
IEC08000040 V2 EN
Figure 107: Functional overview of TRPTTR
Section 8 1MRK 502 048-UEN A
Current protection
220
Technical manual