ABB Relion 605 Series - Page 36

Section 4 1MDU07212-YN Rev. D
Protection and Control Function
30 REF601 / REJ601 / REM601
Application Manual
Table 15: Setting range for thermal overload protection 3Ith, 49, continue
Parameter
Description
Range
Unit
Step
Default
ϑ
EM
Percentage by which ϑ
trip
will
be increased in emergency
mode
10… 100
%
1
50
Mode ϑ
powerOFF
Options for calculating thermal
value during power interruption
1…4
-
1
4
*Setting in REF601 and REJ601 hidden (fixed set to static mode)
4.8.2.2 Configurable inputs to thermal overload protection
Table 16: Configurable inputs to thermal overload protection 3Ith, 49
Name
Type
Description
RESET
BOOL
Reset protection
BLOCK
BOOL
Block protection
4.8.2.3 Configurable outputs of thermal overload protection
Table 17: Configurable inputs to thermal overload protection 3Ith, 49
Name
Type
Description
ALARM
BOOL
Alarm
OPERATE
BOOL
Operate
ϑ
REAL
Value of thermal image
4.9 Motor start up supervision / Stalling protection
4.9.1 Functionality
Motor start up supervision function is designed for protection of motors against
excessive starting time and locked rotor conditions during motor starting. The
starting of the motor is supervised by monitoring the magnitude of all the phase
currents. During startup period of the motor, function calculates the integral of the
I
2
t value. If the calculated value exceeds the set value, the operate signal is
activated.
Function also has the provision to accept the speed switch input, which means
protection suitable for motors having permissible stalled time more than starting
time. The function also covers repetitive (cumulative) startup function which
protects motor from too frequent startup attempts, causing overheating of motor.