ABB REM615 ANSI - Page 29

ABB 29
Motor Protection
REM615 ANSI
Product Version 2.0
1MAC251744 -PG Rev. A
Issued: 03.01.2010
Table 52.  ermal overload protection for motors (49M) main settings
Parameter Function Value (Range) Step
Env temperature
mode
49M FLC Only
Use RTD
Set Amb Temp
-
Env temperature set 49M -20.0...70.0 °C 0.1
Alarm thermal value 49M 50.0...100.0 % 0.1
Restart thermal value 49M 20.0...80.0 % 0.1
Overload factor 49M 1.00...1.20 0.01
Weighting factor p 49M 20.0...100.0 0.1
Time constant normal 49M 80...4000 s 1
Time constant start 49M 80...4000 s 1
Operation 49M O
On
-
Table 51.  ree-phase thermal overload protection for motors (49M)
Characteristic Value
Operation accuracy Depending on the frequency of the voltage
measured: fn ±2Hz
Current measurement: ±1.5% of the set value
or ±0.002 x In (at currents in the range of
0.01...4.00 x I
n
)
Operate time accuracy ±2.0% of the theoretical value or ±0.50 s
1) Overload current > 1.2 x Operate level temperature
Table 54. Circuit breaker failure protection (50BF/50NBF) main settings
Parameter Function Value (Range) Step
Current value
(Operating phase current)
50BF/50NBF 0.05...1.00 x I
n
0.05
Current value Res
(Operating residual current)
50BF/50NBF 0.05...1.00 x I
n
0.05
CB failure mode
(Operating mode of function)
50BF/50NBF 1=Current
2=Breaker status
3=Both
CB fail trip mode 50BF/50NBF 1=O
2=Without check
3=Current check
Retrip time 50BF/50NBF 0...60000 ms 10
CB failure delay 50BF/50NBF 0...60000 ms 10
CB fault delay 50BF/50NBF 0...60000 ms 10
Table 53. Circuit breaker failure protection (50BF/50NBF)
Characteristic Value
Pickup Accuracy Depending on the frequency of the current
measured: fn ±2Hz
±1.5% of the set value or ±0.002 x I
n
Trip time accuracy ±1.0% of the set value or ±20 ms