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36
R E M 6 1 5 A N S I 5 . 0 F P 1 M OTO R P R OT E C T I O N A N D C O N T R O L
—
Table 52. Phase reversal protection (PREVPTOC)
Characteristic
Operation accuracy
Start time
(1), (2)
I
= 2.0 × set Start Value
Fault
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Suppression of harmonics
1) Negative-sequence current before = 0.0, f
2) Includes the delay of the signal output contact
—
Table 53. Phase reversal protection (PREVPTOC) main settings
Parameter
Start value
Operate delay time
Operation
—
Table 54. Thermal overload protection for motors (MPTTR)
Characteristc
Operation accuracy
Operate time accuracy in definite time mode
1 Overload current > 1.2 × Operate level temperature
—
Table 55. Thermal overload protection for motors (MPTTR) main settings
Parameter
Overload factor
Alarm thermal value
Restart thermal Val
Weighting factor p
Time constant normal
Time constant start
Env temperature mode
Env temperature Set
Operation
—
Table 56. Circuit breaker failure protection (CCBRBRF)
Characteristc
Operation accuracy
Operate time accuracy
Reset time
Retardation time
Value
Depending on the frequency of the measured current: f
±1.5% of the set value or ±0.002 x I
Minimum
23 ms
Typically 40 ms
Typically 0.96
<35 ms
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × f
= 50 Hz, results based on statistical distribution of 1000 measurements
n
Function
PREVPTOC
PREVPTOC
PREVPTOC
(1)
Function
MPTTR
MPTTR
MPTTR
MPTTR
MPTTR
MPTTR
MPTTR
MPTTR
MPTTR
n
Typical
25 ms
, where n = 2, 3, 4, 5,...
n
Value (range)
0.05...1.00 x I
n
100...60000 ms
1 = on
5 = off
Value
Depending on the frequency of the measured current: f
Current measurement: ±1.5% of the set value or ±0.002 × I
in the range of 0.01...4.00 × I
)
n
±2.0% of the theoretical value or ±0.50 s
Value (range)
1.00...1.20
50.0...100.0%
20.0...80.0%
20.0...100.0%
80...4000 s
80...4000 s
1 = FLC Only
2 = Use input
3 = Set Amb Temp
-20.0...70.0°C
1 = on
5 = off
Value
Depending on the frequency of the measured current: f
±1.5% of the set value or ±0.002 × I
±1.0% of the set value or ±20 ms
Typically 40 ms
<20 ms
±2 Hz
n
Maximum
28 ms
Step
0.01
10
—
±2 Hz
n
(at currents
n
Step
0.01
0.1
0.1
0.1
1
1
—
0.1
—
±2 Hz
n
n
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