Table 139. Loss of load supervision (LOFLPTUC) main settings
Parameter
Function
Value (Range)
Step
Start value low
LOFLPTUC
0.01...0.50 × I
n
0.01
Start value high
LOFLPTUC
0.01...1.00 × I
n
0.01
Operate delay time
LOFLPTUC
400...600000 ms
10
Operation
LOFLPTUC
1 = on
5 = off
-
Table 140. Motor load jam protection (JAMPTOC)
Characteristic
Value
Operation accuracy
Depending on the frequency of the measured current: f
n
±2 Hz
±1.5% of the set value or ±0.002 × I
n
Reset time
Typically 40 ms
Reset ratio
Typically 0.96
Retardation time
<35 ms
Operate time accuracy in definite time mode
±1.0% of the set value or ±20 ms
Table 141. Motor load jam protection (JAMPTOC) main settings
Parameter
Function
Value (Range)
Step
Operation
JAMPTOC
1 = on
5 = off
-
Start value
JAMPTOC
0.10...10.00 × I
n
0.01
Operate delay time
JAMPTOC
100...120000 ms
10
Table 142. Motor start-up supervision (STTPMSU)
Characteristic
Value
Operation accuracy
Depending on the frequency of the measured current: f
n
±2 Hz
±1.5% of the set value or ±0.002 × I
n
Start time
1)2)
Minimum
Typical
Maximum
I
Fault
= 1.1 × set
Start detection A
27 ms
30 ms
34 ms
Operate time accuracy
±1.0% of the set value or ±20 ms
Reset ratio
Typically 0.90
1)
Current before = 0.0 × I
n
, f
n
= 50 Hz, overcurrent in one phase, results based on statistical distribution of 1000 measurements
2)
Includes the delay of the signal output contact
1MRS759144 A
REX640
Product version: 1
ABB
73
Summary of Contents for RELION REX640
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