ABB ACS 160 User Manual page 94

LOW (3202)
HI (3203)
energised=1
de-energised=0
energised=1
de-energised=0
A = Parameter 1401
SUPRV
B = Parameter 1401
SUPRV
Note! Case LOW>HIGH represents a special hysteresis with two separate
supervision limits. Depending on whether the supervised signal has gone
below value HIGH (3203) or above value LOW (3202), determines which
limit is being used. Initially HIGH is used, until the signal goes above value
LOW. After this the limit used is LOW, until the signal goes back below value
HIGH.
A = Initially the relay is de-energised.
B = Initially the relay is energised.
Figure 20 Operating data supervision using relay outputs, when
84
RELAY OUTPUT
1 or 2
OVER SUPRV OVER
RELAY OUTPUT
1 or 2
UNDER SUPRV UNDER
Value of supervised parameter
1 (1402
RELAY OUTPUT
.
1 (1402
RELAY OUTPUT
.
LOW>HIGH.
t
A
B
2) value is
2) value is
ACS 160 User's Manual