ABB ACS 400 User Manual page 113

LOW (3202)
HI (3203)
energized=1
de-energized=0
energized=1
de-energized=0
A = Parameter 1401
or
OVER
B = Parameter 1402
UNDER
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-energized.
B = Initially the relay is energized.
Figure 41 Operating data supervision using relay outputs, when
102
RELAY OUTPUT
2 .
SUPRV OVER
RELAY OUTPUT
or 2 .
SUPRV UNDER
http://nicontrols.com
Value of supervised parameter
1 (1402 2) value is
RELAY OUTPUT
1 (1402 2) value is
RELAY OUTPUT
LOW>HIGH.
t
A
B
1
SUPRV
1
SUPRV
ACS 400 User's Manual