Power Relay "P-Rel" As Limit Value Relay - ProMinent DULCOMETER Assembly And Operating Instructions Manual

Control parameters and functions
'LIMIT' can be used to set
The parameter
a limit for the control variable. If the con‐
trol variable exceeds this limit value, the
CHECKTIME fault is triggered (checkout
time of the control has elapsed). The con‐
trol is switched to basic load and a fault
current output.
8.8 Power relay "P-REL" as limit
value relay
'P-REL' can be config‐
The power relay
ured as a limit value relay. It always act
only on the measurement variable,
whereby the limits are set in
The relay is activated upon infringement
of either the top or lower limit values.
Constant checking is carried out to deter‐
mine whether a limit has been infringed
and if this is interrupted with the power
'P-REL= limit' for at least
relay configured
'DELAY ON' seconds, then the relay is
activated. If the limit value transgression
disappears for at least
onds, then the limit value relay is again
deactivated.
The limit value relay is deactivated imme‐
'STOP' , user calibration,
diately upon:
'PAUSE' and 'HOLD' .
76
'LIMITS' .
'DELAY OFF' sec‐