Limit Control Operation - Brainchild L91 User Manual

Note 1. The flow charts show a complete listing of parameters. For
actual application the number of available parameters is
dependent on the setup conditions, and should be less than
that shown in the flow charts.
Note 2.
Press
function, and the LOCK indicator will be extinguished.

1-6 Limit Control Operation

HIGH LIMIT OPERATION
If Hi. is selected for OUT1, the unit will perform high limit control.
When power is applied the OUT1 relay is de-energized. After 6.5
seconds self-test period, if the process is below the high limit set
point (HSP1), the output 1 relay will be energized and OP1 indicator
will go off. If the process goes above the high limit set point, the
relay will be de-energized, the OP1 indicator will go on and the
display will show the process value. After the process falls below the
high limit set point and the RESET key is pressed or the remote
reset input is applied, the relay will be energized and the OP1
indicator will go off.
OUT1 Relay
Figure 1-4 High Limit Operation
key for 4 seconds to enable up/down key
RESET
ON
OFF
A
UM0L911C
PV
A, B ,C=Reset is applied
B C
O1.HY= Output1 hysteresis
HSP1
HSP1 O1.HY
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