Lutron Electronics CT-2012 Operation Manual page 14

e. Control hysteresis value setting
1) After finish the " Digital filter value setting ", press
the '" Set Button " ( 3-4, Fig. 1 ) once, the " Display "
will show CtHy ", now the meter is ready for the
" Control Hysteresis value " setting.
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2) Use the "
Button " ( 3-6, Fig. 1 ) to adjust the desiring
" Control Hysteresis value ", press the " Set Button "
( 3-4, Fig. 1 ) to save the setting value.
Remark :
* During adjust the value " , the " SV indicator " ( 3-3, Fig. 1 )
will light.
* The function of " Control Hysteresis value " setting, refer to
following Fig. 3.
* For example :
Control high limit value ( CtHi ) : 500
Control low limit value ( CtLo ) : 100
Control Hysteresis value ( CtHy ) : 5
a. The control relay will On when measuring value up
to 500. The control relay will Off again when
measuring value down to 495.
b. The control relay will On when measuring value
down to 100. The control relay will Off when
measuring value up to 105.
Button " ( 3-5, Fig. 1 ) and the "
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Fig. 3