CC-10
INSTRUMENT MANUAL
Phone:(215) 947-2500 fax:(215) 947-7464 e-mail:[email protected] web site:www.televac.com
CC-10 MANUAL REV D
Page 10 of 40
Y
TELEVA
4.4
Set Point
General Description
– There are 3 set points in this instrument and each set point has hysteresis
characteristics and consists of two set values; upper threshold and lower threshold. In this manual the
upper threshold value of the set point 1 is expressed as SP1H and lower threshold as SP1L. LED
‟s on
the front panel displays the status of each set point. They lit when the pressure reaches at the lower
threshold and at the same time set point relays activate. If the pressure rises again and exceeds upper
threshold the LED
‟s go off and the relays deactivate. The both threshold value of each 3 set point can be
set independently.
Set value of set points
Upper threshold of each set point (SP1H-SP3H) cannot be set below the lower threshold value
(SP1L-SP3L). If it does not meet this condition the upper and the lower threshold become the same
value.
Hysteresis The hysteresis characteristic is installed to prevent chattering of the relays. Therefore, there
are some response differences near the set point.
Pressure
Hysteresis
Setpoint Status
SP1L
(Lower Threshold)
SP1H
(Upper Threshold)
ON
OFF
