Dwyer 2500 User Manual
Page 8
949-1190-1
Page 8
December, 1998
MENU SELECTIONS
PRIMARY MENU
Press INDEX to advance to the next menu item. Press UP ARROW or
DOWN ARROW to change the value in the display. Press ENTER to retain
the value.
SP
Set Point Adjust, Control Point.
SECONDARY MENU
Hold UP ARROW & ENTER. Press INDEX to advance to the next menu
item. Press UP ARROW or DOWN ARROW to change the value in the
display. Press ENTER to retain the value.
ALLo
Alarm Low: The Low Alarm point is usually set below the Set Point.
ALHi
Alarm High: The High Alarm Point is usually set above the Set
Point.
The next two Menu Items are for output codes 1,2,or 3. If your control
has output code 5, skip to the Out Menu Item.
CY
Cycle Rate and output selection: Select OnOF, 1, 2 to 80 seconds
total cycle time.
ONOF
A setting of ONOF allows the control to operate as a
simple on/off mode. This setting forces the control to
turn off at set point, and on at the set point plus the
differential (SP_d). When selected the tunE, Pb, rES,
OFS, rtE, and ArUP selections in the Secondary menu
and the SPOL and SPOH selections in the Secure menu
are suppressed.
1
A setting of 1 is recommended for solid state outputs
(SSR or 5VDC).
2 to 80
Time Proportioning Control is adjustable in 1 sec. steps.
Recommended for mechanical outputs (relays,
solenoids,etc.). For best contact life, a time should be
selected as long as possible without causing the process
to wander.
SP_d
Set Point On-Off Differential. Select 1 to 999°F. This value will be
negative for reverse acting set points, and positive for direct acting