T775L SERIES 2000 ELECTRONIC STAND-ALONE STAGING CONTROLLER
62-0257—11 30
Fig. 73. Program - Setpoint Offset.
3.5.1. SETPOINT OFFSET
This value is the number of degrees plus (+) or minus (-)
that you want the additional relay to be offset from the
setpoint curve created for Loop 1. For example, If you
want the temperature to be 10°F less than the Loop 1
setpoint, enter -10°F.
1. From the menu, use the and buttons to high-
light OFFSET.
2. Press the button to display the value.
3. Use the and buttons to increase/decrease the
desired setpoint temperature.
OFFSET Default: 0°F
OFFSET Range: -150°F to 150°F (-101°C to 66°C)
4. Press the button to accept the stepping and dis-
play the next option.
Fig. 74. Program - Differential.
3.5.2. DIFFERENTIAL
Differential is used for the additional Relay outputs.
1. From the menu, use the and buttons to high-
light DIFFRNTL.
2. Press the button to display the differential value.
3. Use the and buttons to increase/decrease the
desired value.
Default: 20°F (-6.6°C)
Range: 1°F to 300°F (1°C to 149°C)
4. Press the button to accept the value and display
the next option.
In heating mode, the Differential is below the setpoint.
The relay de-energizes when the temperature rises to the
setpoint. As the temperature drops to the setpoint minus
the Differential, the relay energizes.
In cooling mode, the Differential is above the setpoint.
The relay de-energizes when the temperature falls to the
setpoint. As the temperature rises to the setpoint plus the
Differential, the relay energizes.
Fig. 75. Program - Sensor.
3.5.3. SENSOR
1. From the menu, use the and buttons to high-
light SENSOR.
2. Press the button to display the sensor selections.
3. Use the and buttons to select Sensor A or B.
4. Press the button to accept the highlighted sensor
and display the next option.
PROGRAM
RELAY 9
OFFSET
MENU
PROGRAM
RELAY 9
OFFSET
-10
F
o
ENTER
OFFSET
FOR
RELAY 9
M24415
PROGRAM
RELAY 9
DIFFRNTL
MENU
PROGRAM
RELAY 9
DIFFRNTL
20
F
o
ENTER
DIFFERENTIAL
FOR
RELAY 9
M24416
MENU
PROGRAM
RELAY 9
SENSOR
SELECT
SENSOR
FOR
RELAY 9
SENSOR A
SENSOR B
PROGRAM
RELAY 9
SENSOR
M24417
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