West Control Solutions MRC 5000 Controller Manual - Manual (Page 16)

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3.2 CONTROL OUTPUT SETTINGS
3.2.1 SINGLE OUTPUT
When Single Output On/Off control is configured as CH (Control Heat), the relay will turn OFF when the process value is
greater than the setpoint by one-half the hysteresis value and turn ON when the process value is less than the setpoint by
one-half the hysteresis value.
When Single Output On/Off control is configured as CC (Control Cool), the relay will turn ON when the process value is
greater than the setpoint by one-half the hysteresis value and turn OFF when the process value is less than the setpoint by
one-half the hysteresis value.
3.2.2 DUAL OUTPUT - HEAT/COOL
When Dual Output On/Off control is configured as CH (Control Heat) for Output 1 and CC (Control Cool) for Output 2, Output 1
relay will turn OFF when the process value is greater than the setpoint plus one-half the hysteresis value and turn ON when
the process value is less than the setpoint minus one-half the hysteresis value. Output 2 relay will turn ON when the process
value is greater than the setpoint plus one and one-half the hysteresis value and turn OFF when the process value is less than
the setpoint plus one-half the hysteresis value.
3.2.3 DUAL OUTPUT - HEAT/HEAT
When Dual Output On/Off control is configured as CH (Control Heat) for Output 1 and CH for Output 2, Output 1 relay will turn
OFF when the process value is greater than the setpoint plus one-half the hysteresis and turn ON when the process value is
less than the setpoint minus one-half the hysteresis value. Output 2 relay will turn OFF when the process value is equal to the
setpoint minus one-half the hysteresis and turn ON when the process value is equal to the setpoint minus one and one-half the
hysteresis value.
3.2.4 DUAL OUTPUT - COOL/COOL
When Dual Output On/Off control is configured as CC (Control Cool) for Output 1 and CC for Output 2, Output 1 relay will turn
OFF when the process value is equal to the setpoint minus one-half the hysteresis and turn ON when the process value is
equal to the setpoint plus one-half the hysteresis value. Output 2 relay will turn OFF when the process value is equal to the
setpoint plus one-half the hysteresis value and turn ON when the process value is equal to the setpoint plus one and one-half
the hysteresis value.
3.2.5 TO REVIEW/MODIFY CONTROL SETTINGS
Repeatedly depress the SCROLL key. If any control outputs exist, the OUT LED (OUT 1/1, OUT2/1, etc.) for the first existing
control will flash along with its current control setpoint in the order shown below. Note that CC (for chart changing) will also
appear in the sequence when the SCROLL key is repeatedly depressed.
OUT 1/1 LED flashes Display shows Pen 1/Control setpoint
value
OUT 2/1 LED flashes Display shows Pen 2/Control setpoint
value
If Control Changes are allowed/enabled, use the UP/DOWN keys to change the setting. All control settings are defaulted to 0
and are adjustable from -9999 to 9999 (assuming no decimal positions).
If Control Changes are disabled, the settings cannot be changed, only viewed.