WattMaster WCC II - Manual (Page 161)

Section 3: Screen Descriptions
WCC II Operator’s Guide
Operator Interfaces 3-129
Analog Control by:
Specifi es the analog point address that acts as the input signal source
for this control output. This input is forced to be the temperature
sensor wired to the specifi c TUC represented by this screen. A
sensor wired to another TUC or global analog value cannot be used
as the analog input for a TUC.
Schedule Control by: ______
The “Occupied or Unoccupied” control setpoints for the TUC are
selected using the “Schedule Control By:” input on the EA Driver
Screen. When the value of this input is “ON,” the TUC will control
according to the “On Schedule” setpoints. When the value of
this input is “OFF,” the TUC will control according to the “Off
Schedule” setpoints.
--------Setpoints --------
On Schedule: _____ Alternate On: ____
Off Schedule: _____ Off: ____
Local Set: _____
Specifi es a set of analog setpoints (5 total) for the ON and OFF
normal mode schedule, ON and OFF alternate mode schedule, and
Local Set.
The TUC tries to maintain the temperature setpoint entered here by
modulating the SA Actuator or operating the “feed” and “bleed”
solenoid air valves.
The 3 relays on the TUC will be energized based on the difference
between the actual space temperature and this setpoint. The TUC
Set-Up Screen is used to enter the error from setpoint (difference
between actual space temperature and setpoint) which will energize
the 3 TUC relays.
The Local Set setpoint will be used if the ECC/WCC II front end
computer stops communicating with the SAT II-A controller.
TUC - EA DRIVER SCREEN
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Satellite # 4 CONTROL OUTPUT 2 Mode: EA Driver
Description: TUC 4.2 COM to H makes on Decreasing Ctrl Signal
Analog Control by: A2 COM to C makes on Increasing Ctrl Signal
Schedule Control by: W1
------------------Setpoints-----------------
On Schedule: 74.0 Deg F Alternate On: 0.0 Deg F
Off Schedule: 90.0 Deg F Off: 0.0 Deg F
Local Set: 74.0 Deg F Selected by: ....
Dead Band Width +/-: 0.0 Deg F Reverse Action Selc’d when GB5 is ON
Pulse Band Width +/-: 0.0 Deg F
“ “ Off Time: 0 Seconds
“ “ On Time: 0 Seconds
CONTROL ACTION DIAGRAM
<-------COM to H-------> <---------ALL---------> <-------COM to C------->
ON PULSED OFF PULSED ON
Setpoint
+-----Dead Band-----+
+--------------------------Pulse Band---------------------------+
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