Lennox PRODIGY2.0, Application Manual

Page: 136 / 167

136
Table 63. M3 Control Parameters
Control Parameter
Description Units
Control Value
No Description Units Max. Default Min.
Parameter Short
Description
Screen Name
356 GP A03 SOURCE
General Purpose A03
Source
1 1 3 SOURCE
Source/feedback for the PID
loop.
1 = Analog input 1 on GP3 A03
2 = Analog input 2 on GP3 A03
3 = Analog input 3 on GP3 A03
357 GP A03 CYCL INTRVL
General Purpose A03
Cycle Interval
0 1 180 Sec
Frequency of execution of PID
loop.
358 GP D01 MODE
General Purpose D01
Mode
0 0 127 Input Source
GP3 Digital Out Control Mode
= X + 32*Y + 16*Z
Input Sources X:
0- None.
1- Compressor 1 duty cycle.
(Compressor crankcase heater
function)
• On when outdoor air
temperature is > = P 364
seconds have passed with
compressor 1 off.
• Off when outdoor air
temperature > P 362 + 3°F
(fixed dead-band) or
compressor 1 is turned on.
2 - On when Occupied
3 - On when blower on.
4 - On when heating demand
5 - On when cooling demand
6 - On when heating or cooling
demand
7 - System RH (Use P361)
8 - System IAQ (Use P360)
9 - System OAT (Use P362)
10 - On based on GP3
Temperature Sensor 1 (Use P
362)
11 - On based on GP3
Temperature Sensor 2 (Use P
362)
12 - On based on GP3 AI1
(Use P 359)
13 - On based on GP3 AI2
(Use P 359)
14 - On based on GP3 AO1
(Use P 359)
15 - On based on GP3 AO2
(Use P 359)
Algorithm Y for Input Sources
7-15 (see figure 37 on page 138
for further details).
359 GP D01 SP VOLTS
General Purpose D01
Set Points Volts
0.0 0.0 10.0 Volts
General Purpose D01 Digital
output control mode set point.
360 GP D01 SP PPM
General Purpose D01
Set Point Parts Per
Million
21 996 1996 PPM
General Purpose D01 Digital
output control mode set point.
361 GP D01 SP PERCENT
General Purpose D01
Set Point Percentage
0 0 100 %
General Purpose D01 Digital
output control mode set point.
362 GP DO1 SP DEGREES
General Purpose D01
Set Point Degree
-31 0 132 °F
General Purpose D01 Digital
output control mode set point.
363 GP D01 DB PERCENT
General Purpose D01
Dead Band Percentage
0 0 100 %
General Purpose D01 Digital
output control mode set point.
Example: If this parameter is set
to 10%, then the dead-band in
Fahrenheit would be (DO Tem­
perature Set Point * 10 /100).