Table of Contents
Advertisement
ITEM
BP
BUILDING PRESS. CONFIG
BP.CF
Building Press. Config
BP.RT
Bldg.Pres.PID Run Rate
BP.P
Bldg. Press. Prop. Gain
BP.I
Bldg.Press.Integ.Gain
BP.D
Bldg.Press.Deriv.Gain
BP.SO
BP Setpoint Offset
BP.MN
BP VFD Minimum Speed
BP.MX
BP VFD Maximum Speed
BP.FS
VFD/Act. Fire Speed/Pos.
BP.MT
Power Exhaust Motors
BP.S
Building Pressure Sensor
BP.R
Bldg Press (+/–) Range
BP.SP
Building Pressure Setp.
BP.P1
Power Exhaust On Setp.1
BP.P2
Power Exhaust On Setp.2
B.CFG
BP ALGORITHM CONFIGS
BP.SL
Modulating PE Alg. Slct.
BP.TM
BP PID Evaluation Time
BP.ZG
BP Threshold Adjustment
BP.HP
High BP Level
BP.LP
Low BP Level
*Some configurations are machine dependent.
BP.MT = 1 (4 motors)
Power Exhaust Stage 0
Power Exhaust Stage 1
Power Exhaust Stage 2
BP.MT = 2 (6 motors)
Power Exhaust Stage 0
Power Exhaust Stage 1
Power Exhaust Stage 2
BP.MT = 1 (4 motors)
Power Exhaust Stage 0
Power Exhaust Stage 1
Power Exhaust Stage 2
Power Exhaust Stage 3
Power Exhaust Stage 4
BP.MT = 2 (6 motors)
Power Exhaust Stage 0
Power Exhaust Stage 1
Power Exhaust Stage 2
Power Exhaust Stage 3
Power Exhaust Stage 4
Power Exhaust Stage 5
Power Exhaust Stage 6
VFD POWER EXHAUST BUILDING PRESSURE CON-
TROL (BP.CF = 3) — A 4 to 20 mA analog output from
Economizer Control Board 1 (ECB-1, AO1) is provided as a
speed reference for a field-installed VFD power exhaust
accessory. If building pressure (Pressures
above the building pressure setpoint (BP.SP) and the supply
fan is on, then building pressure control is initialized. Thereaf-
ter, if the supply fan relay goes off or if the building pressure
drops below the BP.SP minus the building pressure setpoint
offset (BP.SO) for 5 continuous minutes, building pressure
control will be stopped. The 5-minute timer will continue to
Table 66 — Building Pressure Configuration
EXPANSION
0-3
5-120
0-5
0-2
0-5
0.0 - 0.5
0-100
0-100
0-100
1-2
Enable/Dsable
0 - 1.00
-0.25 -> 0.25
0 - 100
0 - 100
1-3
0 - 10
0.1 - 10.0
0 - 1.000
0 - 1.000
Table 67 — Power Exhaust Staging (BP.CF = 1)
Table 68 — Power Exhaust Staging (BP.CF = 2)
AIR.P
BP) rises
RANGE
UNITS
sec
" H2O
%
%
%
" H2O
" H2O
%
%
min
" H2O
" H2O
" H2O
PE.A
PE.B
OFF
OFF
OFF
ON
ON
ON
PE.A
PE.B
OFF
OFF
OFF
OFF
ON
ON
PE.A
PE.B
OFF
OFF
ON
OFF
OFF
ON
ON
ON
ON
ON
PE.A
PE.B
OFF
OFF
ON
OFF
OFF
ON
ON
ON
ON
OFF
OFF
ON
ON
ON
reinitialize if the VFD is still commanded to a speed > 0%. If
the building pressure falls below the setpoint, the VFD will
slow down automatically. Control is performed with a PID
loop where:
Error = BP – BP.SP
K = 1000 * BP.RT/60 (normalize the PID control for run
rate)
P = K * BP.P * (error)
I = K * BP.I * (error) + "I" calculated last time through the
PID
64
CCN POINT
DEFAULT
BLDG_CFG
BPIDRATE
BLDGP_PG
BLDGP_IG
BLDGP_DG
BPSO
BLDGPMIN
BLDGPMAX
BLDGPFSO
PWRM
BPSENS
BP_RANGE
BPSP
PES1
PES2
BPSELECT
BPPERIOD
BPZ_GAIN
BPHPLVL
BPLPLVL
PE.C
OFF
OFF
ON
PE.C
OFF
ON
ON
PE.C
OFF
OFF
OFF
OFF
ON
PE.C
OFF
OFF
OFF
OFF
ON
ON
ON
0*
10
0.5
0.5
0.3
0.05
10
100
100
1*
Dsable*
0.25
0.05
35
75
1
1
1
0.05
0.04
Advertisement
Table of Contents
