Carrier WEATHERMASTER 48/50Z030-105 Operation And Service Manual page 71

ITEM
BP BUILDING PRESS. CONFIGS
BP.CF Building Press. Config
BP.S Building Pressure Sensor
BP.R Bldg. Press. (+/-) Range
BP.SP Building Pressure Setp.
BP.SO BP Setpoint Offset
BP.P1 Power Exhaust On Setp.1
BP.P2 Power Exhaust On Setp.2
B.V.A VFD/ACTUATOR CONFIG
BP.FS VFD/Act. Fire Speed/Pos.
BP.MN VFD/Act. Min.Speed/Pos.
BP.MX VFD Maximum Speed
BP.1M BP 1 Actuator Max Pos.
BP.2M BP 2 Actuator Max Pos.
BP.CL BP Hi Cap VFD Clamp Val.
FAN.T FAN TRACKING CONFIG
FT.CF Fan Track Learn Enable
FT.TM Fan Track Learn Rate
FT.ST Fan Track Initial DCFM
FT.MX Fan Track Max Clamp
FT.AD Fan Track Max Correction
FT.OF Fan Track Internl EEPROM
FT.RM Fan Track Internal RAM
FT.RS Fan Track Reset Internal
SCF.C Supply Air CFM Config
B.PID BLDG.PRESS.PID CONFIGS
BP.TM Bldg.Pres.PID Run Rate
BP.P Bldg.Press. Prop. Gain
BP.I Bldg.Press. Integ. Gain
BP.D Bldg.Press. Deriv. Gain
ACT.C BLDG.PRES. ACTUATOR CFGS
BP.1 BLDG.PRES. ACT.1 CONFIGS
SN.1 BP 1 Serial Number 1
SN.2 BP 1 Serial Number 2
SN.3 BP 1 Serial Number 3
SN.4 BP 1 Serial Number 4
SN.5 BP 1 Serial Number 5
C.A.LM BP1 Cntrl Angle Lo Limit
BP.2 BLDG.PRES. ACT.2 CONFIGS
SN.1 BP 2 Serial Number 1
SN.2 BP 2 Serial Number 2
SN.3 BP 2 Serial Number 3
SN.4 BP 2 Serial Number 4
SN.5 BP 2 Serial Number 5
C.A.LM BP2 Cntrl Angle Lo Limit
*Some configurations are model number dependent.
→ →
Configuration BP BP.CF = 2 (Modulating Power Exhaust)
— Control is accomplished with two LEN communicating
actuators in tandem and one exhaust fan relay. If building
→
pressure (Pressures AIR.P
pressure set point (BP.SP) and the supply fan is on, building
pressure control is initialized. Thereafter, if the supply fan relay
goes off or if the building pressure drops below the BP.SP
minus the building pressure set point offset (BP.SO) for 5
continuous minutes, building pressure control will be stopped.
Any time building pressure control becomes active, the exhaust
fan relay turns on, starting the dual exhaust fan motors. After
the exhaust fan relay turns on, control is performed with a PID
loop where:
Error = BP – BP.SP
K = 1000 * BP.TM / 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
D = K * BP.D * (error – error computed last time through the
PID)
Power exhaust control signal (limited between BP.MN and
(BP.1M/BP.2M) %) = P + I + D
→ →
Configuration BP BP.CF = 3 (VFD Controlling Exhaust
Fan Motors) — The VFD controlling high-capacity power
exhaust consists of an exhaust fan VFD (Outputs
E.VFD) enabled by one power exhaust relay (Outputs
→
P.E.1). If building pressure (Pressures
above the building pressure set point (BP.SP) and the supply fan
is on, then building pressure control is initialized. Thereafter, if
Table 58 — Building Pressure Configuration
EXPANSION
→
BP) rises above the building
→
FANS
→
FANS
→ →
AIR.P BP) rises
RANGE UNITS
0 - 5
Enable/Disable
0.10 - 0.25 "H2O
-0.25 - 0.25 "H2O
0 - 0.5 "H2O
0 - 100 %
0 - 100 %
0 - 100 %
0 - 50 %
50 - 100 %
85 - 100 %
85 - 100 %
5 - 25 %
Yes/No
5-60 min
-20000 - 20000 CFM
0 - 20000 CFM
0 -20000 CFM
-20000 - 20000 CFM
-20000 - 20000 CFM
Yes/No
1 - 2
5 - 120 sec
0 - 5
0 - 2
0 - 5
0 - 255
0 - 255
0 - 255
0 - 255
0 - 255
0-90
0 - 255
0 - 255
0 - 255
0 - 255
0 - 255
0-90
the supply fan relay goes off or if the building pressure drops be-
low the BP.SP minus the building pressure set point offset
(BP.SO) for 5 continuous minutes, building pressure control
will be stopped. The 5-minute timer will continue to re-initialize
while the VFD is commanded to a position > 0%. If the building
pressure falls below the set point, the VFD will slow down auto-
matically. Any time building pressure control becomes active,
the exhaust fan relay turns on which energizes the exhaust fan
VFD. Control is performed with a PID loop where:
Error = BP – BP.SP
K = 1000 * BP.TM/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
D = K * BP.D * (error – error computed last time through the
PID)
VFD control signal (clamped between BP.MN and BP.MX%)
= P + I + D
NOTE: Do not change values of PID set point without
approval from Carrier.
BP.CF = 4 (High-Capacity Exhaust Control) — Control is
accomplished with a VFD and two exhaust fan relays. High-
capacity power exhaust consists of an exhaust fan VFD
→
(Outputs FANS
→
→
relay (Outputs
→
relay (Outputs
fan which is equal in capacity to the VFD running at full speed.
71
CCN POINT
BLDG_CFG 0*
BPSENS Disable*
BP_RANGE 0.25
BPSP 0.05
BPSO 0.05
PES1 25
PES2 75
BLDGPFSO 100
BLDGPMIN 10
BLDGPMAX 100
BP1SETMX 100
BP2SETMX 100
BLDGCLMP 10
DCFM_CFG No
DCFMRATE 15
DCFMSTRT 2000
DCFM_MAX 4000
DCFM_ADJ 1000
DCFM_OFF 0
DCFM_RAM 0
DCFMRSET No
SCFM_CFG 1
BPIDRATE 10
BLDGP_PG 0.5
BLDGP_IG 0.5
BLDGP_DG 0.3
BP_1_SN1 0
BP_1_SN2 0
BP_1_SN3 0
BP_1_SN4 0
BP_1_SN5 0
BP1_CALM 35
BP_2_SN1 0
BP_2_SN2 0
BP_2_SN3 0
BP_2_SN4 0
BP_2_SN5 0
BP2_CALM 35
→
E.VFD) enabled by one power exhaust
→
FANS P.E.1) and a second power exhaust
→
FANS P.E.2) which controls a single speed
DEFAULT