96
Table 75 — Sensor Trim Configuration
Limit Switch Trim (L.SW.T)
This variable is used to adjust the limit switch temperature sen-
sor reading. The sensor reading can be adjusted ±10°F to
match the actual measured temperature.
Air Temperature Leaving Evaporator Trim (CCT.T)
This variable is used to adjust the leaving evaporator tempera-
ture sensor reading. The sensor reading can be adjusted ± 10°F
to match the actual measured temperature.
A1 Discharge Temperature (DTA.1)
This variable is used to adjust the A1 compressor discharge
temperature sensor reading. The sensor reading can be adjusted
±10°F to match the actual measured temperature.
NOTE: Due to the resolution of the control board analog input,
temperature readings less than 50°F will become increasingly in-
accurate as the temperature decreases.
Suction Pressure Circuit A Trim (SP.A.T)
This variable is used to adjust the suction pressure sensor read-
ing for circuit A. The sensor reading can be adjusted ±50 psig
to match the actual measured pressure.
Suction Pressure Circuit B Trim (SP.B.T)
This variable is used to adjust the suction pressure sensor read-
ing for circuit B. The sensor reading can be adjusted ±50 psig
to match the actual measured pressure.
Discharge Pressure Circuit A Trim (DP.A.T)
This variable is used to adjust the discharge pressure sensor
reading for circuit A. The sensor reading can be adjusted
±50 psig to match the actual measured pressure.
Discharge Pressure Circuit B Trim (DP.B.T)
This variable is used to adjust the discharge pressure sensor read-
ing for circuit B. The sensor reading can be adjusted ±50 psig to
match the actual measured pressure.
4 to 20 mA Inputs
There are a number of 4 to 20 mA inputs which may be cali-
brated. These inputs are located in Inputs
4-20. They are:
• SP.M.T — static pressure milliamp trim
• BP.M.T — building pressure milliamp trim
• OA.M.T — outside air cfm milliamp trim
• RA.M.T — return air cfm milliamp trim
• SA.M.T — supply air cfm milliamp trim
Discrete Switch Logic Configuration
The SW.LG submenu is used to configure the normally open/
normally closed settings of switches and inputs. This is used
when field-supplied switches or input devices are used instead
of Carrier devices. The normally open or normally closed set-
ting may be different on a field-supplied device. These points
are used to match the control logic to the field-supplied device.
The defaults for this switch logic section will not normally need
changing. However, if a field-installed switch is used that is differ-
ent from the Carrier switch, these settings may need adjustment.
Settings for switch logic are found at the local displays under
the Configuration
SW.LG submenu. See Table 76.
Filter Status Input — Clean (FTS.L)
The filter status input for clean filters is set for normally open.
If a field-supplied filter status switch is used that is normally
closed for a clean filter, change this variable to closed.
IGC Feedback — Off (IGC.L)
The input for IGC feedback is set for normally open for off. If a
field-supplied IGC feedback switch is used that is normally
closed for feedback off, change this variable to closed.
Remote Switch — Off (RMI.L)
The remote switch is set for normally open when off. If a field-
supplied control switch is used that is normally closed for an
off signal, change this variable to closed.
Enthalpy Input — Low (ENT.L)
The enthalpy input is set for normally closed when low. If a
field-supplied enthalpy switch is used that is normally open
when low, change this variable to open.
Fan Status Switch — Off (SFS.L)
The fan status switch input is set for normally open for off. If a
field-supplied fan status switch is used that is normally closed,
change this variable to closed.
Demand Limit Switch 1 — Off (DL1.L)
The demand limit switch no. 1 input is set for normally open
for off. If a field-supplied demand limit switch is used that is
normally closed, change this variable to closed.
Demand Limit Switch 2 — Off (DL2.L)
The demand limit switch no. 2 input is set for normally open
for off. If a field-supplied demand limit switch is used that is
normally closed, change this variable to closed.
IAQ Discrete Input — Low (IAQ.L)
The IAQ discrete input is set for normally open when low. If a
field-supplied IAQ discrete input is used that is normally
closed, change this variable to closed.
Fire Shutdown — Off (FSD.L)
The fire shutdown input is set for normally open when off. If a
field-supplied fire shutdown input is used that is normally
closed, change this variable to closed.
Pressurization Switch — Off (PRS.L)
The pressurization input is set for normally open when off. If a
field-supplied pressurization input is used that is normally
closed, change this variable to closed.
ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT
TRIM SENSOR TRIM CONFIG.
SAT.T Air Temp Lvg SF Trim –10 to 10 ^F SAT_TRIM 0
RAT.T RAT Trim –10 to 10 ^F RAT_TRIM 0
OAT.T OAT Trim –10 to 10 ^F OAT_TRIM 0
SPT.T SPT Trim –10 to 10 ^F SPT_TRIM 0
L.SW.T Limit Switch Trim –10 to 10 ^F LSW_TRIM 0
CCT.T Air Temp Lvg Evap Trim –10 to 10 ^F CCT_TRIM 0
DTA.1 A1 Discharge Temp Trim –10 to 10 ^F DTA1TRIM 0
SP.A.T Suct.Press.Circ.A Trim –50 to 50 PSIG SPA_TRIM 0
SP.B.T Suct.Press.Circ.B Trim –50 to 50 PSIG SPB_TRIM 0
DP.A.T Dis.Press.Circ.A Trim –50 to 50 PSIG DPA_TRIM 0
DP.B.T Dis.Press.Circ.B Trim –50 to 50 PSIG DPB_TRIM 0
IMPORTANT: Many of the switch inputs to the control can be
configured to operate as normally open or normally closed.
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