Trane FCV - Page 44

ECM Overview and Setup
44 UNT-SVX041D-EN
Table 24. Configuration settings of the motor control board (for reference only)
Description on
Unit Label
User
Interface
Name
Typical User
Interface
Value Description
Mtr 1 High Spd
 
Sets the high-speed rpm for Motor 1. Do not exceed 2300 rpm.
Mtr 1 Med Spd
 
Sets the medium-speed rpm for Motor 1.
Mtr 1 Low Spd
 
Sets the low-speed rpm for Motor 1. Do not set under 600 rpm.
EHStg1 Mtr1 Spd
 
Assigns an rpm to be associated with a call for 1
st
stage electric heat, for Motor 1 (only on units
equipped with electric heat).
, , ,  settings are
locked out on units with electric heat.
EH Stg 2 Mtr 1 Spd
 
Assigns an rpm to be associated with a call for
2
nd
stage electric heat, for Motor 1 (only on
electric heat equipped units).
AI High Spd Mtr 1
 
Sets the maximum rpm for Motor 1 for the
maximum input value of the analog input.
Analog inputs below the  setting will be
rejected.
AI Low Spd Mtr 1
 
Sets the minimum turn-on rpm for Motor 1,
when the analog input becomes active.
Mtr 2 Hgh Spd
 
Sets the high-speed rpm for Motor 2. Blower coils have only one motor.
Mtr 2 Med Spd
 
Sets the medium-speed rpm for Motor 2.
Mtr 2 Low Spd
 
Sets the low-speed rpm for Motor 2.
EHStg1 Mtr2 Spd
 
Assigns an rpm to be associated with a call for 1
st
stage electric heat, for Motor 2 (only on electric
heat equipped units).
If the unit has only one motor, all seven speed
settings for the second motor
(
, , , , ,
,
) should be set to zero.
EH Stg 2 Mtr 2 Spd
 
Assigns an rpm to be associated with a call for
2
nd
stage electric heat, for Motor 2 (only on
electric heat equipped units).
AI High Spd Mtr 2
 
Sets the maximum rpm for Motor 2 for the
maximum input value of the analog input.
AI Low Spd Mtr 2
 
Sets the minimum turn-on rpm for Motor 2,
when the analog input becomes active.
Op Mode Mtr 1
 
Sets the operational mode for Motor 1.
Must be set to
 for blower coil units.
Op Mode Mtr 2
 
Sets the operational mode for Motor 2.
Must be set to  for blower coil units.
Mtr 1 Out Format
 
Sets the interface type for Motor 1.
Must be set to
 for blower coil units.
Mtr 2 Out Format
 
Sets the interface type for Motor 2
Must be set to  for blower coil units.
Mtr 1/2 PWM Freq.
 
Sets the PWM frequency, for cases when the
PWM outputs are used.
On blower coil units, the
 must not be
changed.
Mtr 1 PWM Volt
 
Sets the PWM voltage, for cases when the PWM
outputs are used.
This setting must NOT be changed, as damage to
the motor may occur!
Mtr 2 PWM Volt
 
Sets the PWM voltage, for cases when the PWM
outputs are used.
This setting must NOT be changed, as damage to
the motor may occur!
Mt1 Hgh PWM Lt
 
Sets the maximum output percentage that the
controller will request from Motor 1.
This envelope protection value should not be
altered.
Mt1 Low PWM Lt

.
Sets the minimum maximum output percentage
that the controller will request from Motor 1.
This envelope protection value should not be
altered.
Mt2 Hgh PWM Lt
 
Sets the maximum output percentage that the
controller will request from Motor 2.
This envelope protection value should not be
altered.
Mt2 Low PWM Lt

.
Sets the minimum maximum output percentage
that the controller will request from Motor 2.
This envelope protection value should not be
altered.
Mt1 Ovspd RPM
 
Selects the rpm above which the Motor 1 will be
assumed to be in an overspeed condition and will
need to be shut down.
This envelope protection value should not be
altered.
Mt2 Ovspd RPM
 
Selects the rpm above which the Motor 2 will be
assumed to be in an overspeed condition and will
need to be shut down.
This envelope protection value should not be
altered.