Installation and Maintenance Manual

ECM Overview and Setup
70 UNT-SVX07D-EN
Table 18. Configuration settings of the ECM engine board
Description on
Unit Label
User
Interface
Name
Typical
User
Interface
Value Description
Notes:
These notes are provided for reference
only, and the ECM engine label must be
used as the ultimate guide for setting up an
engine board on specific units.
Mtr 1 High Spd
 
Sets the high-speed rpm for Motor 1. Do not exceed 1700 rpm.
Do not set under 450 rpm.
On units with two motors, the single shafted
motor is designated as Motor 1.
If the unit has only one motor, all seven speed
settings for the second motor (
, ,
, , , , )
should be set to zero.
Analog inputs below the
 setting will be
rejected.
Note:
, , ,  settings
are locked out on units with electric heat.
Mtr 1 Med Spd
 
Sets the medium-speed rpm for Motor 1.
Mtr 1 Low Spd
 
Sets the low-speed rpm for Motor 1.
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).
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.
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.
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).
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 fan-coil products.
Op Mode Mtr 2
 
Sets the operational mode for Motor 2. Must be set to  for fan-coil products.
Mtr 1 Out Format
 
Sets the interface type for Motor 1. Must be set to  for fan-coil products.
Mtr 2 Out Format
 
Sets the interface type for Motor 2 Must be set to  for fan coil products.
Mtr 1/2 PWM Freq.
 
Sets the PWM frequency, for cases when
the PWM outputs are used.
On fan-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 % 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 %
that the controller will request from
Motor 1.
This envelope protection value should not be
altered.
Mt2 Hgh PWM Lt
 
Sets the maximum output % 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 %
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.
UNT-SVX07_-EN.book Page 70 Friday, April 27, 2012 9:40 AM