Trane LonWorks



TR1 Series VFD Installation And Operation Manual page 37

Parameter Description
CONFIG. MODE
100
102 MOTOR POWER
103 MOTOR VOLTAGE
MOTOR
104
FREQUENCY
105 MOTOR CURRENT
MOTOR NOM.
106
SPEED
MIN. FREQUENCY
201
MAX.
202
FREQUENCY
REFERENCE SITE
203
MIN. REFERENCE
204
205 MAX. REFERENCE
RAMP UP TIME
206
RAMP DOWN
207
TIME
AURORAMPING
208
REF. FUNCTION
210
PRESET REF. 1
211
212 PRESET REF. 2
213 PRESET REF. 3
214 PRESET REF. 4
General Parameter Settings
Setting
OPEN LOOP for GLD, MP580,
AH540 control or CLOSED
LOOP for local PID controls.
As required
As required
As required
As required
As required
6.0 Hz for ventilation fans
18.0 Hz for pumps
20.0 Hz for gearbox-driven
cooling tower fans
60.0 Hz
LINKED TO HAND/AUTO
0 Hz
60 Hz
60 s for fans
10 s for pumps
60 s for fans
10 s for pumps
ENABLE for fans
DISABLE for pumps
EXTERNAL - LON
PRESET others
0 %
0 %
0 %
0 %
Comment
In open loop mode the drive will directly follow a speed
reference signal. If this was set to CLOSED LOOP, the drive's
PID controller would determine the drive's speed based on a set
point and a feedback signal. In Closed Loop mode the
nvoOutputPcnt (most commonly used), nvoOutputHz and
nvoOutputRads do not represent output speed. Instead they
represent the feedback signal whose range is set by parameters
413 and 414.
Motor power is entered in kW.
Generally 60 Hz.
Motor full load nameplate current.
Full load nameplate rpm.
These are the standard default settings. They can, of course, be
adjusted to meet the needs of the applications.
For US applications, it is seldom necessary to adjust this.
In this way, any time you press the AUTO START key on the
drive's control panel you are also following the change to
Remote speed reference if wanting to control through LON.
This is generally set for either 0 Hz or the value of parameter
201, MIN. FREQUENCY. The selection depends on how the
speed reference signal is set up.
Generally 60 Hz, the same as the setting of parameter 202,
MAX. FREQUENCY.
The inertia of the driven system or the need for system
responsiveness may dictate modifying these values.
The inertia of the driven system or the need for system
responsiveness may dictate modifying these values.
This setting is useful for fan applications. It allows the drive to
protect against tripping if regenerated energy from the motor
decelerating becomes too great.
The drive has four internally programmable preset speeds. With
other settings of this parameter, these preset speeds may add or
subtract from the LON speed reference command. This setting
ensures that the drive will either use the external speed
reference (like LON) OR the internal preset speed, but not a
combination of both.
With the setting described above for parameter 210, it really
shouldn't be necessary to set all of these references to 0.
nviControlWord is used to select a preset if required.
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