Trane TR150 Programming Manual page 39

Parameters
NOTICE
Smaller frequency converters have a ramp time of 3
seconds which can make it difficult to set the bypass
speeds. Adjust the ramp times in 3-41 Ramp 1 Ramp Up
Time and 3-42 Ramp 1 Ramp Down Time.
3 3
2. Select [1] Enabled in 4-64 Semi-Auto Bypass Set-up.
3. Press [Hand On] to start the search for frequency
bands causing resonances. The motor ramps up
according to the ramp set.
NOTICE
Terminal 27 Digital Input 5-12 Terminal 27 Digital Input
has coast inverse as default setting. This means that
[Hand On] does not start the motor if there is no 24 V to
terminal 27, so connect terminal 12 to terminal 27.
4. When sweeping through a resonance band, press
[OK] on the LCP when leaving the band. The
actual frequency is stored as the first element in
4-63 Bypass Speed To [Hz] (array). Repeat this for
each resonance band identified at the ramp-up
(maximum three can be adjusted).
5. When maximum speed has been reached, the
motor will automatically begin to ramp-down.
Repeat the above procedure when speed is
leaving the resonance bands during the
deceleration. The actual frequencies registered
when pressing [OK] are stored in 4-61 Bypass
Speed From [Hz].
6. When the motor has ramped down to stop, press
[OK]. The 4-64 Semi-Auto Bypass Set-up automat-
ically resets to Off. The frequency converter stays
in Hand On mode until [Off] or [Auto On] is
pressed.
If the frequencies for a certain resonance band are not
registered in the right order (frequency values stored in
4-63 Bypass Speed To [Hz] are higher than those in
4-61 Bypass Speed From [Hz]) or if they do not have the
same numbers of registrations for the 4-61 Bypass Speed
From [Hz] and 4-63 Bypass Speed To [Hz], all registrations
are canceled and the following message is displayed:
Collected speed areas overlapping or not completely
determined. Press [Cancel] to abort.
4-64 Semi-Auto Bypass Set-up
Option:
[0]
*
[1]
38
TR150 Programming Guide
Function:
Off
Enable
BAS-SVP16A-EN - Rev. 2013-09-05