Carrier WeatherExpert 50LC 07 Series Installation Instructions Manual page 47

7. Setting References:
a. Press the Menu key to move the ▼ (triangle icon) so
it is positioned over Main Menu. The display shows
the following:
0—** Operation / Display
1—** Load and Motor
b. Press ▼ (Down Arrow) three times, the following
display appears:
2—** Brakes
3—** Reference / Ramps
c. Press OK, the following display appears:
3—0* Reference Limits
3—1* References
d. Press OK again, the following display appears:
3-02 Minimum Reference
0.000
NOTE: If the bottom row displays a number other than 0.000,
press OK and use the ▲ and ▼ (Up and Down Arrow) key to
select 0.000.
e. Press ▼ (Down Arrow) once, the following display
appears:
3-03 Maximum Reference
60.000
NOTE: If the bottom row displays a number other than 60.000,
press OK and use the ▲ and ▼ (Up and Down Arrow) key to
select 60.000.
f. Press the Back key until the following display
appears:
3—0* Reference Limits
3—1* References
g. Press ▼ (Down Arrow) once to move the highlight to
the bottom row and then press OK. The following dis-
play appears:
3-10 Preset Reference
[0]0.00%
h. Press OK once to highlight the number in the bracket.
Press OK again; the highlight moves to the current
percent value.
Use the ▲ and ▼ (Up and Down Arrow) keys and the
table below to enter the required Preset Reference
values.
[0]0.00% Stop
Low Speed (see Table 22, column labeled "Preset
[1]LL.LL%
References 3—10[1]" for the proper % for each unit)
Medium Speed (see Table 22, column labeled "Preset
[2]MM.MM%
References 3—10[2]" for the proper % for each unit)
[3]100% Override (High Speed)
High Speed (100% or close to 100% to achieve the
[4]100%
required CFM at high speed)
[5]0.00% Stop
[6]0.00% Stop
[7]0.00% Stop
8. Setting the Ramp Time:
a. Press the Back key until the following display
appears:
3—0* Reference Limits
3—1* References
b. Press ▼ (Down Arrow) twice, the following display
appears:
3—1* References
3—4* Ramp 1
c. Press OK, the following display appears:
3-41 Ramp 1 Ramp up Time
3.00s
d. Press OK again to highlight the bottom row and use
the ▲ and ▼ (Up and Down Arrow) keys to select
10.00s. Press OK again to set the selected Ramp up
Time.
e. Press ▼ (Down Arrow) once, the following display
appears:
3-42 Ramp 1 Ramp Down Time
3.00s
f. Press OK again to highlight the bottom row and use
the ▲ and ▼ (Up and Down Arrow) keys to select
10.00s. Press OK again to set the selected Ramp
Down Time.
9. Setting Limits:
a. Press the Back key until the following display
appears:
2—** Brakes
3—** Reference / Ramps
b. Press ▼ (Down Arrow) once, the following display
appears:
3—** Reference / Ramps
4—** Limits / Warnings
c. Press OK, the following display appears:
4—1* Motor Limits
4—4* Adj. Warning 2
d. Press OK again, the following display appears:
4-10 Motor Speed Direction
[2] Both Directions
e. Press ▼ (Down Arrow) once, the following display
appears:
4-12 Motor Speed Low Limi...
0.0Hz
f. Press ▼ (Down Arrow) again, the following display
appears:
4-14 Motor Speed High Limi...
65.0Hz
NOTE: Press OK to highlight the Hz value and then use the ▲
and ▼ (Up and Down Arrow) keys to enter the required values.
g. Press ▼ (Down Arrow) once, the following display
appears:
4-18 Current Limit
110%
NOTE: Press OK to highlight the % value and then use the ▲ and
▼ (Up and Down Arrow) keys to enter the required value. See
Table 22 for proper selection of the value for this parameter, then
press OK to set the selected value.
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