Bodine PACESETTER 2999, Инструкция по установке и эксплуатации, Страница: 23 / 28

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13 TRIMPOT ADJUSTMENTS
The drive contains trimpots which are factory set for most applications. See Figure 2 on page 9 for
the location of the trimpots and their approximate factory calibrated positions. Some applications
may require readjustment of the trimpots in order to tailor the drive for a specific requirement.
The trimpots may be readjusted as described below.
WARNING! If possible, do not adjust trimpots with the main power applied. If
adjustments are made with the main power applied, an insulated adjustment tool
must be used and safety glasses must be worn. High voltage exists in this drive. Fire and/or
electrocution can result if caution is not exercised. The Safety Warning on page 5 must be read
and understood before proceeding.
13.1 Minimum Speed (MIN) – Sets the minimum speed of the motor. The MIN Trimpot is factory
set to 0% of frequency setting. For a higher minimum speed setting, rotate the MIN Trimpot
clockwise. See Figure 29.
13.2 Maximum Speed (MAX) – Sets the maximum speed of the motor. The MAX Trimpot is
factory set to 100% of frequency setting. For a lower maximum speed setting, rotate the
MAX Trimpot counterclockwise. For a higher maximum speed setting, rotate the MAX
Trimpot clockwise. See Figure 30.
13.3 Acceleration (ACCEL) – Sets the amount of time for the motor to accelerate from zero speed
to full speed. The ACCEL Trimpot is factory set to 1.5 seconds. For a longer acceleration
time, rotate the ACCEL Trimpot clockwise. For more rapid acceleration, rotate the ACCEL
Trimpot counterclockwise. See Figure 31.
Note: Rapid acceleration settings may cause the current limit circuit to activate, which will
extend the acceleration time.
13.4 Deceleration (DECEL) – Sets the amount of time for the motor to decelerate from full speed
to zero speed. The DECEL Trimpot is factory set to 1.5 seconds. For longer deceleration time,
rotate the DECEL Trimpot clockwise. For more rapid deceleration, rotate the DECEL Trimpot
counterclockwise. See Figure 32.
Application Note – On applications with high inertial loads, the deceleration may
automatically increase in time. This will slow down the decrease speed to prevent the
bus voltage from rising to the Overvoltage Trip point. This function is called Regeneration
Protection. It is recommended that for very high inertial loads that both the ACCEL and
DECEL Trimpots be set to greater than 10 seconds.
(Shown Factory Set to 0% Frequency Setting)
0
MIN
40
15 35
30
Figure 29 – Minimum Speed
Trimpot Range
(Shown Factory Set to 100% Frequency Setting)
70
MAX
110
75 90
100
80
Figure 30 – Maximum
Speed Trimpot Range
0.3
(Shown Factory Set to 1.5 Seconds)
ACCEL
20
3
1.5
17
10
Figure 31 – Acceleration
Trimpot Range
0.3
(Shown Factory Set to 1.5 Seconds)
DECEL
20
3
1.5
17
10
Figure 32 – Deceleration
Trimpot Range
(Shown Factory Set to 49 Volts for 1.2 Seconds)
57, 1.0
DECEL
23, 3.0
43, 1.5
49, 1.2
31, 2.5
40, 2.0
Figure 33 – DC Injection
Brake Trimpot Range