VFD68 Variable Frequency Drives
47
P. 32
Frequency Jump 1B:
Maximum frequency to skip over to
avoid very low fan airflow and unnecessary motor
overheating. (9999: frequency jump not enabled)
Note:
Ensure that this is set equal to
P.902
(screen a) and
P.904
(screen a).
0–400 Hz, 9999
12.5 Hz
P. 33
Frequency Jump 2A:
To avoid resonance noise caused by
natural frequency of mechanical system, enter frequency just
below
noisy frequency 2.
0 to 400 Hz, 9999
9999
P. 34
Frequency Jump 2B:
To avoid resonance noise caused by
natural frequency of mechanical system, enter frequency just
above
noisy frequency 2.
0 to 400 Hz, 9999
9999
P. 35
Frequency Jump 3A:
To avoid resonance noise caused by
natural frequency of mechanical system, enter frequency just
below
noisy frequency 3.
0 to 400 Hz, 9999
9999
P. 36
Frequency Jump 3B:
To avoid resonance noise caused by
natural frequency of mechanical system, enter frequency just
above
noisy frequency 3.
0 to 400 Hz, 9999
9999
P. 37
Speed Display:
Set the drive to display motor in RPMs
(instead of Hz) by entering the maximum rated motor speed
from the motor nameplate. When set to 0, the drive displays
speed in Hz.
0, 0.01–9998
0
P. 68
Retry Wait Time:
Defines the time delay (in seconds) before
the drive attempts to restart the motor after a fault shutdown.
0.1–600 seconds
10 seconds
P. 72
PWM Frequency Selection:
Allows you to reduce audible
noise by changing the PWM frequency (Hz).
0–15
3
1
P. 73
Analog Input 1 Type:
Defines the input signal voltage range
and motor rotation direction.
• 0:
0–5
VDC
• 1:
0–10
VDC
0, 1
0
P. 77
Parameter Write Select:
Enables or disables writing
(changing) certain parameters and defines when parameters
may be written.
•
0: write when VFD stopped
• 1:
write
disabled
•
2: write enabled anytime
0, 1, 2
2
P.183
Enable Analog Input 2 (AI2) when terminal MRS is connected
to terminal SD
0–8, 16, 18
4
P.902
(screen a)
Analog Input 1:
Minimum speed defined as frequency.
0–60 Hz
12.5 Hz
P.902b
(screen b)
Analog Input 1:
% of input voltage to start minimum speed
ramp
0–100%
38% (1.90 V)
P.903
(screen a)
Analog Input 1:
Maximum speed defined as frequency.
1–400 Hz
60 Hz
P.903
(screen b)
Analog Input 1:
% of input voltage for setpoint (where motor
reaches maximum frequency or speed).
1–100%
54.8% (2.74 V)
P.904
(screen a)
Analog Input 2:
Minimum speed defined as frequency.
0–60 Hz
12.5 Hz
P.904
(screen b)
Analog Input 2:
% of input current to start minimum speed
ramp.
0–100%
38% (7.6 mA)
Table 35: Parameter Descriptions for VFD68Dxx Drives (Part 2 of 3)
Parameter
Indication
on Monitor
Description
Settings
Default
Setting
