Setting 6A: Drive Enable
A digital input configured as a “Drive enable” (H1-oo = 6A) will prevent the drive from executing a Run command until
the input is closed. When the input is open, the digital operator will display “dnE” to indicate that the drive is disabled.
If a Run command is enabled before the terminal set for “Drive enable” closes, then the drive will not run until the Run
command is cycled (i.e., a new Run command is required). If the input is opened while the drive is running, the drive will stop
according to the stop method set to b1-03.
Refer to b1-03: Stopping Method Selection on page 118 for details.
Setting 73: Low City Press
Indicates that sufficient or insufficient pressure is present on the inlet to the pump. Used mainly for pressure booster situations.
Settings 75 and 76: Up 2/Down 2 Function
The Up/Down 2 function adds a bias to the frequency reference. The input programmed for 75 will increase the bias and the
input programmed for 76 will decrease the bias. Table 5.22 explains how the Up/Down 2 function works depending on the
frequency reference source and parameters d4-01, d5-03, and d4-05.
Note: 1. The Up/Down 2 functions must be set as a pair.
2. When using the Up/Down 2 function, set appropriate bias limit values to parameters d4-08 and d4-09.
Table 5.22 Up/Down 2 Operations
Condition
Freq. Ref.
Source
d4-03 d4-05 d4-01 Operation Frequency Saved
1
Multi-Step Speed
Reference
0
0
0 • Accelerates (increases the bias) while the Up 2
terminal is closed.
• Decelerates (decreases the bias) while Down 2 is
closed.
• Holds output frequency (holds the bias) when no
Up 2 or Down 2 input or both active.
• Resets the bias when the reference changes.
• Operates with the frequency reference in all other
situations.
Not saved
2 1
If the bias and frequency reference
are constant for 5 s, the bias is
added to the active frequency
reference and reset afterwards.
3 1 --
• Accelerates (increases the bias) while the Up 2
terminal is closed.
• Decelerates (decreases the bias) while Down 2 is
closed.
• Otherwise operates at the frequency reference.
Not saved
4
Multi-Step Speed
Reference
Value
other
than 0
--
0 • When the Up 2 is enabled, the drive accelerates to
the frequency reference plus d4-03 (bias is
increased for d4-03).
• When Down 2 is enabled, the drive decelerates to
the frequency reference minus d4-03 (bias is
decreased for d4-03).
• Holds output frequency (holds the bias) when
neither Up/Down 2 inputs are active or both inputs
are active.
• Resets the bias when the reference changes.
• Operates with the frequency reference in all other
situations.
Not saved
5 1
If the bias and frequency reference
are constant for 5 s, the bias is
added to the active frequency
reference and reset afterwards.
6
Other (analog
comm., etc.)
0 0
0 • Accelerates (increases the bias) while the Up 2
terminal is closed.
• Decelerates (decreases the bias) while Down 2 is
closed.
• Holds output frequency (holds the bias) when
neither Up/Down 2 inputs are active or both inputs
are active.
• If the frequency reference changes for more than
the time set to d4-07 during accel/decel, bias value
is held until the output frequency meets the
reference (speed agree).
Not saved
7 1
If the bias is constant for 5 s, it is
saved to parameter d4-06. The
frequency reference cannot be
overwritten, so only the bias is
saved.
5.7 H: Terminal Functions
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
171
5
Parameter Details
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