YASKAWA CIMR-VU BA0001 Technical Manual page 193

If a Run command is closed prior to the Drive Enable input being closed, then the drive will not run until the Run command
is cycled. If the Drive Enable input is opened while the drive is running, the drive will stop using the method set by parameter
b1-03 (Refer to b1-03: Stopping Method Selection on page 124
Setting 75/76: Up/Down 2
The Up/Down 2 function can be used to add a bias to the frequency reference. The input programmed for 75 will increase the
bias and the input programmed for 76 will decrease it.
the frequency reference source and parameters d4-01, d5-03 and d4-05.
Function on page 162 for detailed explanations of these and other Up/Down 2 related parameters.
Note: 1. The Up 2 and Down 2 functions must be set as a pair.
2. When using the Up/Down 2 function, set appropriate bias limit values in parameters d4-08 and d4-09.
Freq. Ref.
Condition d4-03
Source
1
2
Multi-Step
Speed
Reference
3
4
Multi-Step Value
Speed other
5
Reference than 0
6
Other (analog
communicati
7
ons, etc.)
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
Table 5.27 Up/Down 2 Operations
d4-05 d4-01
0 • Accelerates (increases the bias) while the Up 2
function is closed
• Decelerates (decreases the bias) while Down 2
is closed
0 • Holds output frequency (holds the bias) when no
1
Up 2 or Down 2 input or both active.
• Resets the bias when the reference changes
0
• Operates with the frequency reference in all
other situations.
• Accelerates (increases the bias) while the Up 2
function is closed,
1 -- • Decelerates (decreases the bias) while Down 2
is closed.
• Otherwise operates at the frequency reference
0 • When the Up 2 is enabled, drive accelerates up
to the frequency reference plus d4-03 (bias is
increased for d4-03).
• When Down 2 is enabled, drive decelerates
down to the frequency reference minus d4-03
(bias is decreased for d4-03).
--
1
• 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.
0 • Accelerates (increases the bias) while the Up 2
function is closed
• Decelerates (decreases the bias) while Down 2
is closed
• Holds output frequency (holds the bias) when no
0 0
Up 2 or Down 2 input or both active.
1
• When during accel/decel. the frequency
reference changes for more than d4-07, bias
value is held until the output frequency meets
the reference (speed agree).
for details).
Table 5.27 explains how the Up/Down 2 function works depending on
Refer to d4: Frequency Hold and Up/Down 2
Operation
5.7 H: Terminal Functions
Frequency Saved
Not saved
If the bias and frequency reference are
constant for 5 s, the bias is added to
the active frequency reference and
reset afterwards.
Not saved
Not saved
If the bias and frequency reference are
constant for 5 s, the bias is added to
the active frequency reference and
reset afterwards.
Not saved
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
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