YASKAWA A1000

5.7 H: Terminal Functions
244 YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
Setting 71: Speed/Torque Control switch
Switches the drive between Torque Control and Speed Control. Torque Control is enabled when the terminal is closed,
and Speed Control is enabled when the terminal is open. Note that parameter d5-01 must be set to 0 when using this
function. Refer to d5: Torque Control on page 206 and Switching Between Torque and
Speed Control on page 209.
Setting 72: Zero Servo
Used to activate the Zero Servo function that can be used to lock the rotor at a certain position. Refer to b9: Zero Servo
on page 181 for details.
Setting 75, 76: Up 2, Down 2 command
The Up 2 and 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. Table 5.39 explains how the Up/Down 2 function
works depending on the frequency
reference source and parameters d4-01, d4-03, and d4-05. Refer to d4: Frequency
Reference Hold and Up/Down 2 Function on page 201 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 2 and Down 2, set appropriate bias limit values to parameters d4-08 and d4-09.
Table 5.39 Up/Down 2 Operations
Setting 77: ASR gain switch
Switches the ASR gain between the values set to C5-01 and C5-03. The gain set to C5-03 is enabled when the terminal is
closed, and C5-01 is enabled when the terminal opens again. See C5-01, C5-03/C5-02, C5-04: ASR Proportional Gain
1, 2 / ASR Integral Time 1, 2 on page 192 for a more detailed description.
Setting 78: External torque reference polarity inversion
Reverses the direction of the torque reference when the terminal closes. Refer to d5: Torque Control on page 206 and
Setting the Torque Reference, Speed Limit, and
Torque Compensation Values on page 207 for details.
Condition Freq. Ref. Source d4-03 d4-05 d4-01 Operation Frequency Saved
1
Multi-Step Speed
Re
ference
0
0
0 • Accelerates (increases the bias) whil
e 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
i
nput or both active.
• Resets the bias when the reference changes.
• Operates with the frequency reference i
n 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) whil
e the Up 2 terminal is closed.
• Decelerates (decreases the bias) while Down 2 is closed.
• Otherwise operates at the frequency ref
erence.
Not saved
4
Multi-Step Speed
Re
ference
Va lu e o the r
than 0
–
0 • When the Up 2 is enabled, drive accelerates up to the frequency
reference plu
s d4-03 (bias is increased for d4-03).
• When Down 2 is enabled, drive decelerates do
wn to the
frequency reference minus d4-03 (bias is decreased for d4-03).
• Holds output frequency (holds the bias) when no Up 2 or Down 2
i
nput or both active.
• Resets the bias when the reference changes.
• Operates with the frequency reference i
n 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) whil
e 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
i
nput or both active.
• If the frequency reference changes for m
ore than 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.
8
Other
(analog co
mm, etc.)
0 1 –
• Accelerates (increases the bias) whil
e the Up 2 terminal is closed.
• Decelerates (decreases the bias) while Down 2 is closed.
• Otherwise operates at the frequency ref
erence
Not saved
9
Va lu e o the r
th
an 0
–
0 • When Up 2 is enabled, drive acce
lerates up to the frequency
reference plus d4-03 (increases the bias for d4-03).
• When Down 2 is enabled, drive decelerates do
wn to the
frequency reference minus d4-03 (decreases the bias for d4-03).
• If the frequency reference changes for m
ore then d4-07 during
accel/decel, bias value is held until the output frequency meets
the reference (speed agree).
Not saved
10 1
If the bias is constant for 5 s, it is saved to
param
eter d4-06. The frequency reference
cannot be overwritten, so only the bias is
saved.