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Condition
Freq. Ref.
Source
d4-03
d4-05
d4-01
Operation
Frequency Saved
8
Other (analog
comms, etc.)
0
1
--
• Accelerates (increases the bias) while the Up 2
function is closed,
• Decelerates (decreases the bias) while Down 2
is closed.
• Otherwise operates at the frequency reference
Not saved
9
Value
other
than 0
--
0
• When the Up 2 is enabled, drive accelerates up
to the frequency reference plus d4-03 (increases
the bias for d4-03).
• When Down 2 is enabled, drive decelerates
down to the frequency reference minus d4-03
(decreases the bias for d4-03).
• When during accel/decel the frequency
reference changes for more then d4-07, 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 parameter d4-06. The frequency
reference cannot be overwritten, so
only the bias is saved.
Setting 7A/7B: KEB Ride-Thru 2 (N.C./N.O.)
A digital input programmed for this function can be used to activate the KEB 2 function and detect power supply return.
Description
Digital Inputs
Setting 7A (N.C.)
Setting 7B (N.O.)
KEB 2 deceleration
Open
Closed
Normal operation
Closed
Open
Refer to Kinetic Energy Backup (KEB) Function on page 219
for details on how to use these input settings.
Setting 7C/7D: Short Circuit Braking (N.O./N.C.) (OLV/PM only)
An input programmed for this function can be used to activate Short Circuit Braking in Open Loop Vector Control for PM
motors. By linking all three phases of a PM motor it creates a braking torque in a rotating motor and can be used to stop a
rotating motor or prevent a motor from coasting by external forces (like windmill effect in fan applications etc.).
Description
Digital Inputs
Setting 7C (N.O.)
Setting 7D (N.C.)
Normal operation
Open
Closed
Short-Circuit Braking
Closed
Open
Setting 7E: Forward Reverse Detection (V/f Control with Simple PG Feedback)
When a digital input is programmed for this function, the input determines the direction of the speed feedback signal for V/f
Control with PG feedback. If the input is open, the speed feedback signal is considered to be forward, if the input is closed, it
is considered to be in reverse.
Refer to C5: Automatic Speed Regulator (ASR) on page 154
for details.
Setting 90 to 96: DriveWorksEZ Digital Inputs 1 to 7
These settings are for digital inputs functions used in DriveWorksEZ. Normally there is no need to change or apply these
settings.
Setting 9F: DriveWorksEZ Function Disable
This function is used to enable or disable a DriveWorksEZ program in the drive. An input programmed for this function is
effective only if A1-07 = 2.
Status
Description
Open
DriveWorksEZ enabled
Closed
DriveWorksEZ disabled
5.7 H: Terminal Functions
194
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual