YASKAWA CIMR-VU BA0001 Technical Manual page 194

5.7 H: Terminal Functions
Freq. Ref.
Condition
Source
8
9
Other (analog
comms, etc.)
10
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
KEB 2 deceleration
Normal operation
Refer to Kinetic Energy Backup (KEB) Function on page 219
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
Normal operation
Short-Circuit Braking
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.
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
Open
Closed
194
d4-03 d4-05 d4-01
0 1 --
0
Value
other --
1
than 0
Refer to C5: Automatic Speed Regulator (ASR) on page 154
Operation
• 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
• 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).
Digital Inputs
Setting 7A (N.C.)
Open
Closed
for details on how to use these input settings.
Digital Inputs
Setting 7C (N.O.)
Open
Closed
Description
DriveWorksEZ enabled
DriveWorksEZ disabled
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
Frequency Saved
Not saved
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.
Setting 7B (N.O.)
Closed
Open
Setting 7D (N.C.)
Closed
Open
for details.