1.7 H: Terminal Functions
156 YASKAWA ELECTRIC SIEP C710606 10A YASKAWA AC Drive - V1000 PRELIM. Programming Manual
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.
Refer to KEB Function on page 194 for details on how to use these input settings.
Setting 7C/7D: Short Circuit Braking (N.O./N.C.) (PM OLV 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.).
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 86 for details.
Setting 7F: Bi-Directional PID Output Selection
If PID output to bi-directional output conversion is enabled in parameter d4-11, a digital
input programmed for 7F can be used to switch between normal output or bi-directional
output.
Description
Digital Inputs
Setting 7A (N.C.) Setting 7B (N.O.)
KEB 2 deceleration Open Closed
Normal operation Closed Open
Description
Digital Inputs
Setting 7C (N.O.) Setting 7D (N.C.)
Normal operation Open Closed
Short-Circuit Braking Closed Open
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