Drive Enable/Disable; Bypass Drive Enable; Stopping Acceleration And Deceleration (Acceleration/Deceleration Ramp Hold) - YASKAWA Varispeed E7 Instruction Manual And Parameter Description

Drive Enable/Disable

If a digital input is programmed for this function (H1-
switching the digital input ON/OFF (ON – Drive enabled).
If the input is switched OFF while a RUN command is active the inverter will stop using the stopping method
set in b1-03.
The rive Enable/Disable signal has to be ON before the RUN command is activated.

Bypass Drive Enable

If Bypass Drive Enable (70) is programmed into one of the parameters H1-01 to H1-05 the drive will not exe-
cute a RUN command until this input is closed.
Unlike the setting 6A (Drive Enable/Disable) the RUN command does not to be cycled after closing the input.
The drive will start whenever the digital input is closed a RUN command is active with the activated accelera-
tion time.
If a RUN command is active and the Bypass Drive Enable input is OFF the digital operator shows the alarm
message "dnE".
Stopping Acceleration and Deceleration
(Acceleration/Deceleration Ramp Hold)
When a multi-function digital input is set for Accel./Decel. Ramp Hold (H1-
•
used to pause the acceleration or deceleration and maintain (holds) the output frequency.
Acceleration/deceleration is restarted when the acceleration/deceleration ramp hold input is turned OFF.
•
The motor will be stopped if a stop command is input while the acceleration/deceleration ramp hold input
•
is ON.
When constant d4-01 (the frequency reference hold function selecton) is set to 1, the held frequency will
•
be stored in memory. This stored frequency will be retained as frequency reference even after a power loss
and the motor will be restarted at this frequency when a run command is input again.
Related Constants
Con-
stant Name
Number
Frequency reference hold function
d4-01
selection
Set
Value
A* Accel./Decel. Ramp Hold
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= 6A) the drive can be enabled or disabled by
Description
Sets whether or not frequencies will be recorded on hold
command.
0: Disabled (when operation is stopped or the power is
turned ON again the frequency reference is set to 0.)
1: Enabled (when operation is stopped or the power is
turned ON again the inverter starts at the previous hold
frequency.)
This function is available when the multi-function inputs
"Accel/Decel Ramp Hold" or "Up/Down" commands are
set.
Function
Input Terminal Functions
*
=A ), the input can be
Change
Setting Factory during Access
Range Setting Opera- Level
tion
0 or 1 0 No A
53
6-