50 ms min.
Run command
OFF (stopped)
Can be either ON or OFF
OFF (forward)
Motor speed
Forward/reverse
command
Stop command
Stop Reverse Stop Foward
TIME
Forward
ON (reverse)
Figure 5.15 3-Wire Sequence
Note:
1. The Run and Stop command must be open/closed for a short moment only to start and stop the drive.
2. If the Run command is active at power up and b1-17 = 0 (Run command at power up not accepted), the Run LED will flash to indicate
that protective functions are operating. If required by the application, set b1-17 to “1” to have the Run command issued automatically
as soon as the drive is powered up.
WARNING! Sudden Movement Hazard. The drive may start unexpectedly in reverse direction after power up if it is wired for 3-Wire sequence
but set up for 2-Wire sequence (default). When using 3-Wire sequence first set the drive properly (H1-
oo
= 0) and then connect the control
wires. Make sure b1-17 is set to “0” (drive does not accept Run command active at power up). When initializing the drive use 3-Wire
initialization. Failure to comply could result in death or serious injury from moving equipment.
Setting 1: LOCAL/REMOTE Selection
This setting allows the input terminal to determine if the drive will run in LOCAL mode or REMOTE mode.
Status Description
Closed LOCAL: Frequency reference and Run command are input from the digital operator.
Open REMOTE: Frequency reference and Run command are input from the selected external reference. (b1–01/b1–02)
Note: 1. If one of the multi-function input terminals is set to for LOCAL/REMOTE, then the LO/RE key on the operator will be disabled.
2. When the drive is set to LOCAL, the LO/RE LED will light.
3. The default setting of the drive is not to allow switching between LOCAL and REMOTE during run. to Refer to b1-07: LOCAL/
REMOTE Run Selection on page 82 if this feature is required by the application.
Setting 2: Serial Communication Reference Selection
This
function can be used to switch the Run command and frequency reference source from the current selection (LOCAL or
b1-01/02) to Serial Communication.
Status Description
Open LOCAL or the source defined by parameters b1-01/02
Closed Run command and frequency reference are set by Serial Communications via MEMOBUS/Modbus
Note: The
default setting of the drive is not to allow switching reference sources during run. Refer to b1-07: LOCAL/REMOTE Run Selection
on page 82 if this feature is required by the application.
Setting 3 to 5: Multi-Step Speed Reference 1 to 3
Used to switch Multi-Step Speed frequency references d1-01 to d1-08 by digital inputs. Refer to d1-01 to d1-08, d1-17:
Frequency Reference 1 to 8 and Jog Reference on page 90 for details.
Setting 6: Jog Frequency Reference Selection
Used to select the Jog frequency set in parameter d1-17 as active frequency reference. Refer to d1-01 to d1-08, d1-17:
Frequency Reference 1 to 8 and Jog Reference on page 90 for details.
Setting 7: Accel/Decel Time Selection 1
Used to switch between accel/decel times 1 and 2. Refer to C1-01 to C1-04: Accel/Decel Times 1 and 2 on page 85 for details.
5.6 H: Terminal Functions
YASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual
99
5
Parameter Details
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