• 2-Wire sequence:
Two inputs (FWD/Stop-REV/Stop). Initializing the drive by setting A1-01 = 2220, presets the terminals S1 and S2 to
these functions. This is the default setting of the drive.
Refer to Setting 40/41: Forward Run/Reverse Run Command
for 2-Wire Sequence on page 94
.
• 3-Wire sequence:
Inputs S1, S2, S5 (Start-Stop-FWD/REV). Initialize the drive by setting A1-01 = 3330 presets the terminals S1, S2 and
S5 to these functions.
Refer to Setting 0: 3-Wire Sequence on page 90
.
Setting 2: MEMOBUS/Modbus Communications
Using this setting, the Run command can be entered via RS-422/485 serial communications using the MEMOBUS/Modbus
protocol and the optional SI-485/J Interface for MEMOBUS/Modbus communication.
Refer to Peripheral Devices &
Options on page 147
. For details about the MEMOBUS/Modbus protocol,
Refer to MEMOBUS/Modbus
Communications on page 185
.
n
b1-03: Stopping Method Selection
Select how the drive stops the motor when a Stop command is entered or when the Run command is removed.
No.
Parameter Name
Setting Range
Default
b1-03
Stopping Method Selection
0, 1
0
Setting 0: Ramp to Stop
When a Stop command is issued or the Run command is removed, the drive will decelerate the motor to stop. The
deceleration rate is determined by the active deceleration time. The default deceleration time is set to parameter C1-02.
DC Injection braking can be applied at the end of the ramp in order to completely stop high inertia loads.
Refer to b2:
DC Injection Braking on page 76
for details.
Run Command
Decelerates according to the
specified deceleration time
Minimum Output Freq.
(E1-09)
DC Injection
Current (b2-02)
DC Braking Time at Stop (b2-04)
Decel Time
(C1-02, etc.)
Output Frequency
DC Injection Braking
ON
OFF
Figure 5.3 Ramp to Stop
Setting 1: Coast to Stop
When a Stop command is issued or the Run command is removed, the drive will shut off its output and the motor will
coast (uncontrolled deceleration) to stop where the stopping time is determined by the inertia and the friction in the driven
system.
Drive output frequency is shut off
Run
Command
Output
Frequency
Motor rpm
ON
OFF
Figure 5.4 Coast to Stop
Note:
After a stop is initiated, any subsequent Run command that is entered will be ignored for a certain time. Do not attempt to start the motor
again until it has come to a complete stop. To start the motor before it has stopped completely, use DC Injection at start (
Refer to b2-03:
DC Injection Braking Time at Start on page 76
).
5.2 b: Application
74
SIEP C710606 33A OYMC AC Drive – J1000 User Manual
