5.2 b: Application
184
YASKAWA ELECTRIC
SIEP C710636 02B YASKAWA U1000 Technical Manual
• 3-wire sequence:
Setting A1-03 to 3330 initializes the drive and presets terminals S1, S2, and S5 to Start, Stop, and FWD/REV. Refer to
Setting 0: 3-Wire Sequence on page 266
Setting 2: MEMOBUS/Modbus Communications
To issue a Run command via serial communications, set b1-02 to 2 and connect the RS-485/RS-422 serial
communication cable to control terminals R+, R-, S+, and S- on the removable terminal block.
Modbus Communications on page 557
for instructions.
Setting 3: Option Card
To issue the Run command via the communication option board, set b1-02 to 3 and plug a communication option board
into the CN5-A port on the control PCB. Refer to the manual supplied with the option board for instructions on
integrating the drive into the communication system.
Note:
If b1-02 is set to 3, but an option board is not installed in CN5-A, an oPE05 operation error will be displayed on the digital
operator and the drive will not run.
■
b1-03: Stopping Method Selection
Select how the drive stops the motor when the Run command is removed or when a Stop command is entered.
Setting 0: Ramp to stop
When 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.
When the output frequency falls below the level set in parameter b2-01, the drive will start DC injection or Zero Speed
Control depending on the selected control mode.
V/f, V/f w/PG and OLV (A1-02 = 0, 1, 2)
For these control modes, parameter b2-01 sets the starting frequency for DC Injection Braking at stop. Once the output
frequency falls below the setting of b2-01, DC Injection Braking is enabled for the time set in parameter b2-04.
Figure 5.3
Figure 5.3 DC Injection Braking at Stop for V/f, V/f w/PG and OLV
Note:
If b2-01 is set to a smaller value than parameter E1-09 (minimum output frequency), then DC Injection Braking will begin as
soon as the frequency falls to the value set to E1-09.
OLV/PM and AOLV/PM (A1-02 = 5, 6)
When the output frequency falls below the setting of b2-01, drive output is shut down, and DC Injection Braking is
performed for the time set in b2-04.
Figure 5.4
Figure 5.4 Coast to Stop (OLV/PM. AOLV/PM)
Note:
If b2-01 is set to a smaller value than parameter E1-09 (minimum output frequency), then DC Injection Braking will begin as
No.
<1> The setting range is 0, 1, or 3 in CLV, OLV/PM, AOLV/PM, or CLV/PM.
Parameter Name
Setting Range
Default
b1-03
Stopping Method Selection
0 to 3
0
Run command
Deceleration in the time set
Output frequency
ON
OFF
E1-09 Min. Output Frequency
b2-01 DC Injection Braking
Start Frequency
DC Injection Braking
b2-04
Run command
Deceleration in the time set
Output frequency
ON
OFF
E1-09 Min. Output Frequency
b2-01 DC Injection Braking
Start Frequency
Short Circuit Braking
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