YASKAWA V1000 Series Technical Manual page 113

Note: Forward operation results when S5 is open; Reverse operation results when S5 is closed.
WARNING! Sudden Movement Hazard. When programmed for 3-wire control, a momentary closure on terminal S1 may cause the drive to start. Ensure start/stop and safety circuits
are wired properly and in the correct state before energizing the drive. Failure to comply could result in death or serious injury from moving equipment.
Note: For a list multi-function input terminal functions, see "B.3.7 H: Terminal Function Selections" on page 339. When a 3-Wire Initialization is performed using parameter A1-03,
the function set to terminal S5 will be automatically reset so that it is assigned the FWD/REV run command.
WARNING! Sudden Movement Hazard. The motor will begin rotating immediately after the power is switched on. Clear all personnel from rotating machinery and electrical
connections prior to switching drive power on. Failure to comply may result in death or serious injury.
Note: The drive is initially set up not to accept a run command at power up (b1-17 = 0). If a run command is issued at power up, the RUN indicator LED will flash quickly. For the
drive to issue the run command, change b1-17 = "1".
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 2CN port on the control
PCB. Consult the manual supplied with the option board for instructions on integrating the drive into the communication system.
Note: If b1-01 is set to 3, but an option board is not installed in 2CN, an OPE05 operator programming error will be displayed on the digital operator and the drive will not run.
4: MEMOBUS/Modbus Communications
To issue a run command via serial communications, set b1-02 to "2" and connect the RS-485/422 serial communication cable to R+, R-, S+, and S- on
the removable terminal block.
b1-03: Stopping Method Selection
n
Select how the drive stops the motor when a stop command is entered or when the run command is removed. There are four ways to stop.
No. Name
Stopping Method
b1-03
Selection
Note: DC Injection Braking cannot be used to stop the motor in PM Open Loop Vector Control.
Detailed Description
0: Ramp to Stop
When the run command is removed, the drive will decelerate the motor to 0 r/min. The rate of deceleration is determined by the active deceleration time.
The default deceleration time is set to parameter C1-02.
When the output frequency has dropped below the DC Injection Start Frequency in b2-01 (default = 0.5 Hz), DC current will be injected in the motor at
a level determined by b2-02 (default = 50%). The DC Injection condition will occur for the time specified by b2-04 (default = 0.0) to establish the end
point of the ramp. DC Injection can be used to ensure the motor is at 0 r/min prior to the drive shutting off.
The deceleration time is calculated using the following formula:
Stop time = output frequency at stop command/max frequency (E1-04) x deceleration time setting (C1-02, C1-04, C1-06, C1-08)
DC Injection
Note: If S-curve characteristics are specified by the drive programming, they will add to the total time to stop. Parameter b2-04 is not available if using PM Open Loop Vector.
Instead, set the Short Circuit Braking time to b2-13.
1: Coast to Stop
When the run command is removed, the drive will shut off its output and the motor will coast (uncontrolled deceleration). The friction of the driven
equipment will eventually overcome any residual inertia of the system and the rotation will stop.
YASKAWA ELECTRIC SIEP C710606 18A YASKAWA AC Drive – V1000 Technical Manual (Preliminary)
Stop switch Run switch
N.C. N.O.
Selects the stopping method when the run command is removed.
0: Ramp to Stop
1: Coast to Stop
2: DC Injection Braking to Stop
3: Coast with Timer (A new run command is ignored if received before the timer expires)
Run
command
ON
Output
frequency
Ramps to stop within the
specified deceleration time
Braking
Figure 5.5 Ramp to Stop
Drive
S1
Run command (runs when closed)
S2
Stop command (stops when open)
S5
FWD/REV command
(multi-function input*)
SC
Sequence input common
Description
OFF
Zero Speed Level (b2-01)
Decel Time
(C1-02, etc.)
DC Injection Current (b2-02)
DC Injection Braking at Stop (b2-04)
5.2 b: Setup
Setting Range
0 to 3
5
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