3 Startup Procedure and Test Run
YASKAWA ELECTRIC
SIEP C710617 19A YASKAWA AC Drive CR700 Technical Manual
173
Multi-Function Digital Output
H2-xx
Setting
Value
Name
Description
21
Brake Release Command
When terminal is ON, it functions as the brake release command.
Description of Operation
The following time chart shows the terminal functions when
b1-01 = 1 [Frequency Reference Selection 1 =
Analog Input]
,
b1-02 = 1 [Run Command Selection 1 = Digital Input]
.
•
Terminals S1, S2 (Forward run command, Reverse run command)
Terminals receive the Forward run command and Reverse run command. The signal combinations work as
shown below.
However, the following operations may be restricted based on the Run command tuning function. Refer to
Adjusting the Run Command on page 180
for details.
Forward Run
Command
Reverse Run
Command
Operation
Ref.
OFF
OFF
Ramps to stop according to the stop sequence.
ON
OFF
The motor rotates in the forward direction.
-
OFF
ON
The motor rotates in the reverse direction.
-
ON
ON
The keypad shows
SE1 [Brake Sequence Fault 1 (SE1)]
, and the motor will
coast to stop.
The Brake release command is switched OFF as soon as the fault occurs, and
the brake closes.
Note:
When
S1-16 [Sequence Fault SE1 Detect Time] = 0.00
, then the keypad
shows
EF [FWD/REV Run Command Input Error]
, and the motor will
ramp to stop. A fault signal is not output at this time.
-
Note:
•
Note the following when the Run command source is set to the keypad.
–
When
b1-02 = 0 [Run Command Selection 1 = Keypad]
, the brake sequence set with
S1-xx parameters
will not function.
–
Make sure that the Run command is not issued from the keypad when connecting the brake signal to the drive. If the Run command is
issued from the keypad, then the brake may slip or drive overload may result because the brake will not be released.
–
If Auto-Tuning is executed after the Brake release command signal is connected to the drive, then the drive will show
Er-09
[Acceleration Error]
or
Er-11 [Motor Speed Error]
, and abandon the Auto-Tuning procedure.
•
Make sure to include an external sequence for the drive in order to release the brake after the Brake release command is switched ON,
and also to close the brake after the Brake release command is switched OFF. Refer to the standard connection diagram in
for information about the connection of the control circuit I/O terminals.