YASKAWA
TOMPYEULA7002A LA700 Series Installation and Operation Instruction
33
*1
During the brake torque check,
Brake Control
(
H2-xx = 50
) is not turned ON because the drive does the Position Lock with the brake
closed.
*2
While the drive is running in brake torque check mode,
brTC [During Brake Torque Check]
flashes on the keypad to show that it is
in operation.
*3
The multi-step speed reference is disabled during the brake torque check.
*4
The speed reference will be 3% of the maximum output speed during the brake torque check.
*5
When the brake torque check completes successfully,
“
brEnd
”
will flash on the keypad. You cannot operate the drive from the keypad
while
“
brEnd
”
is displayed.
■
Inspection Operation
Start in Inspection Mode
The drive does the Inspection Operation when it receives an Up or Down signal while one of these conditions is
true:
•
Parameter
d1-18 = 0 or 3 [Speed Reference Selection Mode = Multi-speed Mode1 (d1-01 to 08) or Multi-speed
Mode2 (d1-02 to 08)]
and the selected speed is higher than
d1-28 [Leveling Speed Detection Level]
, but lower
than
d1-29 [Inspection Speed Detection Level]
.
•
Parameter
d1-18 = 1 or 2 [High speed has priority or Leveling speed has priority]
and a digital input
programmed for
H1-xx = 54 [Inspection Operation]
is enabled.
The inspection start uses the same acceleration characteristics, brake sequence, and contactor sequence as in
normal operation. The carrier frequency is set to 2 kHz during Inspection Operation, but you can use
C6-21
[Carrier Frequency @ Inspection]
to change it.
Stop in Inspection Mode
To stop the drive in Inspection Mode, remove the Up or Down signal or deactivate the Inspection Operation Speed
Reference (conditions listed for Start in Inspection Mode must become untrue).
The inspection stop can use a deceleration ramp, depending on the setting of
C1-15 [Inspection Deceleration
Ramp]
.
•
If
C1-15 = 0 s
, the drive immediately applies the brake, shuts off the drive output, and opens the motor
contactor.
•
If
C1-15 > 0 s
, the drive decelerates to stop, applies the brake, shuts off the drive output, and opens the motor
contactor.
◆
Troubleshooting
If the drive or motor do not operate correctly, look at the drive keypad for fault and alarm information.
•
For drive faults:
–
The keypad shows the fault code.
–
and ALM/ERR on the LED Status Ring illuminate continuously.
–
The drive shuts off output and the fault relay output activates. The motor coasts to stop.
•
For drive alarms:
–
The keypad shows the alarm code.
–
and ALM/ERR on the LED Status Ring flash.
–
Usually, the drive will continue to operate the motor. Some alarms let you select a motor stopping method.
■
Fault Reset
1. Remove the cause of the fault or alarm.
2. While the keypad is showing the fault or alarm code, push
(RESET) or
on the keypad.
This table lists the most frequent faults and alarms with possible causes and solutions.
Refer to the Technical Manual for a full list of faults and alarms.