YASKAWA CIMR-ZU A Series Programming Manual page 116

1 8 L Protection Functions
• The RESET key is pushed after the last reset attempt.
The setting of parameter L5-02 determines whether the fault output (MA-MB) will be closed during an auto restart attempt.
The setting of L5-02 can be important when using the drive with other equipment.
The following faults will allow the Auto Restart function to initiate:
• oC (Overcurrent)
• LF (Output Phase Loss)
• PF (Input Phase Loss)
• oL1 (Motor Overload)
• oL3 (Overtorque Detection 1)
• oL2 (Drive Overload)
• ov (Overvoltage)
• GF (Ground Fault)
• Uv1 (Undervoltage)
• oH1 (Heatsink Overheat)
In order for auto restart after a Uv1 fault, Momentary Power Loss Ride-thru must be enabled (L2-01= 1: "Power Loss Ridethru
Time"). Setting H2-01, H2-02 or H2-03 to 1E configures a digital output as "Restart Enabled" to signal if an impending auto
restart is possible.
L Fault eset Inter al ime
Determines the amount of time to wait between restart attempts when parameter L5-05 is set to 1.
No
L5-04
L Fault eset Operation Selection
No
L5-05
Settin Count Success ul estarts
The drive will continuously attempt to restart. If it restarts successfully, the restart counter is increased. This operation is
repeated each time a fault occurs until the counter reaches the value set to L5-01.
Settin 1 Count estart Attempts
The drive will attempt to restart using the time interval set to parameter L5-04. A record is kept of the number of attempts to
restart to the drive, regardless of whether those attempts were successful. When the number of attempted restarts exceeds the
value set to L5-01, the drive stops attempting to restart.
L or ue Detection
The drive provides two independent torque detection functions that trigger an alarm or fault signal when the load is too heavy
(oL), or suddenly drops (UL). These functions are set up using the L6-
below to indicate the underload or overload condition to an external device:
When overtorque occurs in the application, the drive may stop due to overcurrent (oC) or overload (oL1). To prevent the drive from stopping,
Note:
use torque detection to indicate an overload situation to the controller before oC or oL1 occur. Use undertorque detection to discover
application problems like a torn belt, a pump shutting off, or other similar trouble.
2 1 2 2 2
Settin
B
17
18
19
and
Figure 1.68 Figure 1.69
11
Name
Fault Reset Interval Time
Name
Fault Reset Operation Selection
Torque detection 1, N.O. (output closes when overload or underload is detected)
Torque detection 1, N.C. (output opens when overload or underload is detected)
Torque detection 2, N.O. (output closes when overload or underload is detected)
Torque detection 2, N.C. (output opens when overload or underload is detected)
illustrate the functions of overtorque and undertorque detection.
Settin
0.5 to 600.0 s
Settin
0, 1
parameters. Program the digital outputs as shown
Description
an e De ault
10.0 s
an e De ault
1