Yaskawa Z1000 AC Drive HVAC - Manual (Page 133)

No. Name Setting Range Default
L5-03 Time to Continue Making Fault Restarts 0.00 to 600.0 s 180.0 s
Run
Fault
Attempts
Voltage
remains high
for a long time,
then reset (1) Drive trips on oC,
resets (2) and tries
again but motor still
shorted, trips again. oC condition
gone, resets (3)
and runs.
Time
L2-03 L2-03 L2-03
L5-03
Count
ov
1 2 3
oC oC
trying each
L5-03 seconds successful successful
try but
failed
Figure 4.26 Automatic Restart Timing Diagram
The auto restart count is reset back to 0 if any of the following occur:
• No further faults for 10 minutes after the last retry.
• The drive power is turned off (the drive must be without power long enough to let control power dissipate).
• 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.
n L6-01: Torque Detection Selection 1
The torque detection function is triggered when the current or torque exceed the levels set to L6-02 for longer than the time
set to L6-03. L6-01 selects the conditions for detection and the operation that follows.
No. Name Setting Range Default
L6-01 Torque Detection Selection 1 0 to 12 0
Setting 0: Disabled
Setting 1: oL3 at Speed Agree (Alarm)
Overtorque detection is active only when the output speed is equal to the frequency reference (i.e., no detection during
acceleration and deceleration). The operation continues after detecting overtorque and triggering an oL3 alarm.
4.7 Basic Drive Setup Adjustments
YASKAWA ELECTRIC TOEP YAIZ1U 03A YASKAWA AC Drive – Z1000 User Manual 133
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Start-Up Programming & Operation