Delta VP3000 Series - Page 484

Chapter 8 Troubleshooting｜VP3000
475
ID No.
Warning Name
Descriptions
156
Electronic thermal relay 2
protection (EoL2)
Electronic thermal relay 2 protection.
Action and Reset
Action Condition
Start counting when output current > 100% of motor 2 rated current
Action Time
Pr. H5-20 (if the output current is larger than 100% of motor 2 rated current again
within 60 sec., the counting time reduces and is less than Pr. H5-20 setting value)
Warning Setting Parameter
Pr. H5-21
0: Warning & continue OPER
1: Fault & Ramp to Stop
2: Fault & Auto-Decel
3: Fault & coast to stop
4: Fault & by Quick Stop Time
Reset Method
“Error” occurs when Pr. H5-21 = 1–4. You must reset manually.
Reset Condition
Reset in 5 sec. after the fault is cleared
Record
Records when Pr. H5-21 = 1–4
Cause
Corrective Actions
The load is too large
Reduce the load.
Accel./Decel. time and working
cycle are too short
Increase the setting values for Pr. C2-00–Pr. C2-07 (accel./decel. time)
V/F voltage is too high
Adjust settings for Pr.E0-03–E0-14 (V/F curve). Adjust the setting value for the
mid-point voltage (if the mid-point voltage is set too small, the load capacity
decreases at low speed).
Overload during low-speed
operation
When using a general motor, even
it operates below rated current, an
overload may still occur during
low-speed operation.
Decrease low-speed operation time.
Change to dedicated motor for the drive.
Enlarge the motor capacity.
When using motor drive dedicated
motors, Pr. H5-19 = 2 (IM2 EoL1
Mode = 2 Constant Torque mode)
Pr. H5-19 = 1 (IM2 EoL1 mode = Variable Torque mode).
Incorrect value of electronic
thermal relay
Reset to the correct motor rated current.
The maximum motor frequency is
set too low
Reset to the correct motor rated frequency.
One drive to multiple motors
Set Pr. H5-19 = 0 (IM2 EoL1 mode= disable) and install thermal relay on each
motor.
Check if the setting for stall
prevention is correct
Set the stall prevention to the proper value.