Delta C2000 Series User Manual page 359

When Pr06-06 or Pr06-09 is set to 2 or 4, the motor drive will have the ot1/ot2 fault after Over
Torque Detection. Then the motor drive stop running until it is manually reset.
Ove r-t orque det ect ion leve l
Current Limit
Settings 0~250% (100%: drive's rated current)
Pr.06-12 sets the maximum output current of the drive. Pr.06-12 and Pr.11-17 ~ Pr.11-20 are used
to set the drive's output current limit. When the drive is in VF, SVC or VFPG control mode, output
frequency will decreases as the output current reaches current limit. It acts as current stall
prevention.
Electronic Thermal Relay Selection (Motor 1)
Electronic Thermal Relay Selection (Motor 2)
Settings 0: Special motor (with external forced cooling)
1: Self-cooled motor (so motor with fan on the shaft)
2: Disable
It is used to prevent self-cooled motor overheats under low speed. User can use electronic thermal
relay to limit driver's output power.
Setting as 0 is suitable for special motor (motor fan using independent power supply). For this kind
of motor, the cooling capacity is not related to motor speed obviously. So the action of electronic
thermal relay will remain stable in low speed, which can ensure the motor's load capability in low
speed.
Setting as 1 is suitable for standard motor (motor fan is fixed on the rotor shaft). For this kind of
motor, the cooling capacity is low in low speed, and the action of electronic thermal relay will
reduce the action time, which ensure the life of motor.
When the power ON/OFF is often switched, even setting as 0 or 1 can bot protect the motor well. It
is because when the power is switched off, the electronic thermal relay protection will be reset. If
there are several motors connected to one motor drive, please install electronic thermal relay in
each motor respectively.
Chapter 12 Description of Parameter Settings C2000 Series
06-07 (06-10)
Out put current
Multi-fu nct ion outpu t
terminal=7 or 8
12-06-6
ON
O ver-torqu e dete ction time
06-08 (06-11)
Manually reset
Factory Setting: 170
Factory Setting: 2