User Manual of EM760 High-Performance Inverter Motor temperature protection is not in place by default. If you wish to enable it, please make sure current motor comes with a temperature sensor and temperature signals are input from 4 ways of analog voltage signals (requiring our IO card EM760-IO-A1), and then specify the type of the temperature sensor (F07.03) to provide overheat protection for the motor. The user can check current motor temperature via function code F18.38. If the temperature is higher than the alarm threshold of motor overheating (F07.05), the function of the digital output terminal “25:
motor overheating alarm” becomes effective, and the signals can be used for indication. If the temperature is higher than the threshold of motor overheating protection (F07.04), the inverter will report the overheating fault ( E2 ) and take corresponding protective actions. * : The motor overheat fault ( E2 ) cannot be reset immediately. You must wait until the motor temperature drops to be far below the protection threshold. Voltage and current control IfF07.26 is set as 0, overspeed protection is invalid.
IfF07.26 is set as any values other than 0, the inverter will report the motor overspeed protection fault ( E25 ) when the load speed exceeds motor overspeed detection level (F07.25) and remains that way for the time of motor overspeed detection (F07.26). Motor overspeed detection will be performed only when the driving control mode is FVC (F00.01=2) and current state is running or JOG running. 6.10.3 Voltage and current settings 193 Function code Function codename Parameter description Unit Default setting Attribute F07.03 Motor temperature sensor type 0: No temperature sensor 1: PT100 2: PT1000 3: KTY84-130/150 4:
PTC-130/150 0 ● F07.04 Motor overheat protection threshold 0~200 ℃ 110 ● F07.05 Motor overheat pre-alarm threshold 0~200 ℃ 90 ● Function code Function codename Parameter description Unit Default setting Attribute F07.25 Motor overspeed detection level 0.0-50.0 (reference: maximum frequency F00.16) % 20.0 ● F07.26 Motor overspeed detection time 0.0-60.0, 0.0: disable motor overspeed protection s 1.0 ● Function code Function codename Parameter description Unit Default setting Attribute F07.06 Bus voltage control options Ones place: Instantaneous stop/no- stop function options 0: Invalid 1: deceleration 2: deceleration to stop Tens place: Overvoltage stall function options 10 O