Mitsubishi Electric FR-E800 Instruction Manual page 551

• When the regenerative brake transistor is damaged, install a thermal relay to prevent overheat and burnout of the brake
resistor. (Refer to the Instruction Manual (Connection) to install a thermal relay.) Properly select a thermal relay according
to the regenerative driving frequency or the rated power or resistance of the brake resistor.
CAUTION
• If the resistor selection is incorrect, overcurrent may damage the inverter built-in brake transistor. Besides, the resistor
may be burned due to overheat.
• If the selection of the thermal relay is incorrect, the resistor may be burned due to overheat.
 Selection between resetting or not resetting during power supply to main
circuit (Pr.30 = "100 to 102") (standard model, Ethernet model)
• When Pr.30 = "100" or higher value and the FR-E8DS is installed, the inverter will not be reset when power is supplied to
the main circuit (via terminals R/L1, S/L2, and T/L3) while 24 V power is supplied to the inverter.
• When the RS-485 communication or Ethernet communication is used, communication interruption due to the inverter reset
can be avoided.
NOTE
• When supplying power to the main circuit is started while the protective function of the inverter is activated, inverter reset is
performed at power-ON even when "no reset" is selected.
• When the emergency drive function is enabled and "no reset" is selected, the inverter may start immediately after supplying
power to the main circuit.
• When "no reset" is selected, STW1 for PROFINET or the controlword for EtherCAT is retained. Check status transition
commands before supplying power to the main circuit. (Refer to the Instruction Manual (Communication).)
• For the safety communication model and the IP67 model, the setting is fixed to "reset".
Parameters referred to
Pr.57 Restart coasting timepage
Pr.178 to Pr.189 (Input terminal function
Pr.190 to Pr.197 (Output terminal function
550
16. (G) Control Parameters
16.8 Regenerative brake selection
502, page 508
selection)page 410
selection)page 371