1 2 3 4 5 *1 Power consumption differs according to the voltage protection level. The voltage protection level is set in Pr.977 . (Refer to page 351 .) 6 Set parameters as follows: Pr.30 Regenerative function selection = "1 or 101" Set Pr.70 Special regenerative brake duty according to the amount and frequency of the regenerative driving, and make 7 When the regenerative brake transistor is damaged, install a thermal relay as shown in the following sequence to prevent sure that the resistor can consume the regenerative power properly. (Refer to page 743 .) overheat and burnout of the brake resistor.
Properly select a thermal relay according to the regenerative driving frequency or the rated power or resistance of the brake resistor. 8 Thermal relay Thermal relay Power Supply Power Supply 9 ) 10 MC *1 Since the FR-A820-00630(11K) or higher and FR-A840-00310(11K) or higher are not provided with terminal PX, a jumper need not to be removed. 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. 101 2.
INSTALLATION AND WIRING 2.10 Connection of stand-alone option units Voltage class Inverter Minimum resistance (Ω) Power consumption (kW)*1 Pr.977 = "0" Pr.977 = "1" 400 V class FR-A840-00023(0.4K) 371 1.56 1.66 FR-A840-00038(0.75K) 236 2.45 2.61 FR-A840-00052(1.5K) 190 3.04 3.24 FR-A840-00083(2.2K) 130 4.44 4.74 FR-A840-00126(3.7K) 83 6.96 7.42 FR-A840-00170(5.5K) 66 8.75 9.34 FR-A840-00250(7.5K) 45 12.8 13.7 FR-A840-00310(11K) 34 17.0 18.1 FR-A840-00380(15K) 34 17.0 18.1 FR-A840-00470(18.5K) 21 27.5 29.3 FR-A840-00620(22K) 21 27.5 29.3 FR-A840-00770(30K) 13.5 42.8 45.6 FR-A840-00930(37K) 13.5 42.8 45.6 FR-A840-01160(45K) 13.5 42.8 45.6 FR-A840-01800(55K) 13.5 42.8 45.6 MC r ly T F MC OFF ON OCR Inverter R/L1 P/+ S/L2 (P3) T/L3 PX PR (OCR) Brake resist R Remove the jumper.
(∗1 MC r y T F ON OFF OCR MC Inverter R/L1 P/+ S/L2 (P3) T/L3 PX PR B C (OCR) Brake resis R Remove the jumper.