Chapter 7 Optional Accessories CFP2000 4. Any damage to the drive or other equipment caused by using brake resistors and brake modules that are not provided by Delta voids the warranty. 5. Consider environmental safety factors when installing the brake resistors. If you use the minimum resistance value, consult local dealers for the power calculation. 6. When using more than two brake units, the equivalent resistor value of the parallel brake unit cannot be less than the value in the column “Min. Resistor Value [Ω]”. Read the wiring information in the brake unit instruction sheet thoroughly prior to operation.
Visit the following links to get the instruction sheets for the wiring in the brake unit: VFDB2015 / 2022 / 4030 / 4045 / 5055 Braking Modules Instruction Sheet http://www.deltaww.com/filecenter/Products/download/06/060101/Option/DELTA_IA-MDS_VFDB_I_EN_ 20070719.pdf VFDB4110 / 4160 / 4185 Braking Modules Instruction Sheet http://www.deltaww.com/filecenter/Products/download/06/060101/Option/DELTA_IA-MDS_VFDB4110-41 60-4185_I_EN_20101011.pdf VFDB6055 / 6110 / 6160 / 6200 Braking Modules Instruction Sheet http://www.deltaww.com/filecenter/Products/download/06/060101/Option/DELTA_IA-MDS_VFDB6055-61 10-6160-6200_I_TSE_20121030.pdf 7. This chart is for normal usage.
If the AC motor drive requires frequent braking, increase the Watts by two to three times. 8. Thermal Overload Relay (TOR), for 460V models: Thermal overload relay selection is based on its overload capacity. A standard braking capacity of the CFP2000 is 10%ED (Tripping time=10s). As shown in the figure below, a 460V, 110 kW CFP2000 required the thermal relay to take 260% overload capacity for 10 seconds (hot starting) and the braking current is 126 A (refer to the tables in the section). In this case, select a thermal overload relay rated at 50 A. The property of each thermal relay may vary among different manufacturers. Carefully read the specification before using it. Figure 7-13 7-7