Delta EB3000 Series User Manual page 394

2. Any damage to the drive or other equipment caused by using brake resistors and brake units that are not
provided by Delta voids the warranty.
3. Consider environmental safety factors when installing the brake resistors. If you use the minimum resistance
value, consult your local dealers for the power calculation.
4. When using more than two brake units, the equivalent resistor value of 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-
4160-4185_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-
6110-6160-6200_I_TSE_20121030.pdf
5. The selection tables are for normal use. If the AC motor drive requires frequent braking, increase the Watts by
two to three times.
6. Thermal Overload Relay (TOR):
Thermal overload relay selection is based on its overload capacity. A standard braking capacity of the VFD-ED
is 10%ED (Tripping time = 10s). As shown in the graph below, a 460V, 11 kw VFD-ED requires the thermal
relay to take 260% overload capacity for 10 seconds (hot starting) and the braking current is 17.7 A. In this
case, select a thermal overload relay larger than 17.7 / 2.6 = 6.8 (A). The specification of each thermal relay
may vary among different manufacturers. Carefully read the specification before using it.
Chapter 11 Optional AccessoriesEB3000
11-5