Chapter 7 Optional AccessoriesC2000 Plus
7-7
Unit: mm
Models L1 L2 L3 W H A L
BR080W200
140±2 125±2 100±1 40±0.5 20±0.5
5.3±0.5 200±20
BR080W750
BR200W091
165±2 150±2 125±1
60±0.5 30±0.5
BR200W360
BR300W070
215±2 200±2 175±1
BR300W250
BR400W040
265±2 250±2 225±1
BR400W150
Table 7-6
2. Select the resistance value, power and brake usage (ED %) according to Delta rules.
Figure 7-3
ED% = T1/T0 x 100 (%)
Explanation:
Brake usage ED (%) is the amount of time needed for
the brake unit and brake resistor to dissipate heat
generated by braking. When the brake resistor heats
up, the resistance increases with temperature, and
braking torque decreases accordingly.
For safety, install a thermal overload relay between the brake unit and the brake resistor in conjunction
with the magnetic contactor (MC) at the drive mains input for additional protection. The thermal
overload relay protects the brake resistor from overheat damage due to frequent or continuous braking.
Under such circumstances, turn off the power to prevent damage to the brake resistor, brake unit and
the drive. NOTE: Never use it to disconnect the brake resistor.
Figure 7-4
3. 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.
4. Consider environmental safety factors when installing the brake resistors. If you use the minimum
resistance value, consult your local dealers for the power calculation.
5. 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 user manual thoroughly prior to operation. Visit the following links to get the instruction sheets for
the wiring in the brake unit:
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