Optional Dynamic Brake Hardware; Physical Installation - Baldor 18H Series Installation & Operating Manual

Section 1
General Information

Optional Dynamic Brake Hardware

Physical Installation

3-26 Receiving & Installation
WARNING: Resistors may generate enough heat to ignite combustible
materials. To avoid fire hazard, keep all combustible materials and
flammable vapors away from brake resistors.
Dynamic Brake (DB) Hardware must be installed on a flat, non-flammable, vertical
surface to obtain effective cooling and operation. The ambient temperature must not
exceed 80 C.
1. Select a clean VERTICAL surface that is free from corrosive gasses, liquids,
vibration, dust and metallic particles.
Caution: If the DB hardware mounting is in any position other than vertical
(Figure 3-11), the DB hardware must be derated by 35% of its rated
capacity.
2. Mount the DB hardware as shown in Figure 3-11.
Figure 3-11 DB Hardware Installation
Maximum temperatures
near wall.
É
É É
80 C
É
70 C
É É
65 C
É É
70 C
É É
75 C
É É
É É
É É
É
Maximum temperatures
above the enclosure.
85 C
115 C
115 C
48
36
200 C
24
12
Heat shield inside RBA
units must be in this
vertical direction to
protect transistor and
circuit board.
MN718