MV3DB Series DB Units
1. Introduction
(07/06)
ALSPA MV3000e Dynamic Braking Units
Page 1-1
1. Introduction
1.1
About this Manual
This Dynamic Braking Manual provides a competent user trained in electrical installation
practice with sufficient information to safely install, commission, maintain and dispose of an
ALSPA MV3000e Dynamic Braking (DB) Unit. The manual should be read in conjunction with
the relevant ALSPA MV3000e Getting Started Manual.
This manual should be regarded as part of the ALSPA MV3000e DB Unit. It should be retained
for the life of the product and should be passed on to any subsequent owner or user.
To use a ALSPA MV3000e DELTA system configured with a DB Unit, refer to T1689, the
Technical Manual for MV3000e DELTA.
1.2
About the ALSPA MV3000e Dynamic Braking Unit
The DB Units described in this manual are intended only to be used when installed within the
associated ALSPA MV3000e MicroCubicle™- style drive and must not be used in any other
manner.
The DB Unit is used in conjunction with an externally mounted braking resistor, to dissipate
kinetic energy stored in a motor and its load. This is regenerated into the ALSPA MV3000e
drive during deceleration or when the load is overhauling. The drive monitors the DC link
voltage and uses the DB Unit to switch the braking resistor into circuit when the voltage
exceeds a pre-set level.
All DB Units are mounted within the MicroCubicle™, and are powered and controlled by the
drive. Braking functions may be configured using parameters which are described in Section 5
(Commissioning).
A typical DB Unit is illustrated in Figure 1-1.
Figure 1-1 A typical DB Unit
