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Summary
Preface
P. 6
Chapter 2
P. 17
Technical data
Chapter 5
P. 76
Reception, storage
and installation
Chapter 4
P. 54
General information
Chapter 3
P. 47
Application notes
Chapter 6
P. 115
Options
Chapter 7
P. 129
Preventive maintenance
Chapter 1
P. 15
Overview
and installation diagram
Answer Drives 1000
117
6
6.2.2 RESISTOR INSTALLATION AND CONNECTION
The resistors must be installed outside of the drive in a position in which
they can dissipate heat
The resistor reaches high temperatures, therefore, avoid installing it in the
vicinity of the drive or of any other device which could be damaged by the
heat emission.
Protect the resistor against accidental contact. The resistor must be
protected by a suitable thermal protector that opens the network remote
control switch in case of intervention.
Use the same type of cable used at the drive power input (see Chapter 5)
to make sure that the input fuses will also protect the resistor cables.
Alternatively, it is possible to use two screened cables with the same cross
section of input cables. The maximum cable length of the resistor is 5 m
(16.5 ft). For connection, see the drive connection example.
The rated power of the resistor is not calculated to operate with
duty-cycle = 1. In case of failure of the power braking switch, the resistor
is directly connected on the network via the rectifier jumper. In a similar
situation, the resistor heats up to a high temperature and a failure of the
resistor itself may occur.
To avoid this situation, the resistor must be protected by an adequate
temperature relay: its intervention must open the main switch that
protects the input line.
The cables of the thermal device must be screened and of a length not
exceeding the resistor cables length
It is compulsory, for safety problems, to provide a contactor on
the drive power supply input and make sure that it opens in case
of over-temperature of the resistor.
Figure 6.2.2.1 shows a simple example of connection.
FIGURE 6.2.2.1 EXAMPLE OF CONTACTOR CONNECTION
6.2.2 RESISTOR INST
ALLA
TION AND CONNECTION
AD1000
Summary of Contents for AD1A008FBBNH
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