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6.4 Selecting Options
6.4.1 Peripheral equipment options
[ 1 ] Braking resistors
A braking resistor converts regenerative energy generated from deceleration of the motor and converts
it to heat for consumption. Use of a braking resistor results in improved deceleration performance of
the inverter.
Refer to Chapter 7, Section 7.2 "Selecting a Braking Resistor."
[ 1.1 ] Standard model
The standard model of a braking resistor integrates a facility that detects the temperature on the heat
sink of the resistor and outputs a digital ON/OFF signal if the temperature exceeds the specified level
(as an overheating warning signal). To ensure that the signal is recognized at one of the digital input
terminals of the FRENIC-Mini, assign the external alarm (THR) to any of terminals [X1] to [X3],
[FWD] and [REV]. Connect the assigned terminal to terminal [1] of the braking resistor. Upon
detection of the warning signal (preset detection level: 150°C (302°F)), the inverter simultaneously
transfers to Alarm mode, displays alarm
0h2
on the LED monitor and shuts down its power output.
Figure 6.6 Braking Resistor (Standard Model) and Connection Example
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