Illustration 9.3: Connection to 24 V back-up supply on Unit Sizes
15, 21, 22, 31 and 32.
9.10 Brake Resistors
In applications where the motor is used as a brake, energy is generated in the motor and send back into the frequency converter. If the energy can not be
transported back to the motor it will increase the voltage in the converter DC-line. In applications with frequent braking and/or high inertia loads this increase
may lead to an over voltage trip in the converter and finally a shut down. Brake resistors are used to dissipate the excess energy resulting from the regenerative
braking. The resistor is selected in respect to its ohmic value, its power dissipation rate and its physical size. GE offers a wide variety of different resistors that are
specially designed to our frequency converters. See the section
Control with brake function
for the dimensioning of brake resistors.
9.11 Remote Mounting Kit for Keypad
The Keypad can be moved to the front of a cabinet by using the remote build
in kit. The Unit Size is the IP65. The fastening screws must be tightened with
a torque of max. 1 Nm.
Technical data
Unit Size:
IP 65 front
Max. cable length between and unit:
3 m
Communication std:
RS 485
Ordering no. RMKYDAC
Illustration 9.4: Keypad Kit with graphical Keypad, fasteners, 3 m cable and gasket.
AF-650 GP Design Guide
177
9
Summary of Contents for AF-650 GP Series
Page 5: ...AF 650 GP Design Guide 4 1...
Page 53: ...AF 650 GP Design Guide 52 4...
Page 97: ...Please note airflow directions 6 1 5 Mechanical Dimensions AF 650 GP Design Guide 96 6...
Page 98: ...Please note airflow directions AF 650 GP Design Guide 97 6...
Page 99: ...Please note airflow directions AF 650 GP Design Guide 98 6...
Page 100: ...Please note airflow directions AF 650 GP Design Guide 99 6...
Page 173: ...Max cable length 150 m AF 650 GP Design Guide 172 9...
Page 179: ...AF 650 GP Design Guide 178 9...