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Drive control and features
85
Fan control logic
The fan operation can be controlled via parameter
parameter provides the following four operation modes: Normal, Force OFF, Force
ON and Advanced. The control logic (Normal or Advanced) can be overridden by
forcing the fan ON or OFF in which case the fan is running always or never.
In the Normal mode the fan operation is based on the ON/OFF status of the
modulator. In addition, the fan runs a predetermined period after the modulator has
been switched OFF, which prevents the fan from starting and stopping unnecessarily
when the modulator is inactive only for a short period.
In the Advanced fan control mode, the fan operation is based on the measured
temperature of power stage, braking chopper (BC), interface board (INT board) and
DC link voltage. The fan is started if the temperature of the power stage or INT board
or BC rises over the predetermined level. Also an exceptionally high long-term DC
link voltage generates the running command for the fan. The fan is stopped if the
power stage, braking chopper and INT board are cool and the DC link voltage is
below the limit.
With the Normal or Advanced mode the DC voltage activation level for the fan ON
command is 640 VDC.
The fan runs a short period after a power-up regardless of parameter
to remove moisture and dust from the machinery.
Summary of Contents for ACSM1 Series
Page 1: ...ABB motion control drives Firmware manual ACSM1 motion control program ...
Page 4: ......
Page 34: ...Drive programming using PC tools 34 ...
Page 86: ...Drive control and features 86 ...
Page 265: ...Parameters and firmware blocks 265 1 100 us 100 µs 2 1 ms 1 ms 3 50 ms 50 ms ...
Page 302: ...Parameter data 302 ...
Page 422: ...Application program template 422 ...
Page 430: ...Appendix A Fieldbus control 430 ...
Page 500: ...Appendix D Application examples 500 ...
Page 508: ...Appendix E Control chain and drive logic diagrams 508 ...
Page 510: ...3AFE68848270 REV H EN 2015 06 26 Contact us www abb com drives www abb com drivespartners ...