US 7,482,942 B2
Arrangement and method for starting a machine
Vesa Kajander, Klaukkala (Finland); and Arto Lehtonen, Vantaa (Finland)
Assigned to ABB Oy, Helsinki (Finland)
Filed on May 31, 2006, as Appl. No. 11/443,261.
Claims priority of application No. 20050581 (FI), filed on May 31, 2005.
Prior Publication US 2007/0008161 A1, Jan. 11, 2007
Int. Cl. G08B 21/00 (2006.01)
U.S. Cl. 340—679  [340/522; 340/516; 381/56] 13 Claims
OG exemplary drawing
 
1. An arrangement for an industrial drive, in which at least one machine can be started from a location separate from the machine, said arrangement comprising:
an alarm device that can be activated before the part of machine is started, wherein the alarm device comprises:
two sound sources and two means for controlling a sound source that can be activated before starting the machine so that the alarm sounds from both sound sources are intermittent and jointly comprise a substantially solid continuous sound.