VLT ® 2000 Series The control possibilities of the VLT I VLT status The four control and status bytes are used to send control commands to the frequency converter when the telegram is sent from the master and to send sta- tus from the frequency converter to the master when the telegram is returned from the VLT frequency con- verter. The four bytes operate as status from the frequency converter with the following functions: Note: Each byte consists of 8 bits, but the frequency converter uses only the last 4 bits.
56 MG.20.B6.02 – VLT is a registered Danfoss trademark ASCII 0 / 1 Status word Byte 8 Byte 7 Byte 6 Byte 5 T I M E R S O K / L I M I T C U R R E N T O K / L I M I T V O L T A G E O K / L I M I T V L T O K / S T A L L I N G A U T O S T A R T N O T R U N N I N G / R U N N I N G O U T O F R A N G E / F R E Q L I M I T O K L O C A L O P E R A T I O N / B U S C O N T R O L S P E E D · R E F / S P E E D = R E F N O W A R N I N G / W A R N I N G N O S T A R T I N H I B I T / S T A R T I N H I B I T O N 3 / O F F 3 O N 2 / O F F 2 N O F A U L T / T R I P M O T O R C O A S T I N G / P O S S I B L E V L T N O T R E A D Y / R E A D Y C T R N O T R E A D Y / R E A D Y 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 @ A B C D E F G H I J K L M N O 1/2 byte 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 0 1 0 0 0 1 0 1 0 1 1 0 0 1 1 1 1 0 0 0 1 0 0 1 1 0 1 0 1 0 1 1 1 1 0 0 1 1 0 1 1 1 1 0 1 1 1 1 1/2 byte 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 0 1 0 0 0 1 0 1 0 1 1 0 0 1 1 1 1 0 0 0 1 0 0 1 1 0 1 0 1 0 1 1 1 1 0 0 1 1 0 1 1 1 1 0 1 1 1 1 1/2 byte 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 0 1 0 0 0 1 0 1 0 1 1 0 0 1 1 1 1 0 0 0 1 0 0 1 1 0 1 0 1 0 1 1 1 1 0 0 1 1 0 1 1 1 1 0 1 1 1 1 1/2 byte 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 0 1 0 0 0 1 0 1 0 1 1 0 0 1 1 1 1 0 0 0 1 0 0 1 1 0 1 0 1 0 1 1 1 1 0 0 1 1 0 1 1 1 1 0 1 1 1 1