Danfoss VLT AQUA Drive Design Manual page 152

7. RS-485 Installation and Set-up
Bit 08, Speed≠ reference/speed = reference:
Bit 08 = '0': The motor is running, but the present speed is different from the preset speed ref-
erence. For example, this might be the case when the speed ramps up/down during start/stop.
Bit 08 = '1': The motor speed matches the preset speed reference.
Bit 09, Local operation/bus control:
Bit 09 = '0': [STOP/RESET] is activate on the control unit or
Site
is selected. You cannot control the adjustable frequency drive via serial communication. Bit
09 = '1' It is possible to control the adjustable frequency drive via serial communication or the
serial communication bus.
Bit 10, Out of frequency limit:
Bit 10 = '0': The output frequency has reached the value in par. 4-11
par. 4-13
Bit 11, No operation/in operation:
Bit 11 = '0': The motor is not running. Bit 11 = '1': The adjustable frequency drive has a start
signal, or the output frequency is greater than 0 Hz.
7
Bit 12, Drive OK/stopped, autostart:
Bit 12 = '0': There is no temporary overtemperature in the inverter. Bit 12 = '1': The inverter stops
because of overtemperature, but the unit does not trip and will resume operation once the over-
temperature stops.
Bit 13, Voltage OK/limit exceeded:
Bit 13 = '0': There are no voltage warnings. Bit 13 = '1': The DC voltage in the intermediate circuit
of the adjustable frequency drive is too low or too high.
Bit 14, Torque OK/limit exceeded:
Bit 14 = '0': The motor current is lower than the torque limit selected in par. 4-18
Bit 14 = '1': The torque limit in par. 4-18
Bit 15, Timer OK/limit exceeded:
Bit 15 = '0': The timers for motor thermal protection and VLT thermal protection have not excee-
ded 100%. Bit 15 = '1': One of the timers exceeds 100%.
152
Motor Speed High Limit
. Bit 10 = "1": The output frequency is within the defined limits.
NOTE
All bits in the STW are set to '0' if the connection between the Interbus option and
the adjustable frequency drive is lost, or if an internal communication problem has
occurred.
MG.20.N2.22 - VLT
Local control
Current Limit
is exceeded.
® is a registered Danfoss trademark.
VLT ® AQUA Drive Design Guide
Reference
in par. 3-13
Motor Speed Low Limit
or
Current Limit
.