Operating instructions

4.5.2. Status Word according to FC Profile (STW)
The status word is used to inform the master
(e.g. a PC) of the operation mode of the slave
(frequency converter).
Please refer to Application examples for an
example of a status word telegram using PPO
type 3.
Explanation of the Status Bits
Bit 00, Control not ready/ready
Bit 00 = "0" means that the frequency con-
verter has tripped.
Bit 00 = "1" means that the frequency con-
verter controls are ready, but that the power
component is not necessarily receiving any
power supply (in case of external 24 V supply
to controls).
Bit 01, Drive ready
Bit 01 = "1". The frequency converter is ready
for operation, but there is an active coasting
command via the digital inputs or via serial
communication.
Bit 02, Coasting stop
Bit 02 = "0". The frequency converter has re-
leased the motor.
Bit 02 = "1". The frequency converter can
start the motor when a start command is giv-
en.
Bit
Bit = 0 Bit = 1
00 Control not
ready
Control ready
01 Drive not ready Drive ready
02 Coasting Enable
03 No error Trip
04 No error Error (no trip)
05 Reserved -
06 No error Triplock
07 No warning Warning
08 Speed ≠ refer-
ence
Speed = reference
09 Local operation Bus control
10 Out of frequen-
cy limit
Frequency limit ok
11 No operation In operation
12 Drive OK Stopped, autostart
13 Voltage OK Voltage exceeded
14 Torque OK Torque exceeded
15 Timer OK Timer exceeded
Bit 03, No error/trip
Bit 03 = "0" means that the frequency converter is not in fault mode.
Bit 03 = "1" means that the frequency converter is tripped, and that a reset signal is required to
re-establish operation.
Bit 04, No error/error (no trip)
Bit 04 = "0" means that the frequency converter is not in fault mode.
Bit 04 = “1” means that there is a frequency converter error but no trip.
Bit 05, Not used
Bit 05 is not used in the status word.
Bit 06, No error / triplock
Bit 06 = "0" means that the frequency converter is not in fault mode.
Bit 06 = “1” means that the frequency converter is tripped, and locked.
Bit 07, No warning/warning
Bit 07 = "0" means that there are no warnings.
Bit 07 = "1" means that a warning has occurred.
VLT
®
Profibus 4. How to Control the Frequency Converter
MG.33.C4.02 - VLT
®
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