Synchronize And Freeze; Sync/Unsync - Danfoss VLT PROFIBUS DP MCA 101 Programming Manual

Control
Explanation of the status bits
Bit 00, control not ready/ready
Bit 00=0, the frequency converter has tripped.
Bit 00=1, the frequency converter controls are ready, but
the power component is not necessarily receiving any
power (in case of 24 V external supply to controls).
Bit 01, frequency converter ready
Bit 01=0, the frequency converter is not ready for
operation.
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 released the motor.
Bit 02=1, the frequency converter can start the motor
when a start command is given.
Bit 03, no error/trip
Bit 03=0, the frequency converter is not in fault mode.
Bit 03=1, the frequency converter is tripped, and a reset
signal is required to re-establish operation.
Bit 04, no error/error (no trip)
Bit 04=0, the frequency converter is not in fault mode.
Bit 04=1, 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, the frequency converter is not in fault mode.
Bit 06=1, the frequency converter is tripped and locked.
Bit 07, no warning/warning
Bit 07=0, there are no warnings.
Bit 07=1, a warning has occurred.
Bit 08, speed reference/speed = reference
Bit 08=0, the motor runs, but the present speed is different
from the preset speed reference. It could, for example, be
the case while the speed ramps up/down during start/stop.
Bit 08=1, the present motor speed matches the preset
speed reference.
Bit 09, local operation/bus control
Bit 09=0, [Stop/Reset] is pressed on the LCP, or [2] Local is
selected in parameter 3-13 Reference Site. It is not possible
to control the frequency converter via serial communi-
cation.
Bit 09=1, it is possible to control the frequency converter
via the fieldbus/serial communication.
Bit 10, out of frequency limit
Bit 10=0, the output frequency has reached the value in
parameter 4-11 Motor Speed Low Limit [RPM] or
parameter 4-13 Motor Speed High Limit [RPM].
Bit 10=1, the output frequency is within the defined limits.
Bit 11, no operation/in operation
Bit 11=0, the motor does not run.
Bit 11=1, the frequency converter has a start signal or the
output frequency is higher than 0 Hz.
MG37G202
Programming Guide
Bit 12, frequency converter OK/stopped, auto start
Bit 12=0, there is no temporary overtemperature in the
frequency converter.
Bit 12=1, the frequency converter has stopped because of
overtemperature, but it has not tripped and resumes
operation once the overtemperature stops.
Bit 13, voltage OK/limit exceeded
Bit 13=0, there are no voltage warnings.
Bit 13=1, the DC voltage in the frequency converter's DC
link 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 parameter 4-16 Torque Limit Motor Mode or
parameter 4-17 Torque Limit Generator Mode.
Bit 14=1, the torque limits in parameter 4-16 Torque Limit
Motor Mode and parameter 4-17 Torque Limit Generator
Mode are exceeded.
Bit 15, timer OK/limit exceeded
Bit 15=0, the timers for motor thermal protection and
frequency converter thermal protection have not exceeded
100%.
Bit 15=1, 1 of the timers has exceeded 100%.

4.6 Synchronize and Freeze

The control commands sync/unsync and freeze/unfreeze
are broadcast functions.
Use sync/unsync to synchronize control commands and/or
speed reference to all the connected frequency converters.
Use freeze/unfreeze to freeze the status feedback in the
slaves to obtain synchronized feedback from all connected
slaves.
The synchronize and freeze commands affect only process
data (the PCD part of the PPO).

4.6.1 Sync/Unsync

To obtain simultaneous reactions such as synchronized
start, stop, or speed change in several slaves, use sync/
unsync.
A sync command freezes the relevant control word and
speed reference. Incoming process data are stored, but not
used, until a new sync command or an unsync command
is received.
An unsync command stops the synchronization mechanism
and enables normal DP data exchange.
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