Ic Grid Converter Profile; Control Word (Ctw) In Ic Grid Converter - Danfoss iC7 Series Operating Manual

iC7 Series Modbus
Operating Guide
Coast stop
OR quick stop
CTW bit 1=false
OR bit 2=false
Coast stop
CTW bit 1=false
= 1 priority
st
= 2 priority
nd
= 3 priority
rd
Illustration 1: General State Diagram

2.2.3 iC Grid Converter Profile

2.2.3.1 Control Word (CTW) in iC Grid Converter

Table 9: Fieldbus Control Word
Bit Name Description
0 Switch On
0: Pre-charging
Enable
running are prevented or interrupted. If the main circuit
breaker is closed, it is opened
1: Pre-charging
running are not prevented or interrupted.
1 MCB Close
0: Closing the main circuit breaker is prevented
Enable
main circuit breaker is opened
ted or interrupted.
1: Closing the main circuit breaker is not prevented
2 Quick Stop
0: Activate Quick Stop.
Inverse
1: Do not activate Quick Stop.
3 Start
0: Stop the unit if it is running, or stop the startup se-
quence if it is not completed.
1: Initiate the startup sequence (DC-link pre-charge
closing the main circuit breaker
keep the unit running.
14 | Danfoss A/S © 2023.09
S3: Switching ON inhibited
STW bit 6=true 0, 1, 2=false
OFF Coast stop
AND No coast stop OR quick stop
AND No quick stop CTW bit 1=false
CTW bit 0=false OR bit 2=false
AND bit 1=true
AND bit 2=true
S2: Ready for switching ON
STW bit 0=true 1, 2, 6=false
ON OFF
CTW bit 0=true CTW bit 0=true
S3: Switched ON
STW bit 0,1=true 2, 6=false
Enable Disable
operation operation
CTW bit 3=true CTW bit 3=false
S4: Operation
STW bit 0, 1, 2=true 6=false
, closing the main circuit breaker
(1)
.
(1)
, closing the main circuit breaker
(1)
, and running is preven-
(1)
, and start running), or
(2)
Coast stop
CTW bit 1=false
S5: Switching off
STW bit 0, 1=true
bit 2, 6=false
Standstill
STW bit 2=false
Ramp stop
ON
CTW bit 0=false
CTW bit 0=true
Further information
This bit is used with control word bit 3 to enable
, and
(1)
operation of the unit. When this bit is set to false
while running, the unit stops. As shown in the
state diagram, to transition from S1 to S2, this bit
, and
(1)
must be false, otherwise switching on keeps
from being inhibited.
This bit is used to move from S1 to S2 and allows
or the
(1)
MCB to close when charging is completed. If the
bit is removed anytime during operation, then
the unit comes back to S1.
.
(1)
This bit is used to request a quick stop to be exe-
cuted. When the bit is set to false during opera-
tion, the unit stops modulation, and depending
on the configuration an exception is issued.
A rising edge is required for DC-link pre-charge
to start. Depending on parameter number 5114,
a rising edge can be required for the unit to start.
,
(2)
In that case, if for any reason the unit cannot be
started when the rising edge is detected, it will
not start until a new rising edge is issued.
AQ456329149698en-000101 / 136R0334
Overview
Standstill
Quick stop
Quick stop
OFF Quick stop
CTW bit 2=false