Danfoss VLT Refrigeration Drive FC 103 Design Manual page 88

System Integration
3.9.12.4 Control Word according to
PROFIdrive Profile (CTW)
The control word is used to send commands from a master
(for example a PC) to a slave.
3 3
Bit Bit=0
00 Off 1
01 Off 2
02 Off 3
03 Coasting
04 Quick stop
05 Hold frequency output
06 Ramp stop
07 No function
08 Jog 1 Off
09 Jog 2 Off
10 Data invalid
11 No function
12 No function
13 Parameter set-up
14 Parameter set-up
15 No function
Table 3.45 Control Word Bits
Explanation of the control bits
Bit 00, OFF 1/ON 1
Normal ramp stops using the ramp times of the actual
selected ramp.
Bit 00=0 leads to the stop and activation of the output
relay 1 or 2 if the output frequency is 0 Hz, and if [31]
Relay 123 has been selected in parameter 5-40 Function
Relay.
When bit 0=1, the frequency converter is in State 1:
Switching on inhibited.
Bit 01, Off 2/On 2
Coasting stop
If the output frequency is 0 Hz, and if [31] Relay 123 has
been selected in parameter 5-40 Function Relay, when bit
01=0, a coasting stop and activation of the output relay 1
or 2 occurs.
Bit 02, Off 3/On 3
Quick stop using the ramp time of parameter 3-81 Quick
Stop Ramp Time. If the output frequency is 0 Hz and if [31]
Relay 123 has been selected in parameter 5-40 Function
Relay, when bit 02=0, a quick stop and activation of the
output relay 1 or 2 occurs.
When bit 02=1, the frequency converter is in
State 1: Switching on inhibited.
Bit 03, Coasting/No coasting
Coasting stop bit 03=0 leads to a stop.
If the other start conditions are satisfied, when bit 03=1,
the frequency converter can start.
86
®
VLT Refrigeration Drive FC 103
NOTICE
The selection in parameter 8-50 Coasting Select
determines how bit 03 is linked with the corresponding
function of the digital inputs.
Bit 04, Quick stop/Ramp
Bit=1
Quick stop using the ramp time of parameter 3-81 Quick
On 1
Stop Ramp Time.
On 2
When bit 04=0, a quick stop occurs.
On 3
If the other start conditions are fulfilled when bit 04=1, the
No coasting
frequency converter can start.
Ramp
NOTICE
Use ramp
The selection in parameter 8-51 Quick Stop Select
Start
determines how bit 04 is linked with the corresponding
Reset
function of the digital inputs.
Jog 1 On
Jog 2 On
Bit 05, Hold frequency output/Use ramp
Data valid
When bit 05=0, the present output frequency is being
Slow down
maintained even if the reference value is modified.
Catch up
When bit 05=1, the frequency converter can perform its
Selection lsb
regulating function again; operation occurs according to
Selection msb
the respective reference value.
Reverse
Bit 06, Ramp stop/Start
Normal ramp stop using the ramp times of the actual
ramp as selected. In addition, activation of the output relay
01 or 04 if the output frequency is 0 Hz and if [31] Relay
123 has been selected in parameter 5-40 Function Relay.
Bit 06=0 leads to a stop.
If the other start conditions are fulfilled when bit 06=1, the
frequency converter can start.
NOTICE
The selection in parameter 8-53 Start Select determines
how bit 06 is linked with the corresponding function of
the digital inputs.
Bit 07, No function/Reset
Reset after switching off.
Acknowledges event in fault buffer.
When bit 07=0, no reset occurs.
When there is a slope change of bit 07 to 1, a reset occurs
after switching off.
Bit 08, Jog 1 Off/On
Activation of the pre-programmed speed in
parameter 8-90 Bus Jog 1 Speed. JOG 1 is only possible if bit
04=0 and bit 00–03=1.
Bit 09, Jog 2 Off/On
Activation of the pre-programmed speed in
parameter 8-91 Bus Jog 2 Speed. Jog 2 is only possible if bit
04=0 and bit 00–03=1.
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