Vacon 100 flow - 9. APPENDIX 1 - VENDOR CONTROL AND STATUS WORD DESCRIPTIONS; 9.1 FBFIXEDCONTROL WORD AND FBGENERALCONTROL WORD

APPENDIX 1 - VENDOR CONTROL AND STATUS WORD DESCRIPTIONS vacon • 75
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9. APPENDIX 1 - VENDOR CONTROL AND STATUS
WORD DESCRIPTIONS
9.1 FBFixedControlWord and FBGeneralControlWord
The Control word is composed of 32 bits. FBFixedControlWord consist of the first 16 bits. FBGen-
eralControlWord consist of the remaining 16 bits. While the functionality of FBFixedControlWord is
fixed in the VACON® standard applications, the functionality of FBGeneralControlWord is totally
application specific and can vary even in the VACON® standard applications.
The meanings of FBFixedControlWord bits are described below. Unused bits have to be set to zero.
NOTE! This table is valid for VACON® standard applications.
Table 78. FBFixedControlWord bits
Bit Function Description
B0 Start/Stop
0 Stop request from fieldbus.
1 Run request from fieldbus.
B1 Direction
0 Requested direction is "FORWARD".
1 Requested direction is "REVERSE".
B2 Fault reset
0 No action.
1
No action. Rising edge (0->1) = Active faults,
alarms and infos are reset.
B3 Stop mode 1
0 Stop mode is unmodified.
1 Stop mode is overridden to "Coasting".
B4 Stop mode 2
0 Stop mode is unmodified.
1 Stop mode is overridden to "Ramping".
B5 Quick ramp time
0 Normal deceleration ramp time.
1
Deceleration ramp time is switched to shorter
than normal.
B6 Freeze Setpoint
0
Changes in the setpoint value from fieldbus (FB
Speed Reference) are taken into use by the appli-
cation.
1
Changes in the setpoint value from fieldbus (FB
Speed Reference) are not taken into use by the
application.
B7 Setpoint to Zero
0
The setpoint value from fieldbus is taken from FB
Speed Reference.
1 The setpoint value from fieldbus is changed to 0.
B8
Request Fieldbus
Control
0
Control Place is as parameterized in the drive
(unchanged).
1 Control Place is overridden to Fieldbus Control.
B9
Request Fieldbus
Reference
0
Source of the setpoint value is as parameterized
in the drive (unchanged).
1
Source of the setpoint value is overridden to
Fieldbus.