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2 Parameter Description
[161]
Running reverse
[165]
Local reference active
[166]
Remote reference active
2
[167]
Start command active
[168]
Drive in hand mode
[169]
Drive in auto mode
[180]
Clock Fault
[181]
Preventive Maintenance
[190]
No-Flow
[191]
Dry Pump
[192]
End of Curve
[193]
Sleep Mode
[194]
Broken Belt
[195]
Bypass Valve Control
The below setting options are all related to the Cascade Controller.
Wiring diagrams and settings for parameter, see group 25-** for more details.
82
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The output is high when the frequency converter is running counter clockwise (the logical product
of the status bits 'running' AND 'reverse').
Reference Site
Output is high when par. 3-13
Linked to hand auto
at the same time as the LCP is in Hand on mode.
Output is high when par. 3-13
Reference Site = Remote
LCP is in [Auto on] mode.
Output is high when there is an active Start command. (I.e.[Auto On] and a start command via
digital input or bus is active, or [Hand On].
NB!
All inverse Stop/Coast commands must be inactive.
Output is high when the frequency converter is in Hand on mode (as indicated by the LED light
above [Hand on].
Output is high when the frequency converter is in Hand on mode (as indicated by the LED light
above [Auto on].
The clock function has been reset to default (2000-01-01) because of a power failure.
One or more of the Preventive Maintenance Events programmed in par. 23-10, Preventive Mainte-
nance Item, has passed the time for the specified action in par. 23-11, Maintenance Action.
A No-Flow situation or Minimum Speed situation has been detected if enabled in
Detection
. par. 22-21 and/or
No-Flow Detection
A Dry Pump condition has been detected. This function must be enabled in par. 22-26, Dry Pump
Function.
Active when an End of Curve condition is present.
The frequency converter/system has turned into sleep mode. See
A Broken Belt condition has been detected. This function must be enabled in par. 22-60, Broken
Belt Detection.
The bypass valve control (Digital / Relay output in the frequency converter) is used for compressor
systems to unload the compressor during start-up by using a bypass valve. After the start command
is given the bypass valve will be open until the frequency converter reaches
par. 4 -11) . After the limit has been reached the bypass valve will be closed, allowing the compressor
to operate normally. This procedure will not be activated again before a new start is initiated and
the frequency converter speed is zero during the receiving of start signal.
be used in order to delay the motor start. The Bypass valve control principle:
Speed
REF
Speed
M in
ON
OFF
ON
OFF
St op
Star t
MG.20.W1.22 - VLT is a registered Danfoss trademark
VLT Automation VT Drive FC322
Reference Site
= [2] Local or when par. 3-13
[1] or
Linked to hand/auto
, par. 22-22.
Sleep mode
, par. 22-4*.
Motor speed low limit
Start Delay
T ime
T ime
T ime
Programming Guide
= [0]
[0] while the
Minimum Speed
,
, par. 1-71 can
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