Danfoss VLT CDS302 Operating Instructions Manual page 65

Parameter Descriptions
[85] SL Digital See 13-52 SL Controller Action. The input
Output F will go high whenever the Smart Logic
Action [43] Set dig. out. A high is executed.
The input will go low whenever the Smart
Logic Action [37] Set dig. out. A low is
executed.
[122] No alarm The output is high when no alarm is
present.
[123] Start command The output is high when there is an
active active Start command (i.e. via digital input
bus connection or [Hand on] or [Auto on],
and no Stop or Start command is active.
[124] Running The output is high when the frequency
reverse converter is running counter clockwise
(the logical product of the status bits
'running' AND 'reverse').
[125] Drive in hand The output is high when the frequency
mode converter is in Hand on mode (as
indicated by the LED light above [Hand
on].
[126] Drive in auto The output is high when the frequency
mode converter is in Hand on mode (as
indicated by the LED light above [Auto
on].
[139] Compressor Use with cascade controller. Logic will
Inv. Interlock stop the fixed speed compressor and give
a warning.
[140] Compressor Use with cascade controller. Logic will
Inv. Interlock stop the fixed speed compressor and give
a warning.
[141] Compressor Use with cascade controller. Logic will
Inv. Interlock stop the fixed speed compressor and give
a warning.
[195] Bypass Valve The bypass valve control (Digital/Relay
Control 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
4-11 Motor Speed Low Limit [RPM]). 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. 1-71 Start
Delay can be used in order to delay the
motor start. The bypass valve control
principle:
MG34M302 - VLT
®
Operating Instructions VLT CDS302 and CDS303
The below setting options are all related to the Cascade
Controller.
Wiring diagrams and settings for parameter, see parameter
group 25-** Cascade Pack Controller or more details.
6.6.5 5-4* Relays (Dry Contacts)
NOTE
Relays 7, 8, and 9 are only available if MCB 105 relay card
is installed.
NOTE
Relay 1 is dedicated to controlling the solenoid valve.
Parameters for configuring the timing and the output
functions for the relays.
5-40 Function Relay
Array [8] (Relay 1 [0], Relay 2 [1], Relay 7 [6], Relay 8 [7],
Relay 9 [8])
[0]
[1]
[2]
[3]
[4]
[5]
*
[6]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
®
is a registered Danfoss trademark/Commercial Compressor
Speed
REF
Speed
Min
ON
OFF
ON
OFF
Start
Illustration 6.6
No Operation
Control Ready
Drive Ready
Drive Ready/Remote
Stand-by/No Warning
Running
Running/No Warning
Run on Ref./No Warning
Alarm
Alarm or Warning
At Torque Limit
Out of Current Range
Below Current, low
Above Current, high
Out of Speed Range
Below Speed, low
Above Speed, high
Out of Feedb. Range
Below Feedback, low
Above Feedback, high
Thermal Warning
Time
Time
Stop
Time
6
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