Danfoss VLT CDS302 User Manual

[85] SL Digital
Output F
See 13-52 SL Controller Action. The input
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
active
The output is high when there is an
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
reverse
The output is high when the frequency
converter is running counter clockwise
(the logical product of the status bits
‘running’ AND ‘reverse’).
[125] Drive in hand
mode
The output is high when the frequency
converter is in Hand on mode (as
indicated by the LED light above [Hand
on].
[126] Drive in auto
mode
The output is high when the frequency
converter is in Hand on mode (as
indicated by the LED light above [Auto
on].
[139] Compressor
Inv. Interlock
Use with cascade controller. Logic will
stop the fixed speed compressor and give
a warning.
[140] Compressor
Inv. Interlock
Use with cascade controller. Logic will
stop the fixed speed compressor and give
a warning.
[141] Compressor
Inv. Interlock
Use with cascade controller. Logic will
stop the fixed speed compressor and give
a warning.
[195] Bypass Valve
Control
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
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:
Time
REF
Min
Speed
ON
Time
Time
OFF
ON
OFF
Start
Stop
130BA251.10
Speed
Illustration 6.6
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]
No Operation
[1] Control Ready
[2] Drive Ready
[3] Drive Ready/Remote
[4] Stand-by/No Warning
[5] * Running
[6] Running/No Warning
[8] Run on Ref./No Warning
[9] Alarm
[10] Alarm or Warning
[11] At Torque Limit
[12] Out of Current Range
[13] Below Current, low
[14] Above Current, high
[15] Out of Speed Range
[16] Below Speed, low
[17] Above Speed, high
[18] Out of Feedb. Range
[19] Below Feedback, low
[20] Above Feedback, high
[21] Thermal Warning
Parameter Descriptions
Operating Instructions VLT
®
CDS302 and CDS303
MG34M302 - VLT
®
is a registered Danfoss trademark/Commercial Compressor 65
6
6

Danfoss VLT CDS302 Specifications

General

Brand	Danfoss
Model	VLT CDS302
Category	DC Drives
Language	English