Danfoss VLT AQUA Drive FC 202 Programming Manual page 75

Parameter Description
[189] External Fan External fan control is active.
Control
[190] No-Flow A No-Flow situation or Minimum Speed
situation has been detected if enabled in
Low Power Detection. Parameter 22-21 Low
Power Detection, parameter 22-22 Low
Speed Detection.
[191] Dry Pump A Dry Pump condition has been detected.
This function must be enabled in
parameter 22-26 Dry Pump Function.
[192] End of Curve Active when an End of Curve condition is
present.
[193] Sleep Mode The frequency converter/system has
turned into sleep mode. See parameter
group 22-4* Sleep Mode.
[194] Broken Belt A broken belt condition has been
detected. Enable this function in
parameter 22-60 Broken Belt Function.
[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 is open until the
frequency converter reaches
parameter 4-11 Motor Speed Low Limit
[RPM]). After the limit has been reached
the bypass valve is closed, allowing the
compressor to operate normally. This
procedure is not activated again before a
new start is initiated and the frequency
converter speed is zero during the
receiving of start signal. Start Delay,
parameter 1-71 Start Delay can be used in
order to delay the motor start.
Speed
REF
Speed
Min
ON
OFF
ON
OFF
Start
Illustration 3.24 Bypass Valve Control
Principle
[199] Pipe Filling Active when the pipe fill function is
operating. See parameter group 29-0*
Water Application Functions.
The below setting options are all related to the
Cascade Controller.
See parameter group 25-** Cascade Controller
for more details.
[200] Full All pumps running at full speed
Capacity
MG20O702
Programming Guide
[201] Pump1
[202] Pump2
[203] Pump3
5-3* Digital Outputs
Table 3.11 Pumps Controlled by the Cascade Controller
5-30 Terminal 27 Digital Output
Option:
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[8]
[9]
[10]
Time
[11]
[12]
Time
[13]
Stop Time
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[25]
[26]
[27]
[28]
[29]
[30]
Danfoss A/S © Rev. 2014-01-21 All rights reserved.
One or more of the pumps controlled by the
Running cascade controller are running. The function
also depends on the setting in
parameter 25-05 Fixed Lead Pump. If set to [0]
No Pump 1 refers to the pump controlled by
relay RELAY1 etc. If set to [1] Yes Pump 1 refers
to the pump controlled by the frequency
converter only (without any of the built in
relays involved) and Pump 2 to the pump
controlled by the relay RELAY1. See Table 3.11
See [201]
Running
See [201]
Running
Setting in Setting in parameter 25-05 Fixed Lead
parameter group
[0] No
[201] Pump 1 Controlled by
Running RELAY1
[202] Pump 2 Controlled by
Running RELAY2
[203] Pump 3
Running
Function:
No operation
Control Ready
Drive ready
Drive rdy/rem ctrl
Stand-by / no warning
Running
Running / no warning
Run on ref/no warn
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
Reverse
Bus OK
Torque limit & stop
Brake, no brake war
Brake ready, no fault
Brake fault (IGBT)
3
Pump
[1] Yes
Frequency Converter
controlled
Controlled by
RELAY1
Controlled by
RELAY2
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