Danfoss VLT AQUA Drive FC 200 Programming Manual page 71

Parameter Description
[194] Broken Belt
[195] Bypass Valve
Control
3 3
[199] Pipe Filling
The below setting options are all related to the Cascade
Controller.
See parameter group 25-** Cascade Controller for more
details.
[200] Full
Capacity
[201] Pump1
Running
[202] Pump2
Running
[203] Pump3
Running
70
®
VLT
A Broken Belt condition has been detected.
This function must be enabled in
22-60 Broken Belt Function.
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. Start Delay, 1-71 Start Delay can be
used in order to delay the motor start. The
Bypass valve control principle:
Speed
REF
Speed
Min
Time
ON
OFF
Time
ON
OFF
Start Stop Time
Illustration 3.23
Active when the Pipe Fill function is
operating. See parameter group 29-0*.
All pumps running and at full speed
One or more of the pumps controlled by the
Cascade Controller are running. The function
will also depend on the setting in 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 build in relays involved)
and Pump 2 to the pump controlled by the
relay RELAY1. See Table 3.14
See [201]
See [201]
MG20O602 - VLT
AQUA Drive Programming Guide
Setting in parameter
group 5-3*
[201] Pump 1
Running
[202] Pump 2
Running
[203] Pump 3
Running
Table 3.14 Pumps Controlled by the Cascade Controller
5-30 Terminal 27 Digital Output
Option:
[0] No operation Same options and functions as parameter
*
5-31 Terminal 29 Digital Output
Option:
[0] No operation Same options and functions as parameter
*
5-32 Term X30/6 Digi Out (MCB 101)
Option:
[0] No operation This parameter is active when option module
*
5-33 Term X30/7 Digi Out (MCB 101)
Option:
[0] No operation This parameter is active when option module
*
3.7.4 5-4* Relays
Parameters for configuring the timing and the output
functions for the relays.
5-40 Function Relay
Option:
[0] No operation
*
[1] Control ready
[2] Drive ready
[3] Drive rdy/rem ctrl
[4] Stand-by / no warning
[5] Running
[6] Running / no warning
[8] Run on ref/no warn
[9] Alarm
®
is a registered Danfoss trademark
Setting in 25-05 Fixed Lead Pump
[0] No [1] Yes
Controlled by Frequency Converter
RELAY1 controlled
Controlled by Controlled by
RELAY2 RELAY1
Controlled by
RELAY2
Function:
group 5-3*.
Function:
group 5-3*.
Function:
MCB 101 is mounted in the frequency
converter. Same options and functions as
parameter group 5-3*.
Function:
MCB 101 is mounted in the frequency
converter. Same options and functions as
parameter group 5-3*.
Function:
Select options to define the
function of the relays.
The selection of each mechanical
relay is realized in an array
parameter.