Parameter Description - Danfoss VACON NX Commissioning And Maintenance Manual

3 0 VACON
5.3.3 Par ameter descr iption
The table 5.3-1 includes parameters made to monitor and control the HX-unit. This chapter includes
short explanations on what the different parameters are used for.
P2.10.1 is the actual frequency that the pump motor will run at when producing the required flow in
the system. The speed of the pump frequency should be optimized according to the required flow
(see Chapter 5.4.2, Adjusting the system flow and setting the switch point of the
reduce the wear of the cooling system and therefore extend the MTBF (mean time before failure) of
the HXL unit and the main drives.
P2.10.2 is the min. value of the range of the pressure transmitter PT11. It is used to scale the
pressure transmitter (PT11) low pressure point. The PT11 has a min measure point at 0 bar.
P2.10.3 is the max. value of the range of the pressure transmitter PT11. It is used to scale the
pressure transmitter (PT11) high pressure point. The PT11 has a max measure point at 10 bar.
P2.10.4 is a PT11 low temperature, alarm limit. The default setting for this is set at 0.5 bar. More
information can be found in
P2.10.5 is a selection parameter that should be set to 1. If the PT11 pressure transmitter
malfunctions the parameter can be set to 0 therefore overriding the pump suction side pressure
supervision. The pressure transmitter MUST BE REPLACED as soon as possible, the warranty is not
P2.10.6 is the min. value of the range of the temperature transmitter FTSA11. It is used to scale the
temperature transmitter (FTSA11) low-temperature point. The FTSA11 has a min measure point at
0C.
P2.10.7 is the max. value of the range of the temperature transmitter FTSA11. It is used to scale the
temperature transmitter (FTSA11) high-temperature point. The FTSA11 has a max measure point at
100C.
P2.10.8 is a FTSA11 low-temperature, alarm limit. The default setting for this is set at 22C. More
information can be found in
P2.10.9 is a FTSA11 high-temperature, alarm limit. The default setting for this is set at 28C. More
information can be found in
P2.10.10 is a FTSA11 high-temperature, trip limit. The default setting for this is set at 35C. This
means
disconnected) when the temperature is over 35C. The HXL unit will stay online (pump running).
More information can be found in
P2.10.11
to change the pumps according to the time setting. This is to be used ONLY when operating the HX-
series model HXM120 (double pumps). If this value is set to 0h, the pump change will occur every 30
seconds. This is useful for testing and commissioning purposes because all shutoffs are also
deactivated during these 30 seconds. The value, 169, will deactivate the attempt to change the pump
and should be used when operating the HXL040 or HXL120.
5
chapter 5.3.8, Low-pressure
chapter 5.3.7, Temperature alarm
chapter 5.3.7, Temperature alarm
chapter 5.3.7, Temperature alarm
Local contacts: http:/ / dr ives.danfoss.com/ danfoss- dr ives/ local - contacts/
alarm.
settings.
settings.
settings.
-168 (hour) the system will try
COMMI SSI ONI NG
FTSA11). This will