Xylem HYDROVAR HV 4.150 / 4.185 / 4.220 - Manual (Page 62)

62
Actuator: (For SINGLE pump operation only!)
The actuator mode has to be used if a fixed speed setting is required or an external speed
signal is connected and the HYDROVAR is just used like a standard VFD.
In this case, the internal controller is shut off, so the HYDROVAR does not control the set
value but runs the connected motor at a frequency proportional to the input signal which
is connected to the analogue inputs or is set directly on the HYDROVAR.
• A manual switching between the analogue inputs is possible by using the corresponding
digital inputs.
• The frequency varies along the programmed Ramps 1 (accelerative) and 2 (declarative).
The functions thermal protection and external ON/OFF remain still active.
• The functions External ON/OFF, Motor Overheat, Lack of water and all other internal
protections still work.
In the actuator mode it is also possible to work with pre-selected frequencies for a manual
control of the HYDROVAR. It is possible to set two different frequencies in the submenu
REQUIRED VALUES [0800]. A changeover of these frequencies can be done with parameter
SW REQ. VAL [0815].
X3/13: Voltage signal input (Required value 1) 0-10V 0 - MAX.FREQ.[0245]
X3/15: Voltage signal input (Required value 2) 0-10V 0 - MAX.FREQ.[0245]
X3/18: Current signal input (Required value 1) 4-20mA 0 - MAX.FREQ.[0245]
0-20mA 0 - MAX.FREQ.[0245]
X3/23: Current signal input (Required value 2) 4-20mA 0 - MAX.FREQ.[0245]
0-20mA 0 - MAX.FREQ.[0245]
range of control
zeropoint
max
min
* range signal
+ =
f
f