Danfoss FCM305 56 Instruction Manual page 56

100 Configuration (CONFIG. MODE)
Settings:
Speed,
open loop mode (SPEED OPEN LOOP)
Process,
closed loop mode (PROCESS CLOSED LOOP) [3]
Function:
This parameter is used for selecting the
configuration to which the FCM 300 is to be
adapted.
Description of choice:
If Speed, open loop mode [0] is selected, a normal
speed control (without feedback signal) is obtained,
but with automatic slip compensation, ensuring a
nearly constant speed at varying loads.
Compensations are active, but may be disabled as
required in parameter 133 - 136.
If Process, closed loop mode [3] is selected, the
internal process regulator will be activated, thereby
enabling accurate regulation of a process with
respect to a given process signal. The process
signal can be set using the actual process unit or as
a percentage. A feedback signal must be supplied
from the process, and the process setpoint must be
adjusted. In process closed loop both directions is
not allowed in parameter 200.
NOTE!
This is only possible in Stop Mode (motor stopped on
a Stop command).
101 Torque characteristics
(TORQUE CHARACT)
Settings:
Variable torque: high (VAR.TORQUE: HIGH)
H
Constant torque (CONSTANT TORQUE)
Variable torque: low (VAR.TORQUE: LOW)
Var. torque: medium (VAR.TORQUE: MEDIUM) [3]
Function:
In this parameter, the principle for adjusting the U/f
characteristics of the FCM 300 to the torque
characteristics of the load is selected.
Description of choice:
= General factory setting - also applyng to spare part unit, H H H H H = HVAC setting, I I I I I = Industrial setting, ( ) = parameter
window text. [ ] = value for use in communication via serial communication port
9-2
FCM 300 Series
[0]
If Constant torque [1] is selected, a load-dependent
U/f characteristic is obtained in which the output
voltage is increased in the case of an increasing
load (current) so as to maintain constant
magnetization of the motor.
Select Variable torque low [2], Variable torque
medium [3] or Variable torque high [4] if the load
follows the square law (centrifugal pumps, fans).
NOTE!
Slip compensation (parameter 136) and start
(parameter 134) are not active if a variable torque is
used.
102 Motor power (MOTOR POWER)
Value:
XX.XX kW - depends on the FCM 300
Function:
Read only parameter.
[4]
[1]
103 Motor voltage (MOTOR VOLTAGE)
[2]
Value:
XX V- depends on the FCM 300
Function:
Read only parameter.
104 Motor frequency (MOTOR FREQUENCY)
Value:
XX.X Hz - depends on the FCM 300
MG.03.B6.2G - VLT is a registered Danfoss trademark
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