6-20 Terminal 54 Low Voltage
Range:
-10.0 - par. 6-11 .................................................. * 1.00V
This analog input scaling value should corres-
pond to the minimum output value of the pres-
sure sensor
6-21 Terminal 54 High Voltage
Range:
6-10 to 10 V ......................................................... * 5.00V
This analog input scaling value should corres-
pond to the maximum output value of the pres-
sure sensor.
6-22 Terminal 54 Low Current
Range:
0.0 to par. 6-13 mA ......................................... * 4.0mA
This reference signal should correspond to the
minimum output value of the pressure sensor.
6-23 Terminal 54 High Current
Range:
6-12 to 20 mA ................................................* 20.0mA
This reference signal should correspond to the
maximum output value of the pressure sensor.
6-24 Terminal 54 Low Ref./Feedb.
Value ....................................................................-1 (bar)
6-55 Terminal 54 High Ref./Feedb.
Value ....................................................................12 (bar)
Parameters: Controllers
7-0* Speed PID Ctrl.
Parameters for configuring the speed PID control.
Parameters fully dedicated to the internal speed
control : Read only.
7-00 Speed PID Feedback Source
Option:
*Motor feedb. p.1-02 ............................................... [0]
7-02 Speed PID ProportionalGain
Compressor dependent, factory set : read only
7-03 Speed PID Integral Time
Compressor dependent, factory set : read only
7-04 Speed PID Differentiation Time
Compressor dependent, factory set : read only
7-05 Speed PID Diff Gain Limit
Compressor dependent, factory set : read only
7-2* Process Ctrl. Feedb.
Select the feedback sources for the Process
PID Control, and how this feedback should be
handled.
7-20 Process CL Feedback 1 Resource
No function ................................................................. [0]
Analog input 53 ........................................................ [1]
*Analog input 54 ....................................................... [2]
Frequency input 29 (FC 302 only) ...................... [3]
Frequency input 33 .................................................. [4]
For process loop with current input, 54 switch has
to be positionned on I (current).
7-30 Process PID Normal/ Inverse Control
Option:
Normal .......................................................................... [0]
*Inverse ........................................................................ [1]
Inverse action has to be selected for a process
loop using a suction pressure sensor to control
the system.
7-31 Process PID Anti Windup
Option:
Off ................................................................................... [0]
*On ................................................................................. [1]
Function:
Select
Off
[0] to cease regulation of an error when
the output frequency can no longer be adjusted.
Select
On
[1] to continue regulation of an error
even when the output frequency cannot be in-
creased or decreased.
7-32 Process PID Start Speed
Set point .....................................................3000 [RPM]
Function:
Enter the motor speed to be attained as a start
signal for commencement of PID control. When
the power is switched on, the frequency converter
will commence ramping and then operate under
speed open loop control. Thereafter, when the
Process PID start speed is reached, the frequency
converter will change over to Process PID control.
7-33 Process PID Proportional Gain
Range:
0.00 - 10.00 N/A ............................................ *2.00N/A
Function:
Enter the PID proportional gain. The proportional
gain multiplies the error between the set point
and the feedback signal.
7-34 Process PID Integral Time
Range:
0.01 - 10000.00 ....................................................*9.00s
Function:
Enter the PID integral time. The integrator provides
an increasing gain at a constant error between
the set point and the feedback signal. The integral
time is the time needed by the integrator to reach
the same gain as the proportional gain.
7-35 Process PID Differentiation Time
Range:
0.00 - 10.00 s .........................................................*0.00s
Function:
Enter the PID differentiation time. The differen-
tiator does not react to a constant error, but pro-
vides a gain only when the error changes. The
shorter the PID differentiation time, the stronger
the gain from the differentiator.
Note: This PID parameters are confortable to start
any system, but depending on its design they
have to be adjusted to follow the inertia and all
responses of the the real refrigeration machine.
Parameters: Special Functions
Parameter group for configuring special frequen-
cy converter functions.
14-0* Inverter Switching
Parameters for configuring the inverter switching.
14-01 Switching Frequency
3.5 kHz ........................................................................... [5]
14-03 Overmodulation
Option:
Off ................................................................................... [0]
*On ................................................................................. [1]
Function:
Select
On
[1] to connect the overmodulation func-
tion for the output voltage, to obtain an output
voltage up to 15% greater than the mains voltage.
Select
Off
[0] for no overmodulation of the out-
put voltage, in order to avoid torque ripple on the
motor shaft. This feature may be useful for appli-
cations such as grinding machines.
14-1* Mains On/Off
Parameters for configuring mains failure monito-
ring and handling.
14-12 Function at Mains Imbalance
Option:
Trip .................................................................................. [0]
*Warning ..................................................................... [1]
Disabled ....................................................................... [2]
Function:
When a severe mains imbalance is detected:
•
Select
Trip
[0] to trip the frequency converter;
•
Select
Warning
[1] to issue a warning; or
•
Select
Disabled
[2] for no action.
Operation under severe main imbalance condi-
tions reduces the lifetime of the motor. Condi-
tions are considered severe if the motor is opera-
ted continuously near nominal load.
14-2* Trip Reset
Parameters for configuring auto reset handling,
special trip handling and control card self test or
initialisation.
14-20 Reset Mode
Automatic reset x 10 .............................................[10]
Function:
Select the reset function after tripping. Once
reset, the frequency converter can be restarted.
Select
Manual reset
[0], to perform a reset via
[RESET] or via the digital inputs.
Select Automatic reset x 1.x20 [1]-[12] to perform
between one and twenty automatic resets after
tripping.
NB: If the specified number of AUTOMATIC RE-
SETs is reached within 10 minutes, the frequency
converter enters Manual reset [0] mode. After the
Manual reset is performed, the setting of par. 14-
20 reverts to the original selection. If the number
of AUTOMATIC RESETs is not reached within 10
minutes, or when a Manual reset is performed, the
internal AUTOMATIC RESET counter returns to zero.
The motor may start without warning.
14-21 Automatic Restart Time
Range:
0 - 600 s .....................................................................*30s
Function:
Enter the time interval from trip to start of the
automatic reset function. This parameter is active
when par. 14-20 is set to Automatic reset.
14-22 Operation Mode
Option:
*Normal operation ......................................................0]
Control card test ........................................................ [1]
Initialisation ................................................................ [2]
Function:
Use this parameter to specify normal operation; to
perform tests; or to initialise all parameters except par.
15-03, 15-04 and 15-05. This function is active only
Instructions
20 | AN000086420674en-000201
© Danfoss | DCS (CC) | 2019.04
