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Parameter settings for Danfoss VLT® FMC 300
Local Control Panel

4 - 20 mA signal from pressure transmitter

Local Control Panel for VLT FCM 300

Click on the Control Panel for more info.

  

The parameters used to control the frequency converters may be easily programmed by the user. The [QUICK MENU] button provides a list with a some of the most common parameters. The [MENU] button allows the user to program all parameters.

Johnson Pump Horticulture provides you with this Quick Start guide for optimizing your pump performance.

This guide assumes you are using the Display in Read-out state II.
     
Parameter settings    
Group 0 - Operation & Display    
Param. no. Description Window text Setting Serial port value
002 Local/remote control OPERATION SITE REMOTE 0
009 Display line 2 DISPLAY LINE 2 FREQUENCY [Hz] 4
010 Display line 1.1 DISPLAY LINE 1.1 REFERENCE % 1
011 Display line 1.2 DISPLAY LINE 1.2 FEEDBACK [UNIT] 3
012 Display line 1.3 DISPLAY LINE 1.3 ANALOG INPUT 1 [mA] 30
         
Group 1 - Load & Motor    
Param. no. Description Window text Setting Serial port value
100 Configuration CONFIG. MODE PROCESS CLOSED LOOP 3
101 Torque characteristics TORQUE CHARACT VAR. TORQUE: LOW 2
         
Group 2 - References & Limits    
Param. no. Description Window text Setting Serial port value
200 Rotation direction ROTATION 132 Hz CLOCKWISE 0
201 Min. output frequency MIN OUTPUT FREQ 0.0 Hz 0
202 Max. output frequency MAX OUTPUT FREQ 50 Hz 50000
204 Min. reference MIN. REFERENCE 0 HZ 0
205 Max. reference MAX. REFERENCE 50 Hz 50000
207 Ramp-up time 1 RAMP UP TIME 1 15.00 sec. 1500
208 Ramp-down time RAMP DOWN TIME 1 15.00 sec. 1500
215* Preset reference 1 PRESET REF. 1 16.67% 1667
* Parameter 215: 16.67% is approx. 100 mbar (0% = 0 mbar, 100% = 600 mbar)
         
Group 3 - Inputs & Outputs    
Param. no. Description Window text Setting Serial port value
331 Terminal 1, analogue input current AI [mA] 1 FUNCT FEEDBACK 2
332 Terminal 2, analogue/digital input DIGITAL INPUT 2 NO OPERATION 0
334 Terminal 4, digital input DIGITAL INPUT 4 START 7
336 Termianl 1, min. scaling AI 1 SCALE LOW 4.0 mA 40
337 Terminal 1, max. scaling AI 1 SCALE HIGH 20.0 mA 200
340 Terminal 9, output functions (output is activated by Alarm 24 V DC signal) OUTPUT FUNC. FAULT 6
         
Group 4 - Special Functions    
Param. no. Description Window text Setting Serial port value
414 Minimum feedback MIN. FEEDBACK 0.000 0
415 Maximum fedback MAX. FEEDBACK 600.000 600000
416 Reference/feedback unit REF/FEEDB. UNIT bar 4
440 Process PID proportional gain PROC. PROP. GAIN 1.00 100
441 Process PID integral time PROC. INTEGR. T. 10.00 sec. 1000
         
All other parameter settings --> factory default setttings
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Troubleshooting
Not working?
Parameter 620 [OPERATION MODE]/[INITIALIZE] can be used to rest all parameters to the default factory settings.
Procedure for intitialisation:

  1. Select initialisation (parameter 620)
  2. Press [OK]
  3. Disconnect mains power supply and wait for the light in the display to go out
  4. Reconnect to mains
  5. Initialisation of alll parameters will be carried out
  6. Reprogram the above parameters
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Wiring diagram
wiring diagram for VLT FCM 300 4-20mA pressure signal

The pressuretransmitter must be connected as showed in the diagram.

The connection between terminal 4 and 6 can be replaced by a contact from the controller.

Attention!
P1 of the transmitter is connected to the Supply.
P2 of the transmitter has to be connected to the Return.


To check if the transmitter is connected correctly:

  1. Press [DISPLAY MODE]
  2. Three values are shown in the display; parameter settings 010, 011 and 012.
  3. The value to the right must be 3,8/3,9 mA while the pump is not running. When this value is 0 mA while the pump is not running, the transmitter is connected wrong or the transmitter is not working. When the value is 21 mA while the pump is not running, the pressure difference is more then 600 mbar or the transmitter is not working.

When the transmitter is connected correctly, press [START].

  1. The pump wil run and the value to the right will increase till 6,5 mA (100 mbar).
  2. The value in the middle will swing around 100 mbar (measured value transmitter).
  3. The value to the left will be 100 (PRESET REF 215 ).
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PDF downloads

FCM 300 Quick Guide 4-20 mA pressure signal (88 kB PDF)

FCM 300 button functions, Display modes and general programming (128 kB PDF)