Read the supplier manual "BU 0180" for the VFD when setting the operating
mode for a VFD variants B-E.
11.2.4 Special VFD parameter settings for DMX
•
Some parameters have been adapted to DMX pumps. These parameters differ from the de-
fault settings mentioned in the supplier manual for the VFD.
•
Do not change the special parameter settings of the VFD for operation with DMX pumps.
•
When resetting the VFD to default settings, the special parameter settings for DMX will be
overwritten. The special parameters must be set again.
Mandatory settings
•
Do not set P506, "automatic fault acknowledgement", to 6, "always". In case of an active er-
ror, such as leakage to earth or short circuit, the VFD will restart continuously and cause
damage to the system because P428 is set to 1, "on".
•
Do not change the following settings as this may lead to malfunction of the DMX pump with
VFD.
Basic parameters
Code
Parameter
Value for DMX
P102
Startup time
5 s
P105
Maximum frequency
100 Hz
Control terminals
Code Index Parameter
Value for DMX
P400 -02
Setpoint input function. Analog input 2 (AIN 2)
01 = Setpoint frequency
P401 -01
Analog mode ON. Analog input 1 (AIN 1)
2 = 0-10 V, monitored
P401 -02
Analog mode ON. AIN 2
2 = 0-10 V, monitored
P402 -01
Adjustment: 0 %. AIN 1
1.36 V
P402 -02
Adjustment: 0 %. AIN 2
1 V
P403 -02
Adjustment: 100 %. AIN 2
5 V
P420 -01
Digital input function. Digital input 1 (DIN 1)
02 = Enable left (left-handed
rotation)
P420 -02
Digital input function. Digital input 2 (DIN 2)
19 = Setpoint 1 on/off
P420 -03
Digital input function. Digital input 3 (DIN 3)
20 = Setpoint 2 on/off
P428
Automatic starting after power supply has been
switched OFF
1 = On (enable with level)
*1
The minimum frequency for the VFD is set to approx. 5 Hz.
Extra functions
Code Parameter
Value for DMX
P504
Pulse frequency
8 kHz
P540
Mode phase sequence
3 = only counter-clockwise (CCW) direction of rotation.
Modifications of other parameters and adaptation of the inputs and outputs can be made by
means of the optional "parameter box" or the "NordCon" software. Read the supplier manual "BU
0180" for the VFD provided with the product.
DMX 221 | |
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