Hydro-Unit Mcmf; Hydro-Unit Pumpdrive 2 Eco - DP Megacontrol Series Installation And Operating Instructions Manual

9.5

Hydro-Unit MCMF

ATTENTION
See factory settings 3-2-2-1
Figure 15: 1 pump operation, 1 pump variable
Figure 16: 2 pump operation, 2 pump variable
Figure 17: 3 pump operation, 3 pump variable
The Hydro-Unit MCMF is equipped with multiple
variable frequency drives. If the Hydro-Unit is
rotation-controlled, the required system pressure is
sensed by a pressure sensor on the outlet side of the
installation. An integrated adjustable PID-controller in
the software of the Megacontrol ensures that the
system pressure remains constant by successively
switching on or off one or more (whether or not)
9.6

Hydro-Unit PumpDrive 2 Eco

ATTENTION
See factory settings 3-2-2-1
rotation-controlled pumps with delay. A pump is only
switched on when 100% or respectively 0% of the
speed has been reached.
Table 20: Specific parameter settings MCMF
Parameter
3-3-1 Number of pumps
3-3-2 Inlet
3-3-3 Discharge
3-4-3-1 Communication
3-4-3-2 Proportional const.
3-4-3-3 Integral time.
3-4-3-4 Differential time.
3-4-3-5-1 No flow bandwidth
0-1000 kPa
0-2500 kPa
3-4-3-5-3 No flow step
3-4-3-9 VFD Ramp-Up
3-4-3-10 VFD Ramp-Down
3-4-3-11 VFD min. frequency
3-4-3-12 VFD max. frequency
3-4-3-13 P nominal of VFD
3-4-3-14 U nominal of VFD
3-4-3-15 F nominal of VFD
3-4-3-16 I nominal of VFD
3-4-3-17 RPM nominal of VFD
3-5-1 Set point
3-5-3 Bandwidth
3-5-4 Accumulation press.
3-5-13 Low pressure alarm
3-6-1 Opt. pump starts/h
3-6-2 Min. run time
3-6-3 Min. run time corr.
3-6-8 Run-dry delay
Value
1
2
3
4
5
6
Switch
Pressure
Level / valve ON-OFF
Level / valve prop.
VFD fixed all
Danfoss VLT 2800
Danfoss MicroDrive
Danfoss AquaDrive
3
0.9
0
6
16
1
3
3
30
160
1500 See VFD
400 See VFD
50/60
4 See VFD
2880 See motor name
plate
.... kPa
10
30 kPa
100 kPa
30
1 s
0 s
Default 30 s
Float/level control 1 s
21