Volumetric flow controller VAQS
®
08/23 - 13
Construction subject to change.
No return possible!
09.05.2019
Version:
Technical data of the controller
LMV/NMV-D3-MF
(make Belimo)
Dynamic pressure sensor, digital VAV controller and damper
drive VAV-Compact solution
Functional control
LMV/NMV-D3-MF: Functional control
Electrical connection
Apply supply voltage 24 V AC (±10%) to terminals 1 + 2.
Is the polarity of the system neutral conductor correct?
ß
LMV/NMV-D3-MF / ZTH-EU :
Has the ...MV-D3-MF been set to the correct operating mode?
(Check using the connected setting device ZTH EU!)
ß
Drive:
Use the ZTH-EU to set operating mode 2-10 V and connect ter-
minals 1+3 of the LMV-D3-MF.
Does the drive move to the "CLOSED" position?
ß
V
max
:
Connect terminals 2+3 of the ...MV-D3-MF and disconnect U
5
connection to the ZTH-EU.
If the ...MV-D3-MF controls to V
max
- Check actual value signal
U
5
.
Measuring principle :
Pressure reading with volumetric flow
Measuring range of the
sensor :
2... ~ 450 Pa
Supply voltage :
AC 24 V 50/60 Hz; DC 24 V
Functional range :
AC 19.2...28.8 V; DC 21.6...28.8V
Power consumption:
2 W / 3W
Dimensioning :
3.5 VA / 5 VA
Torque :
min. 5 Nm/10 Nm at the rated voltage
Control function :
VAV/CAV/Open-Loop;
Supply/return air or stand-alone operation;
master/slave parallel circuit;
Mixing box control
Setting range
V
min
/V
max
:
V
min
= 0...100% of set V
nenn
volumetric flow
V
max
= 30...100 % of set V
nenn
volumetric
flow
Command variable Y:
(Input resistance min.
100 k
Ω
)
DC 2-10 V (4...20 mA with 500
Ω
input re-
sistance)
DC 0-10 V (0...20 mA with 500
Ω
input re-
sistance)
adjustable DC 0...10 V
Setting range actual val-
ue signal U
5
:
DC 2...10 V
DC 0...10 V
Sensor connection :
Passive (Pt1000, Ni1000, etc.) and active
sensors (0...10 V), for example tempera-
ture, humidity, 2-point signal (switching
power 16 mA @ 24 V), for example switch,
presence detector
Protection class :
III (safety extra low voltage)
Degree of protection :
IP 54 (hose-connected)
EMC:
CE according to 39/336/EEC
Measuring air and ambi-
ent temperatures :
0° C...+50° C, 5...95% rH, non-condensing
Storage temperature :
-20° C...+80° C
Sound power level:
max. 35 dB (A)
Operation and service :
plug-in via service socket / PC-Tool (from
V3.1) / ZTH-EU
Communication:
PP, max. DC 15V, 1200 Baud
Connection :
Cable, 4 x 0.75mm², terminals
Weight:
approx. 500g / approx. 700g
Þ
No:
Check wiring according to the diagram. Check trans-
former power.
→
LMV-D3-MF 5 VA
Þ
Yes: ...MV-D3-MF / ZTH-EU
Þ
No:
Set the operating mode on the ZTH-EU and save it.
→
Operating modes: 0-10 V, 2-10 V
Þ
Yes: Drive
Þ
No:
Contact the VAQS manufacturer
Þ
Yes: V
max
Þ
No:
Check the V
max
potentiometer on the ZTH-EU and
compare the settings with the technical data on the
VAV device.
→
If the drive moves to the "OPEN" position, and
the maximum volume is not reached, then the
duct pressure is too low.
Þ
Yes:
Set the system-specific operating mode on the ZTH-
EU.
