Belimo ZEV Technical Data Manual

Adjustment tool with PP interface

Products no longer available

for VAV controller

• Nominal voltage AC/DC 24 V

• Peer-to-peer connection
to VAV controller via

– U/PP connection
– Service socket
– Connection terminals

Brief description

Applications

Technical data sheet ZEV

The ZEV adjustment tool enables the operating volumetric flow settings in VAV and CAV sys­tems with conventional control to be adjusted on site. It is not suitable for systems with an MP
bus connection.

Can be used with

– NMV-D2, VRD2, VRD2-L
– LMV-D2M, NMV-D2M
– LMV-D2-MP, NMV-D2-MP, SMV-D2-MP 2)
– LHV-D2M 2)

3)

1)

2)

3)

Technical data

Connection

Supply

VAV-Compact

VAV-Universal

Electrical data

Safety

Dimensions / weight

The ZEV is connected to the VAV-Compact using the PP (peer-to-peer) interface of the VAV
controller.
As well as using the service socket on the VAV-Compact, it is also possible to connect the ZEV
to easily accessible connection points such as the service plug on the CR24-B room tempera­ture controller or on the terminals in the control cabinet. This means there is no need for direct
access to the VAV controller.

The 24 V supply to the ZEV comes via the service socket of the VAV, CR24 controller or from a
local 24 V supply, e.g. connection terminals of the VAV controller.

The VAV-Compact devices do not have any operating elements such as switches or setpoint
potentiometers. If necessary, the operating parameters are set using the ZEV or another adjust­ment tool, e.g. the PC-Tool with additional functions such as trend, etc.

In the VRD2(-L), it is possible to set the mode appropriately for the selected 0…10 V or 2...10 V
room temperature controller.

1)

Mode setting 0 ... 10 V / 2 ... 10 V

2)

See mode setting

3)

Devices manufactured before 8/2006 need a modified scale sticker

Nominal voltage AC 24 V, 50/60 Hz, DC 24 V
Power supply range AC 19.2 ... 28.8 V, DC 21.6 ... 26.4 V
Power consumption 1 W
PP communication DC 1.0/12.5 V max. DC 15 V

bidirectional 1200 baud
Connection Screw terminals for 2 x 1.5 mm2
Connection cable separate obtainable, see «Accessories» on page 4

Protection class III Safety extra-low voltage
Degree of protection IP42
EMC CE according to 89/336/EEC
Ambient temperature range 0 ... +50 °C
Non-operating temperature range -20 ... +80 °C
Moisture test According to EN 60730-1
Dimensions See «Dimensions» on page 3
Weight Approx. 500 g

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ZEV

VAV adjustment tool

2 / 4 T4-ZEV • en • v1.3 • 09.2007 • Subject to changes www.belimo.com

~

T

T

5 5 1

U/PP

AC 24 V

T

~

1 2 3 4

– + DC 24 V

T

PP

1
2
3
5

Y
U

~

T

51 2

AC 24 V

T

~

– + DC 24 V

51 2

1
2
3
5

Y
U

~

T

51 2

AC 24 V

T

~

– + DC 24 V

!

!

Products no longer available

Safety notes

Electrical installation

Note

Connection via safety transformer!

• The device is not allowed to be used outside the specified field of application, especially in
aircraft or in any other airborne means of transport.

• Only for Belimo VAV devices with 24 V safety extra-low voltage.

Wiring diagrams

The ZEV is connected to connections 1 and 5 of the correspond­ing controller. The ZEV supply (AC/DC 24 V) comes directly from
connection 2.
When the system is being wired up, it is advantageous for the
actual value signal U5 (terminal 5) of the VAV controller to be fed
back to the room temperature controller or into the control cabinet.
Communication is via a peer-to-peer connection (PP).

Connection options

Note

• When an operating device (e.g. ZEV) is con­nected via the U/-PP connection (terminal 5) of
the VAV controller, the voltage signal of output
U5 does not correspond to the current actual
value signal.
When using the service socket of an LMV-D2­MP, NMV-D2-MP or SMV-D2-MP, the U5 signal
is not impaired.

• The maximum communication level is DC 15 V.
To prevent damage to third-party equipment, it
may have to be disconnected from terminal 5
under certain circumstances – for the duration of
communication.

Connection via service socket (Cable see «Accessories» on page 4)

blue

turquise

ZK5-GEN ZKS-VAV

LMV-D2-MP / NMV-D2-MP / SMV-D2-MP
LHV-D2-MP

Connection via connection terminals

violet

Service socket

black

red

CR24-B..

white

– Device terminals / connection socket
– Switch cabinet terminals

LMV-D2M / NMV-D2
LMV-D2-MP / NMV-D2-MP / SMV-D2-MP
LHV-D2-MP
VRD2 / VRD2-L

ZEV

?



MIN



MAX

LED

?



MIN



MAX

set

?



MIN



MAX

LED

LED

Products no longer available

Operation

Structure

Note

ZEV devices manufactured before 8/2006 need a
modified scale sticker. Please contact your Belimo
branch.

Operation Query Programming

VAV adjustment tool

A B

C D

Operating volumetric flow 

A

Operating volumetric flow 

B

Mode setting for reference and volumetric flow actual value signal

C

Functional check of control loop nominal/actual value comparison

D
E

Reset 

min.

-/ 

setting to original OEM values

max.

min

max

E

for VRD2(-L), NMV-D2,

LMV-D2M, NMV-D2M

for LMV-D2-MP, NMV-D2-MP,

SMV-D2-MP

Leg

end

Yellow LED lights up

LED dark

Turn the rotary button slowly until
the check LED lights up.
– Flashing LED:

Value in VAV controller is lower

– LED dark:

Value in VAV controller is higher

Turn the rotary button slowly until
the check LED flashes.

LED Vmin

LED Vmax

3 - 4s

– The following flashing sequence indica-

tes that the value in the VAV controller is
greater.

LED Vmin

LED Vmax

3 - 4s

Set the value at the corresponding rotary button:
Press and hold the «Set» button for 2 seconds. The
write procedure is acknowledge by the LED lighting
up (see application table on page 4).

Set the value with the corresponding rotary button:
Press the «Set» button repeatedly until the following
flashing sequence indicates that the value has been
accepted.

LED Vmin

LED Vmax

3 - 4s

– LED dark:

Value in VAV controller is higher.

Functional checkVAV control loop

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Green LED lights up
Green LED flashes
– Dark
– Bright

→ Actual value same as nominal value
→ Actual value not same as nominal value
→ Volumetric flow not reached
→ Volumetric flow too high

ZEV

4.5

130

140

153

45

43

88

5

54

Products no longer available

Dimensions [mm]

Dimensional diagrams

Application with different VAV versions

VAV adjustment tool

Version LMV-D2-MP

VRD2

VRD2-L

Note

1)

Technical data

Nominal voltage AC 24 V, 50/60 Hz

Connection of operating devices



setting

min.

setting



max.

Mode

Feedback LED «Mode» LED lights up The set mode is not displayed on the LED but the

Reset operating volumetric flow setting

Range

Range 30 ... 100% of 

Range Constant

min./max.

Current device Phased out by NMV-

Terminals

«Mode» LED lights up

No function Reset to (OEM) factory setting

No function Reset to (OEM) factory setting

NMV-D2 LMV-D2M

NMV-D2M

Phased out by NMV-D2-

D2M in 2000

MP in 2006

LMV-D2-MP
NMV-D2-MP

NMV-D2-MP
SMV-D2-MP

SMV-D2-MP

Current device

Terminals Terminals, socket Terminals, socket

0 2) ... 100% of 

Constant 4) / 2 ... 10 V / 0 ... 10 V

0 2) ... 100% of 

max

30 ... 100% of 

4)

/ 2 ... 10 V / 0 ... 10 V

nom

nom

The set mode is not displayed on the LED but the

write command

write command

5)

5)

is performed correctly

is performed correctly

to original factory setting

Functional check

Control loop

w = x Green LED lights up

w ≠ x Green LED flashes

Green LED lights up

Green LED flashes

5)

nom

3)

Communication

Normal LED function Data transmission

Normal LED function Data transmission is

is displayed by brief

displayed by brief flash-

flashes of the three

es of the three LEDs

5)

LEDs

1)

See product information for VAV-Compact and VAV-Universal

2)

Lowest setting depends on the creep flow suppression. See VAV product information documents or refer to data from the VAV manufacturer.

3)

ZEV devices (manufactured before 8/2006) need a modified scale sticker. Please contact your Belimo branch.

4)

The "Constant" option is irrelevant for the current VRD2, L/NMV-D2M and L/N/SMV-D2-MP versions.

5)

If the LED constantly displays low-power "dark" flashes (> 3 min), this means the actuator is most probably at a limit position.

Accessories

Type Use

Cable

4 / 4 T4-ZEV • en • v1.3 • 09.2007 • Subject to changes www.belimo.com

ZK5-GEN for new generation VAV-Compact, LMV-D2-MP, NMV-D2-MP, SMV-D2-MP, LHV-D2-MP
ZKS-VAV for LMV-D2M, NMV-D2M, CR24-A.., CR24-B..