FläktGroup eQ Controls SK62 Installation and Maintenance Manual

Brand: FläktGroup

Model: eQ Controls SK62

Type: Installation and Maintenance Manual

FläktGroup DC_8785GB 20180228_R0 Speciﬁcations are subject to alteration without notice

CONTROL EQUIPMENT

STAZ-16, STBZ-16

INSTALLATION AND MAINTENANCE INSTRUCTIONS

ELECTROHYDRAULIC VALVE ACTUATOR SKB62

For type VVF31 and VXF31 valves with a 20 mm lift in heating, air

handling and cooling systems for the regulation of heating and cooling

water.

TECHNICAL/MECHANICAL CONFIGURATION

When the control signal is increasing (0...10VDC/0...1000 Ω) the

hydraulic pump that is built into the actuator pumps oil from the

suction chamber into the pressure chamber. As a result of this the

valve stem is forced inwards and the valve opens.

When the control signal is decreasing (0...10VDC/0...1000 Ω) the return

valve opens and the hydraulic oil in the pressure chamber is forced

to ﬂow back to the suction chamber by the pressure of the return

spring built into the actuator. As a result of this the valve stem is forced

outwards and the valve closes.

The actuator has a factory ﬁtted fail safe function, i.e. if the control

signal or supply voltage are interrupted the actuator returns to the 0

position.

• Maintenance free electrohydraulic actuator.

• Swing piston pump in the pressure cylinder for opening the valve.

• Return spring and return valve for closing the valve.

• Equipped with a fail safe function.

• Position for integrating double auxiliary contacts and a lift stroke

limiter.

• Can be equipped with a stem heater.

• Equipped with a manual adjustment knob and position indication.

CONTROL SIGNAL DC 0...10 V AND 0...1000 Ω

The valve opens or closes in proportion to the control signal at Y or R.

At a control signal of 0 VDC or 0 Ω the valve is closed (A → AB).

SELECTING A CONTROL CURVE

A logarithmic or linear ﬂow characteristic can be selected using a

blade contact in the circuit board under the housing. The actuator

electronics are supplied set to a logarithmic ﬂow characteristic.

CE MARKING

EMC in accordance with 89/336/EEC

LVD in accordance with 73/23/EEC

010 V

100

420 mA

Y, RU

Y, R

lin

01000

Ω

Recirculation

Actuator

Valve

=DC 0...10 VV=Flow

0...1000 ΩV100 =Flow 100 %

V0= Flow 0 %

DC 0 ... 10 V

lo =Logarithmic

control curve

Lift (valve)=

lin=Linear control curve

(factory setting)

RELATIONSHIP BETWEEN CONTROL SIGNAL

DC 0...10 V AND FLOW:

Installation and maintenance instructions

FläktGroup DC_8785GB 20180228_R0 Specifications are subject to alteration without notice

CALIBRATION POTENTIOMETER

The calibration potentiometer is used to obtain conformity between the

supply voltage and valve lift. The potentiometer need only be adjusted

when the voltage on terminal U is being used for external indication,

e.g. for an indication device, management system or for position-de-

pendent switching.

Lift height 0%: permissible voltage on terminal U = min. DC 0.03... max.

0.4 V.

INSTALLATION

Installation must be carried out in accordance with local regulations

and in accordance with the apparatus and connection diagrams.

Safety instructions and constraints for the protection of personnel and

property are to be observed unconditionally!

The stem heater ASZ6.5 has a heat output of 30 VA and will keep the

valve stem free of ice at temperatures in the range 0 °C...-25 °C.

To ensure air circulation the actuator console and stem must not be

insulated. Touching heated components can cause burns. The failure

to comply with these instructions can result in accidents and a risk of

ﬁre!

Observe the permitted temperatures!

ASSEMBLY

There are instructions for ﬁtting the actuator onto the valve on the

actuator enclosure.

MOUNTING POSITIONS

2 mm

AInställningsskruv

BSexkantnyckel 2 mm

netujkstu tleh gnilppoKnegardni tleh gnilppoK

Coupling fully retracted Coupling fully extended

tillåtet tillåtet tillåtet tillåtet ej tillåtet

permitted not permitted permitted permitted not permitted

A Adjustment screw

B Allen key 2 mm

COMMISSIONING

When commissioning check the electrical connection and carry out a

functional inspection.

Check or make the adjustments for auxiliary contacts, the potentiome-

ter and lift stroke limiter.

If the manual crank is turned anti-clockwise to its stop position, the

Landis & Staefa VVF and VXF type valves will close (lift = 0 %).

AUTOMATIC OPERATION

For automatic operation the crank must be fully recessed into the

manual adjustment knob. If this is not the case turn the crank an-

ti-clockwise until neither the adjustment scale nor the crank engage-

ment bar can be seen in the display window.

MANUAL OPERATION

For manual operation lift the crank so that the display window is visi-

ble. By turning the manual adjustment knob or the crank the engage-

ment bar and/or adjustment scale with the lift indicator will become

visible in the display window.

DISPOSAL

Equipment containing electrical and electronic components that must

not be disposed of as household waste. This applies in particular to

the printed circuit board. Statutory regulations or ecological demands

require the separate handling of speciﬁc components.

Applicable local legislation must always be observed.

Installation and maintenance instructions

FläktGroup DC_8785GB 20180228_R0 Specifications are subject to alteration without notice

TECHNICAL DATA

Power supply AC 24 V ± 20 %

Frequency 50 Hz or 60 Hz

Power consumption 18VA

Signal input, terminal Y 0...10 VDC, max. 0.1 mA

Signal input, terminal R 0...1000 Ω

Signal output, terminal U 0...10 VDC

Runtime (open/closed) 120 s

Emergency closure time 15 s

Positioning force 2,800 N

Lift 20 mm

Permissible ﬂuid temperature -25...+220 °C

Cable lead-ins 4 x Pg 11

Ingress protection class IP 54

Weight without packaging 8.4 kg

Weight with packaging 8.7 kg

Actuator housing and console Die cast aluminium

Plastic

HOUSING AND MANUAL ADJUSTMENT KNOB

ACCESSORIES

Stem heater for ﬂuids below 0°C. Installation between the valve and

actuator.

Power supply 24 VAC ±20%

Power consumption 30 VA

MAINTENANCE

The actuators are maintenance free. To service the actuator:

• Disconnect all pumps and the power supply.

• Close all shut-off valves in the pipework.

• Depressurise the lines and let them cool down.

• If necessary disconnect the electrical wiring from

the terminal blocks.

• The actuator can only be taken into service again

when it has been correctly installed on the valve.

1Tryckcylinder

2Kolv

3Pump

4Returfjäder

5Returventil

6Koppling

7Handomställare

8Lägesindikator (0…1)

1Handomställare

2Koppling för ventilspindel

3Lägesindikator (0…1)

4Stativ

1Tryckcylinder

2Kolv

3Pump

4Returfjäder

5Returventil

6Koppling

7Handomställare

8Lägesindikator (0…1)

1Handomställare

oppling för ventilspindel

3Lägesindikator (0…1)

4Stativ

GO GYRMU

24 V

5Anslutningsklämmor

6Kontaktdon för val av reglerku

rva«

lin

» /«

log»

7Plats för lyfthöjdsbegränsare

ASZ62.63

8 Plats för hjälpkontakt

ASC1.6

Permitted ambient

conditions

Operation

IEC 721-3-3

Transport

IEC 721-3-2

Storage

IEC 721-3-1

Ambient conditions Class 3K5 Class 2K3 Class 1K3

Temperature -15...+55 °C -30...+65 °C -15...55 °C

Relative humidity 5...95 % RF < 95 % RF 0...95 % RF

1 Pressure cylinder

2 Piston

3 Pump

4 Return spring

5 Return valve

6 Coupling

7 Manual adjustment knob

8 Position indicator (0…1)

1 Manual adjustment knob

2 Coupling for valve stem

3 Position indicator (0…1)

4 Console

5 Connection terminals

6 Connector for selecting control curve « lin » / « log »

7 Position for lift stroke limiter ASZ62.63

8 Position for auxiliary contact ASC1.6

Installation and maintenance instructions

FläktGroup DC_8785GB 20180228_R0 Specifications are subject to alteration without notice

CONNECTION DIAGRAM

The connection diagrams show how the actuators can be connected.

Which diagrams and how many actuators depends on the relevant

installation.

AC 24 V, DC 0...10 V och/eller 0...1000 Ω

Y...

GY RU

1P1N

AC 24 V

DC 0...10V

0...1000

Ω

RM F1

G Y(Y') RMU

R-M

DIMENSIONS

235

Ø44 76

127

147

89 137

375*

Pg11

Pg16**

Snitt A

Ø178

Ø24

Ø10/Ø14

* The height of the actuator from the valve plate without stroke inverter ASK51 = 375 mm

The height of the actuator from the valve plate with stroke inverter ASK51 = 432 mm

 = > 100 mm, minimum distance to wall or roof

 = > 200 mm, connection, operation, maintenance etc.

AC 24 V, DC 0...10 V and/or 0...1000 Ω

Section A

WIRING DIAGRAM

G, G0 Supply voltage AC 24 V

G System potential (SP)

G0 System neutral (SN)

Y Control signal input for DC 0...10 V signal

Y` Control signal input for DC 0...10 V V signal (only

for an integrated lift stroke limiter ASZ62.6)

R Signal input for a position indicator or for a frost

protection device with a 0...1000 Ω signal

M Measuring neutral

U DC 0...10 V measuring signal output (at Y=DC

0...10 V and/or R=0...1000 Ω) or DC 4...20 mA

measuring signal output (at R=DC 4...20 mA)

*) The jumper designated R – M on the circuit

board must be cut when terminal R is controlled by 0...1000 Ω

FläktGroup eQ Controls SK62 Installation and Maintenance Manual

FläktGroup eQ Controls SK62 Installation and Maintenance Manual

FläktGroup eQ Controls SK62 Installation and Maintenance Manual

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