Daikin DKN-MG400 Manual Del Usuario página 5

Installation Instructions
(EN)
A. Applicable Products
These installation instructions apply to the actuators detailed wihtin the
table.
B. Mechanical Installation
1. Push valve stem down.
2. Slide actuator onto valve bonnet.
3. Operate manual override to position actuator screw jack over the
valve stem.
4. Allow 1mm clearance.
5. Remove actuator from valve.
6/7. Screw on square nut flush onto valve stem.
8. Slide actuator onto valve bonnet.
9. Slide u-bolt into position.
10. Secure u-bolt and actuator with flanged nuts.
11. Tighten valve stem nut.
C. Mounting
Refer to diagram for mounting orientation according to media tempera-
ture (Tº).
D. Cover Removal
The cover is not hinged. Lever cover off actuator as shown; a flat-head
screw driver may be required. Observe how the body and cover fit
together along the edges. When replacing, first align the back edge
of the body and cover, then tilt down the front and snap the cover into
position.
E. Electrical Connection
Observe terminal markings and maximum cable lengths.
NOTE: Avoid removing the PCBA board.
Terminal Function
G 24 Vac/Vdc
G0 24 Vac/Vdc return
X1 Input
MX Input, neutral
VH Increase
VC Decrease
G1 16± 0.3 Vdc, 25
mA
Y 0...100% (2...10
Vdc)
F. Manual Override
Flipping down Manual override lever disconnects power to the PCBA.
G. Dipswitch Configuration
There are nine switches in a row on the circuit board. On delivery ('Fac-
tory'), all switches are in the "OFF" position.
Guide to Dip Switch Settings
NOTE: For DKN-MG400 versions only: 0% / 60 s, 300 s / 50% has a
double function, see 6b below..
NOTE: For the actuator to register new settings of the switches, the sup-
ply voltage must be cut or the manual operation handle lowered, the
settings done, and then the handle raised again (this does not apply to
the switch OP/ADJ).
1 Valve Closing Screw Direction—IN / OUT. IN direction of movement is
used when the screw of the actuator moves inwards to close the valve.
OUT direction of movement is used when the screw of the actuator
moves outwards to close the valve. Feedback signal Y follows the valve
closing screw direction.
2 Control signal—MOD / INC/DEC. Forta can either be controlled by a
variable direct voltage, a so called modulating signal (MOD), or by an
© 2021 Daikin Refrigeration Malaysia. All rights reserved.
Document Number: F-28181-1
Description
Supply Voltage
Modulating Control signal
Floating/Digital Control signal (VH,
VC short-circuited to G0)
Short circuit-safe supply
Feedback signal (reference to G0)
increase/decrease signal (INC).
3 Sequence or parallel control— –– – / SEQ. With sequence (or
parallel) control (SEQ), two actuators/valves can be controlled by only
one control signal. For each of these you can choose which part of the
voltage range to use, the upper one, 5...10 V (6...10 V) or the lower one,
0...5 V (2...6 V).
If the switch NORM / INV is in the NORM position, the higher voltage
corresponds to 100% flow and the lower one to 0%.
With NORM / INV in the INV position you will get the opposite function.
NOTE: If sequence or parallel control is not used, the switch – – – / SEQ
must be in the OFF position, as the switch MOD / INC is not valid during
sequence or parallel control.
4 Voltage range 0...10 / 2...10. You can choose whether to use the
control signal voltage range 0...10 V or 2...10 V.
5 Part of voltage range - 0...5, 2...6 / 5...10. 6...10. You can choose
which part of a voltage range to use, the lower one 0...5 V (2...6 V) or the
upper one 5...10 V (6...10 V).
If the switch is in the NORM position, the higher voltage corresponds to
100% flow and the lower one to 0%. To achieve the opposite function,
the switch should be put in its INV position.
6 Running time—60 s / 300 s. With increase/decrease control, you
can choose a running time between 60 s or 300 s. With modulating
control, the running time is always 15 s / 20 s / 30 s (or 60 s, for DKN-
MG400 versions only).
6b Security function—0% / 50% (DKN-MG400 versions only). At 2...10
V control signal you can select which security function you want the
actuator to have. If the actuator is used for heating control and switch 6
is ON (50%), the actuator will open the valve halfway if the control signal
disappears, e.g. if the X1 connection is unplugged. If you want the valve
closed set switch 6 to OFF (0%).
7 Direction of movement—NORM / INV. When normal direction of
movement is used, the screw of the actuator moves inwards when the
control voltage decreases or if the actuator gets a decrease signal. With
the switch NORM / INV, the direction of movement can be changed.
Refer to drawing "Control direction according to Switch 7 (Normal /
Inverse)."
8 Linearization—NORM / LIN/LG. The motorized valve characteristics
can be modified. If you wish for the characteristics to be affected, the
setting LIN/LG will make the characteristics of an equally modified
percentage (EQM) valve almost linear. On the other hand, with LIN/
LG a motorized valve equipped with a linear valve will operate with
"Quick open characteristics." This means that with a small control
signal, the valve will be almost completely open.
9 End position adjustment—OP / ADJ. This switch is only used to adjust
the end positions when the actuator is commissioned. Momentarily put
the switch in the ON position. The actuator will automatically find the
end positions of the valve.
Agency Listings
UL873: Underwriters Laboratories (File #E9429 Category Temperature
Indicating and Regulating Equipment)
CUL: Listed for use in Canada by Underwriters Laboratory. Canadian
Standards C22.2 No. 24.
European Community: EMC Directive: (2004/108/EC).
Australia: This product meets requirements to bear the RCM Mark ac-
cording to the terms specified by the Communications Authority under
the Radio Communications Act of 1992.
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February, 2021 tc