Controlli MVH56EA User manual

Controlli S.p.A.
16010 Sant’Olcese (GE)
Tel. [phone]
Fax. [phone]
www.controlli.eu
MVH56EA/C
Valve Actuators
with Emergency Return Device
Feedback Signal
The actuator utilizes a 2-10V position feedback (look at DIP n. 1 set-
tings).
Calibration
The actuator has both Auto and Manual Stroke Calibration, DIP n.
7. In factory delivery the auto stroke calibration is enabled; manual
calibration is not necessary unless maintenance is required on the
valve or certain alarm functions are desired.
They are provided with a spring device which, in case of power loss,
makes the actuator return to the rest position.
MANUFACTURING CHARACTERISTICS
The actuator consists in a die-cast aluminium housing, which includes
the mounting bracket for connection to valve body.
Reduction gears supported by ball bearings. Movement is transmit-
ted to a rack-and-pinion mechanism connected to the valve stem
through a suitable joint.
Internal electronic card with easily accessible terminals for electrical
connections. Spring return device consisting of a  at spring placed
outside the main shaft.
End Point Auxiliary Switches (accessory DMVH)
End point switches change over when the valve is fully open or clo-
sed. They are free contacts with 24Vac max voltage on terminals.
End point switches can be utilized to indicate valve stroke end posi-
tions and for relay control of additional plant equipment.
When the actuators are controlled individually or in sequence, it is
possible to use the end switches to toggle when the valve is fully
open or fully closed. The auxiliary switch position according to con-
trol signal (Y) is shown in the next table.
MODEL FORCE
[N]
POWER
SUPPLY DESCRIPTION
MVH56EA 700 24Vac/dc
Modulating/oating with
emergency return device
with retracted joint (valve
stem up)
MVH56EC 700 24Vac/dc
Modulating/oating with
emergency return device
with extended joint (valve
stem down)
APPLICATION AND USE
MVH56Ex is a exible electro-mechanical actuator for the control of
two and three way globe valves in:
• Heating and Cooling systems
• Air handling units
• District Heating plants
• Industrial Temperature Control systems.
MVH56Ex can be controlled either by a proportional (modulating)
signal or by an increase/decrease (oating) signal.
It is easy to mount and connect the actuator. Direct mounting is pos-
sible to any CONTROLLI anged valve. Linkage kits are available for
CONTROLLI threaded valves as well as for valves of other manufactu-
rers (contact our technical Dept.). The Actuator has a ne resolution
(500 steps on the full stroke range) for exacting uid control and it is
able to self-calibrate on a different stroke without the need of any
user action (this function is selectable on the eld via DIP switch).
MVH56Ex has intelligent behaviour and alarm functionality in case of
unexpected operation; feedback of alarms to the user is provided
by two LEDs (GREEN and RED) on the control board.
N.B.: Do not use the actuator if not coupled with the valve.
OPERATION
The actuator translates the control signal (modulating or 3 point oa-
ting) from the controller into a valve position. A modern brushless DC
motor in the actuator drive a gear train and a worm gear – screw
jack mechanism convert the motor revolutions into accurate and
repeatable linear movements.
Control Signal
MVH56Ex can be controlled by two main control types.
• 3 point oating ;
• Modulating (or proportional) signal with led selectable range
(e.g., 0-10Vdc, 2-10Vdc, 0-5/2-6Vdc, 5-10/6-10Vdc e 4-20mA.)
1st Issue rev. d 08/2020 DBL465e Page 1
The device contains electrical and electronic components and is not allowed to be disposed
of as household refuse. All locally valid regulations and requirements must be observed.

Analog input Y M
Voltage 0-10V - impedance > 100kΩ
(range: 0-10 2-10 0-5/2-6 5-10/6-10)
500Ω (range 4-20mA)
Digital inputs Y1-Y2
Connection to L1 or Ln when powered
in AC
Connection to Ln only when powered
in DC
Output V+ Voltage 16Vdc ± 0,5V
Max Load 25mA,
Output U Voltage 2-10Vdc (0-100%)
Max Load 2mA
Cable glandes plastic punchable, replaceable by
PG13,5 compression glands
Type of movement linear
Ambient temperature operation -10T60°C
storage -20T60°C
Ambient Humidity max 90% RH
Protection degree
IP55 DIN40050 (IEC 529) for highly
polluted environments according
to IEC 730-1 (93)/6,5,3
Insulation class
Standard Emission/Immunity EMC 2014/30/UE
according to EN 61326-1:2013 standard
Weight [kg] 4
ASSEMBLING
The actuator can be mounted in the positions shown picture below:
It is advisable to use the motorized valve with MVHT spacer, in order
to reduce the actuator working temperature in case of uids at high
temperatures (approximately > 120° C) in the valve body. For uids
over 160 °C avoid mounting the actuator in vertical position on the
valve so as to avoid the direct exposure to heat sources.
For further information look at mounting instructions (MVH56Ex_
DIM262).
MAINTENANCE
The actuator is maintenance-free.
ACCESSORIES
DMVH 2 auxiliary microswitches (SPDT 10 (3) A-250V~) adjustable
on the whole stroke. Microdisconnection type 1B accord-
ing to IEC 730-1(93)/6.4.3.2. It is possible to place the cams
so that the microswitches act according to the required
position. Keep in mind that when the lever is on the cam
protruding part, the contact is closed between b and c
and open between c and a (see gure below).
K1 K2 KC1
End point position
End point position
K3 K4 KC2
OPENING RELAY
CLOSING RELAY
DMVH
Diagnostic
The actuator is provided with a self diagnostic algorithm able to
detect faulty conditions:
• stroke out of range 5-50 mm;
• unexpected stall condition (e.g., valve stuck);
• missing expected stall condition(e.g., link loose);
• voltage supply out of range.
These faulty conditions are signaled via the GREEN and RED LED on
the electronic board blinking accordingly (see “Diagnostic – Alarm
Function Table”).
TECHNICAL CHARACTERISTICS
DESCRIPTION MVH56EA MVH56EC
Supply voltage L1 Ln AC: 24Vac ±20% 50-60Hz
DC:22-30Vdc (Reference Ln)
Power consumption
(running) 13VA/6W
Power consumption
(Holding) 8VA/4W
Running and
emergency return time
(empty)
~ 1 sec/mm
Running and
emergency return time
(loaded)
~ 2 sec/mm
Running time
Modulating
15 s (for valves with stroke from 5 to 15 mm)
25 s (for valves with stroke from 15 to 25 mm)
35 s (for valves with stroke from 25 to 40 mm)
50 s (for valves with stroke from 40 to 50 mm)
Floating 60 s
Transformer Size [VA] 50 60
Stroke 5-50 mm
Force [N] 700 700
Duty cycle max 50%/60 minutes
Control signal (Y) Relay
KC1
Relay
KC2
0-0,5Vdc KC1 to K2 KC2 to K3
0,5-9,5Vdc KC1 to K1 KC2 to K3
9,5-10Vdc KC1 to K1 KC2 to K4
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AG62 Linkage kit for VMB e VSB valves.
248 Stem heater (Suggested when the uid temperature is
lower than -10°C) *
MVHT Valve body-actuator spacer reducing the actuator di-
rect exposure in case of installation with high-tempera-
ture uids. Dimensions: Ø 120mm; h = actuator height +
102mm
GMVHAC Thermal insulation for MVH.A/C actuators *
* It is not possible to install both thermal insulation (Gxxxx) and stem
heaters.
ELECTRIC CONNECTIONS
Carry out the electrical connections by removing the cover, in com-
pliance with the rules in force.
The actuator is equipped with a 8 poles removable terminal block;
the each pole of the plug is clearly marked and the same label are
reported on the electric board. Before powering up the actuator
make sure the plug is properly connected to the board and the label
on the plugs and on the board match.
Terminal block
L1 / Ln
0 V
24Vac/dc
U Y M Y1 Y2
Matching between MVH56Ex terminal block and other Controlli
actuators
Label Description Function Cable type Max wire
Length
L1 24Vac/dc Power
Supply
AWG 16
(min 1mm2-
max 1.5mm2)
75m
Ln 0V
Y 0-10Vdc Modulating
Control
Input
AWG 20
(min 0,5mm2-
max 1.5mm2)
200m
M0V
(Common)
Y1 Open Floating
Control
Input
AWG 20
(min 0,5mm2-
max 1.5mm2)
200m
Y2 Close
V+ 16 Vdc Voltage
Output
max 25mA
AWG 20
(min 0,5mm2-
max 1.5mm2)
200m
M0V
(Common)
U 2-10Vdc Feedback
Output
Signal
AWG 20
(min 0,5mm2-
max 1.5mm2)
200m
M0V
(Common)
3 point oating control (sink connection)
Controller(*)
3-point floating control
(sink connection)
0V
Y2
Ln
MVH
Y1 OPEN
24Vac/24Vdc
L1
CLOSE
3 point oating control (source connection)
3-point floating control
(source connection)
24Vac
0V
Controller(*)
OPEN
CLOSE
MVH
L1
Ln
Y1
Y2
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Modulating control (0-10 Vcc)
COMMAND +
COMMAND -
Controller (*)
MVH
24Vac/24Vdc
0V
Modulating control (0-10Vcc)
L1
Ln
Y
M
N.B: M and Ln signal are internally connected.
(*) MVH56Ex actuators contain a half-wave rectier power supply.
They must not be powered with transformers that are used to
power other devices using not isolated full-wave rectier power
supply.
DIP SWITCHES SETTINGS
Set the DIP switches according to the tables here below. Power
down and power up again the actuator or act on the manual ope-
ration handle to be sure that settings will be recognized.
Factory settings
Dip switch OFF ON
1
MVH56EA
Direct Action Reverse Action
MVH56EC
Reverse Action Direct Action
2
MVH56EA
Modulating Control (MOD) (Input between Y [+] and M
[-])
3 point oating (INC) ( Y1 open , Y2 close connected L1
or Ln if powered in Vacd; if powered in Vdc connected
necessarily to Ln )
MVH56EC
Modulating Control (MOD) (Input between Y [+] and M
[-])
3 point oating (INC) ( Y1 open , Y2 close connected L1
or Ln if powered in Vacd; if powered in Vdc connected
necessarily to Ln )
3-Selection of sequence mode, control range dened by
SW 5
4Modulating Control 0-10Vdc
(DIP n. 2 OFF only)
Modulating Control 2-10Vdc
(DIP n. 2 OFF only)
5
Sequence Control 0-5Vdc with DIP n. 4 OFF only
Sequence Control 2-6Vdc with DIP n. 4 ON only
(DIP n. 3 ON only)
Sequence Control 5-10Vdc with DIP n. 4 OFF only
Sequence Control 6-10Vdc with DIP n. 4 ON only
(DIP n. 3 ON only)
6Voltage Input Signal
(input between Y [+] and M [-])
Current Input Signal 4-20mA (input between Y [+] and
M [-]).
In this case DIP n. 4 must be set to ON.
7
Automatic Calibration: the actuator updates the stroke
range every time an unexpected mechanical stop is
detected for at least 10s
Manual Calibration: the actutor calibration is started
moving the DIP from OFF to ON; if the DIP is left in ON
the actuator will never update the calibrated stroke
value even when an unexpected endpoint is detected
U = 2V
U = 10V
U = 10V
U = 2V
U= feedback
U= feedback
U = 10V
U = 2V
U = 2V
U = 10V
U= feedback
U= feedback
Y1
Y2
Y2
Y1
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DIAGNOSTIC - ALARM FUNCTIONS
N° LED
behaviour Error Actuator use
Actuator Behaviour
Typical trouble
shooting condition
Reset
procedure
Automatic Calibration
DIP N. 7 OFF
Manual Calibration
DIP N. 7 ON
1 RED ON
valve stroke
less than
5mm
Calibration/
rst installation
The actuator
pushes/pulls 5 times
(unexpected stall)
trying to remove the
possible obstacle.
After 5 tries an alarm
is signalled (RED LED
ON) and the actuator
moves to initial
position and does not
respond to control
signal. Stroke value is
not updated because
out of range
The actuator
pushes/pulls 2 times
against endpoint
during calibration.
Alarm is signalled
(RED LED ON) and
the actuator moves
to the initial position
and then it does
not respond to the
control signal
Valve with a
stroke length
lower than 5mm
Remove
power and
power up
again
2 RED ON Stroke longer
than 50mm
Calibration/
rst installation
The actuator exits the
50 mm stroke range
and it moves toward
the new stroke limit
signalling an anomaly
(RED LED ON). The
actuator does not
calibrate the stroke
The actuator
pushes/pulls 2 times
against endpoint
during calibration.
Alarm is signalled
(RED LED ON) and
the actuator moves
to the initial position
and then it does
not respond to the
control signal
Valve with a
stroke length
longer than 50mm
Remove
power and
power up
again
3RED Quick Blinking
+ GREEN ON
Unexpected
stall within the
calibrated
stroke range
normal
operation
The actuator tries 5
times against the new
stall condition and
then after 10s the
actuator updates the
new stroke length;
During these 10s RED
LED is ON
The actuator tries
5 times against the
new stall condition.
At the end of the
attempts the fault
will be signalled
(RED LED ON). The
actuator does not
update the new
stroke length, but
after 60s makes
other attempts
to verify the stall
condition
Valve stuck Inverted
control signal
4RED Quick Blinking
+ GREEN ON
Stroke
longer than
expected
normal
operation
The actuator moves
toward the new stall
condition with a lower
speed; after 10s the
actuator updates
the new stroke value;
During these 10s RED
LED is ON
The actuator moves
toward the new
stall condition with
a lower speed; after
10s the actuator
does not update
the new stroke
value
stem connection
loose or valve
damaged
Inverted
control signal
5 RED slow Blinking Low Power
Voltage
normal
operation
The actuator is
still working but
performance cannot
be guaranteed
The actuator is
still working but
performance
cannot be
guaranteed
1. Wrong
transformer size Correct
Voltage
Power
2. Unstable power
6 RED slow Blinking High Power
Voltage
normal
operation
The actuator is
still working but
performance cannot
be guaranteed
The actuator is
still working but
performance
cannot be
guaranteed
1. Wrong
transformer size Correct
Voltage
Power
2. Unstable power
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STANDARD LEDs
DIMENSIONS [mm]
N° LED ACTUATOR STATUS
1 GREEN ON The actuator arrived at the extreme point of the stroke read
2 GREEN BLINKING The actuator arrived at the intermediate point of the stroke read
3 RED GREEN BLINKING The actuator is reading the stroke or it is going to initial position
4 RED GREEN ON Manual control ON, the actuator ignores the control signal.
ATTENTION! The electronic board is electrically supplied
1st Issue rev. d 08/2020 DBL465e Page 6