[d] = Electricity interruption in days
[s] = Pre-charging time in seconds
PF[s] = Bridging time
Calculation example: In the event of an electricity
interruption of 3 days and a set bridging time (PF) of 5 s, the
actuator requires a pre-charging time of 14 s (see graphic)
after the voltage has been reconnected.
Typical pre-charging time
0
0
5
10
15
20
25
30
2
4
6
8
10
12
0 s
5 s
2 s
10 s
0
5
10
15
20
25
30
[s]
[d]
0
1
2
7
≥10
0
5
8
10
15
19
2
6
9
11
16
20
5
8
11
13
18
22
10
12
15
17
22
26
[s]
[d ]
[s
]
PF
[s]
PF
Delivery condition (capacitors)
The actuator is completely discharged after delivery from the factory, which is why the
actuator requires approximately 20 s pre-charging time before initial commissioning in
order to bring the capacitors up to the required voltage level.
Converter for sensors
Connection option for a sensor (passive or active sensor or switching contact). In
this way, the analogue sensor signal can be easily digitised and passed along to
LONWORKS®.
Integrated temperature controller
The actuator has an integrated temperature controller (Thermostat Object LONMARK®
#8060). This makes it easy to implement individual room control solutions.
Adjustable-parameter actuators
The factory settings cover the most common applications. Individual parameters can
be altered with the BELIMO service tool MFT-P or with the service tool ZTH-GEN.
Direct mounting
Simple direct mounting on the globe valve by means of form-fit hollow clamping jaws.
The actuator can be rotated by 360° on the valve neck.
Manual override
Manual override with push-button possible - temporary. The gear is disengaged and
the actuator decoupled for as long as the button is pressed / latched.
The stroke can be adjusted by using a hexagon socket screw key (5 mm), which
is inserted into the top of the actuator. The stroke spindle extends when the key is
rotated clockwise.
High functional reliability
The actuator is overload protected, requires no limit switches and automatically stops
when the end stop is reached.
Combination valve/actuator
Refer to the valve documentation for suitable valves, their permitted medium
temperatures and closing pressures.
Position indication
The stroke is indicated mechanically on the bracket with tabs. The stroke range
adjusts itself automatically during operation.
Home position
Setting ex-works: Actuator spindle is retracted.
When valve-actuator combinations are shipped, the direction of motion is set in
accordance with the closing point of the valve.
Direction of stroke switch
When actuated, the direction of stroke switch changes the running direction in normal
operation.
The direction of stroke switch has no influence on the emergency setting position
(POP) which has been set
AVK24ALON
Globe valve actuator, communicative, modulating,
AC/DC 24 V, 2000 N
Product features
www.belimo.com
AVK24ALON
• en-gb • 2013-04-03 • Subject to modification
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