Fluidic Data; Electrical Data - Burkert 6650 Manuel D'utilisation

4.3 Fluidic data

**
) Observe direction of flow.
Output pressure must
not be higher than input
pressure.
*** In vacuum mode observe
)
permitted differential
pressure.
DN* NC
)
2/2-way NC
Circuit function A
NC
0,4 vak -7 bar
0,8 - **
)
IN
3/2-way universal DN NC
Circuit function T
COM
0,8 vak -1 bar
NC NO
DN NC
3/2-way distributor
Circuit function F
NC NO
0,8 - **
)
COM
The indicated values (power consumption) describe the heat
output. When designing the power supply, pay attention to appro-
priate reserves.
4.5.1 Continuos operation with power reduction
electronics
For the continuous operation of valve type 6650, a power reduction
electronics is required. It is recommended to use the electronics,
which is available as an accessory (see data sheet).
NOTE!
Malfunction due to overheating!
▶ The coil temperature must not exceed 110 ° C.
▶ If required, use suitable power reduction electronics.
▶ For a switch-on time > 50 s (for single mounting > 60 s) always use
a power reduction electronics!
▶ The electronics 670178, available as an accessory, are suitable for
a nominal voltage of 24 V only.
The following graphs provide a guideline for estimating whether a
power reduction electronics is required. If the gap between the indi-
vidual units is < 10 mm, use the graph for the block structure. A power
reduction electronics is not required if the intersection point of switch-
on and switch-off time is in the upper area of the corresponding graph.
8
Block structure
(Pulse / interval ratio at ambient temperature of 22 °C)
1200
1000
800
600
400
200
0
0 5 10 15 20
switch-on time [s]
Example: 6 s on - 40 s off
→ power reduction electronics not required
60
50
40
30
20
10
0
0 1 2 3 4
switch-on time [s]
If the intersection point is on or below the plotted line or if the duty cycle
is longer than 50 seconds, power reduction electronics are essential.
Made in Germany
*
) DN =
Orifice
ΔP max. ***
IN
vak -7 bar 7 bar
vak -3 bar 3 bar
ΔP max. ***
COM NO
vak
vak -1 bar 1 bar
1 bar
ΔP max. ***
COM NO
vak -
- ** 3 bar
)
3 bar
english
25 30 35 40 45 50
5 6 7 8 9 10
4.4 Label / Identification of connections
Example:
Circuit
function
Type
)
Voltage
Identification
number
)

4.5 Electrical data

Connections:
)
Electrical power supply: 12 V, 24 V
Voltage tolerance:
Power input:
Single device
(Pulse / interval ratio at ambient temperature of 22 °C)
Example: 40 s on - 100 s off
→ power reduction electronics required
400
350
300
250
200
150
100
50
0
0 10
7
6
5
4
3
2
1
0
0 0,5 1 1,5
If the intersection point is on or below the plotted line or if the duty cycle
is longer than 60 seconds, power reduction electronics are essential.
In case the Bürkert electronics is not used, but another power
reduction electronics is implemented, the following parameters should
be applied:
in case of a PWM voltage drop:
Duty cycle 33 %, f=20kHz
U
100 %
0
switch-on pulse
Orifice [DN]
Sealing material
Made in Germany
(CC=FFKM
FF = FKM)
6650 T 0,8 CC PK
Housing material
24V-PWM vac-1bar
00189292
(PK=PEEK)
Pressure range
Identification
of the fluid
connections
Type-specific plug-in connector, see data
sheet
± 10 %
Start/activation impulse: 5.7 W
Holding power: 0.7 W
english
20 30 40 50
switch-on time [s]
2 2,5 3 3,5 4 4,5
switch-on time [s]
PWM-signal
switch-off point
20 kHz
5 ms t
english
7
60
5
9