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6.4. Label / Identification of
connections
Example:
Circuit
function
Made in Germany
Type
6650 T 0,8 CC PK
24V-PWM vac-1bar
00189292
Voltage
Identification
number
6.5. Electrical data
Connections:
Type-specific plug-in connector,
see data sheet
Electrical power supply: 12 V, 24 V
Voltage tolerance:
± 10 %
Power input:
Start/activation impulse: 5.7 W
Holding power: 0.7 W
The indicated values (power consumption) describe
the heat output. When designing the power supply, pay
attention to appropriate reserves.
english
12
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
20
switch-on time [s]
7
6
5
4
3
2
1
0
0
0,5
1
1,5
2
switch-on time [s]
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.
english
14
Orifice [DN]
Sealing material
(CC=FFKM
FF = FKM)
Housing material
(PK=PEEK)
Pressure range
Identification
of the fluid
connections
30
40
50
60
2,5
3
3,5
4
4,5
5
6.5.1. 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!
• 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 individual 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.
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.
In case the Bürkert electronics is not used, but another
power reduction electronics is implemented, the following
parameters should be applied:
Type 6650
english
13
13
25
30
35
40
45
50
5
6
7
8
9
10
english
15
15
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