Burkert Type 0250 - Manual (Page 15)

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0250 - 15
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1 ) pause time with change of rotation 0.4 s.
2 ) increased wear with continuous operation of the motor.
3 ) limited gas seal
4 ) impurities (e.g., fluff etc.) should be pre-filtered, otherwise the function of the valve could be impaired.
5 ) at 24 V dc smoothed. pulsed drive increases the rotation time (see also 8) )
6 ) higher currents considerably reduce the service life!
7 ) higher temperatures limit the max. power loss of the potentiometers.
8 ) min. pulse duration (the pulse duration increases for no-load / under load/pressure): approx. 100 ms
direction of rotation depending on polarity
rotation time for 100 % 5) approx. 7 s at 24 V dc, depending on load
electrical connection round plug according to din 43651
(6-pole and earth)
position feedback potentiometer 1 kΩ linear
(optional 5 kΩ linear and conducting
plastic design)
protective resistance rs = 6.8 kΩ
resistance change approx. 55 ... 75 % (at 100 % rotation path)
of potentiometer
max. slider current standard design: ≤ 4 ma
of potentiometer conduction plastic design: ≤ 65 µa 6)
max. power in 0.5 W / 40 °c
potentiometer 7)
rated operating 24 V dc
voltage 8)
Voltage tolerance ±10 %
power consumption 3 W
electrical data
note Max. number of operations = 400,000 under laboratory conditions,
20 °c and 1 s operation time for each through the complete rotation
range.