KROHNE OPTISONIC 7300 EN - Manual (Page 33)

ELECTRICAL CONNECTIONS
4
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OPTISONIC 7300
www.krohne.com 09/2012 - 4001102303 - MA OPTISONIC 7300 R03 en
4.6.3 Pulse and frequency output
• All outputs are electrically isolated from each other and from all other circuits.
• All operating data and functions can be adjusted.
• Passive mode:
External power supply required: U
ext
≤ 32 VDC
I ≤ 20 mA at f ≤ 10 kHz (override up to f
max
≤ 12 kHz)
I ≤ 100 mA at f ≤ 100 Hz
• Active mode:
Use of the internal power supply: U
nom
= 24 VDC
I ≤ 20 mA at f ≤ 10 kHz (over range up to f
max
≤ 12 kHz)
I ≤ 20 mA at f ≤ 100 Hz
• NAMUR mode: passive in accordance with EN 60947-5-6, f ≤ 10 kHz,
over range up to f
max
≤ 12 kHz
• Scaling:
Frequency output: in pulses per time unit (e.g. 1000 pulses/s at Q
100%
);
Pulse output: quantity per pulse.
• Pulse width:
symmetric (pulse duty factor 1:1, independent of output frequency)
automatic (with fixed pulse width, duty factor approx. 1:1 at Q
100%
) or
fixed (pulse width adjustable as required from 0.05 ms...2 s)
• Forward / reverse flow measurement (F/R mode) is possible.
• All pulse and frequency outputs can also be used as a status output / limit switch.
INFORMATION!
Depending on the version, the pulse and frequency outputs must be connected passively or
actively or according to NAMUR EN 60947-5-6! Which I/O version and inputs/outputs are
installed in your signal converter are indicated on the sticker in the cover of the terminal
compartment.
CAUTION!
At frequencies above 100 Hz, shielded cables must be used to prevent radio interference.
INFORMATION!
For further information refer to Connection diagrams of inputs and outputs on page 36
.
DANGER!
For devices used in hazardous areas, additional safety notes apply; please refer to the Ex
documentation.