KROHNE IFC 110 Converter EN - Manual (Page 17)

05/2003 IFC 110 F 17
2.3.2 Pulse output A1 for electromechanical totalizers (EMC)
PLEASE NOTE:
The output terminal A1 can be used as status output A1 or as a 2nd pulse output A1 for
electromechanical totalizers.
Setting is as described in Fct. 3.07 HARDWARE, see Sections 4.4 and 5.18.
• Pulse output A1 is electrically connected to status output A2 (common centre grounding
contact A ⊥) but electrically isolated from all other circuits.
• Setting data and functions can note down in the Table in Sect. 3.
Please also refer to Section 2.7 ”Standard factory settings”.
• All operating data and functions are adjustable, see Sections 4.4 and 5.7, Fct. 1.07.
• Active mode:
uses the internal power supply, terminals E+/E-
• Passive mode: requires external power supply, U
ext
≤ 32V DC/24V AC, I ≤ 100mA
(I ≤ 200mA for polarized DC operation, see Section 6.3)
• Max. adjustable frequency 50 kHz
• Scaling
in pulses per unit of time (e.g. 10 pulses/s at Q
100%
flow) or
in pulses per unit of volume (e.g. 10 pulses/m³ or US Gal).
• Pulse width
symmetric, pulse duty factor 1:1, independent of output frequency,
automatic, with optimum pulse width,
pulse duty factor approx. 1:1 at Q
100%
, or
pulse width range from 0.01 to 1 s adjustable as required for
correspondingly lower output frequency.
• Forward/reverse flow measurement (F/R mode) is possible, see Section 5.15.
• Connection diagrams see Section 2.6
• Schematic wiring diagram for pulse output A1 for electromechanical totalizers EMC.
This pulse output has a MOSFET switch as output which switches direct and alternating
voltages similar to a relay contact.