KROHNE IFC 110 Converter - Manual (Page 16)

Sect. 2.1 Part A System installation and start-up
16 IFC 110 F 05/2003
2 Electrical connection: outputs and inputs
IMPORTANT!
For EEx versions, also pay regard to all directions included in Sect. 6.1 and 13.
Only the EEx flow sensor may be installed in the hazardous area. The EEx
certified signal converter must be installed outside the hazardous area!
2.1 Important information for outputs and inputs …….…………. PLEASE NOTE !
• The signal converter has the following outputs and inputs:
Output and
Symbol Terminals Remarks
input group
Power output I I
S
/ I active / passive selectable
Current output P P / P for electronic totalizers
Pulse output A1* (P2) A1* / A ⊥ for electromechanical totalizers
Status outputs A1* and A2 A1* / A ⊥ / A2 A ⊥ common centre grounding contact
Status outputs D1 and D2 D1 / D ⊥ / D2 D ⊥ common centre grounding contact
Control inputs C1 and C2 C1 / C ⊥ / C2 C ⊥ common centre grounding contact
Internal power supply E E+ / E- for active mode of outputs and inputs
* Output A1 can be used as a 2nd pulse output P2 for electromechanical totalizers or as a
4th status output, see Section 4.4, Fct. 3.07 HARDWARE.
• The output and input groups are electrically isolated from each other and from all other input
and output circuits.
• Please note:
A ⊥ common centre grounding contact for outputs A1 and A2
D ⊥ common centre grounding contact for outputs D1 and D2
C ⊥ common centre grounding contact for control inputs C1 and C2
• Active mode:
the signal converter supplies the power for the operation (selection) of
receiver instruments, observe max. operating data (terminals E+ and E-).
• Passive mode:
the operation (selection) of receiver instruments requires an external
power supply (U
ext
), observe max. operating data.
• Connection diagrams of outputs and inputs are shown in Section 2.6.
• For operating data of outputs and inputs please refer to Sections 2.6 and 10.1.