KROHNE CORIMASS E P MFM 2081 EEx EN - Manual (Page 8)

8 Additional Instruction for Ex version MFM 2081 / 3081
(Max. 24 V DC)
V
ext
R
ext
≥
150 mA
Fig. 3: Preferred connections to an external counter with separate power supply
(Example). For correct wiring see tables of input/output connections
(>1200 Ohm)
Fig. 4: Connection without external voltage source (Example). For correct wiring see tables
of input/output connections
Additional input/output options
No. Option 4* Option 5* Option 6
(Current and RS 485) (Current and Modbus) (1 Current, 1 Dual phase pulse
output and input)
5 Common (-) Common (-) Common (-)
6 Current output 1 (+) Current output 1 (+) Current output 1 (+)
4 TX/RX TX/RX Control Input
4.1 TX/RX TX/RX Pulse Output A
4.2 +5V +5V Pulse Output B
No. Option C Option D Option E Option F
(2 Current, Pulse and
Input)
(3 Current and Pulse) (3 Current and Input) (3 Current and Alarm)
5 Common (-) Common (-) Common (-) Common (-)
6 Current output (+) Current output 1 (+) Current output 1 (+) Current output 1 (+)
4 Current output 2 (+) Current output 2 (+) Current output 2 (+) Current output 2 (+)
4.1 Control Input Current output 3
(+)
Current output 3
(+)
Current output 3
(+)
4.2 Pulsee Output Pulsee output Control Input Status output
(passive)
The pulse output and status outputs are passive outputs.
*Refer to separate RS 485 or Modbus manual"