KROHNE BW 25 EN - Manual (Page 24)

4
ELECTRICAL CONNECTIONS
24
BW25
www.krohne.com 09/2010 - 4000432302 MA BW25 R05 en
4.3.3 M10 switching outputs B1 and B2
The switching outputs are electrically isolated from each other and from the current output.
Switching outputs B1 and B2 can be electrically connected in two ways:
• NAMUR switching output - Ri approx. 1kOhm
• Low-resistance switching output with PNP technology
Switching values
CAUTION!
The switching outputs can only be operating if the power supply is applied to terminals I+ and I-.
M10 - switching outputs
1 NAMUR terminal connection
2 Isolation switching amplifier
3 PNP technology terminal connection
4 Power supply
5 Load
NC contact NO contact
NAMUR OC NAMUR OC
Switching value reached ≤1 mA ≤1 mA > 3mA max. 100 mA
Switching value not reached > 3mA max. 100 mA ≤1 mA ≤1 mA
MA_BW25_R05_en_432302_PRT.book Page 24 Tuesday, September 28, 2010 8:17 AM