KROHNE BW 25 EN - Manual (Page 18)

4
ELECTRICAL CONNECTIONS
18
BW25
www.krohne.com 09/2010 - 4000432302 MA BW25 R05 en
If the measuring pointer vane goes into the slot an alarm is triggered. If the pointer vane lies
outside the slot sensor, a wire break also causes the alarm to be triggered.
The 3-wire limit switch does not have any wire break detection
Current consumption in the position shown:
Switch contact definition
1 MIN contact
2 MAX contact
3 Pointer vane with switching vane
Definition MinMin - MaxMax
1 MIN 2 contact or MAX 1 contact
2 MIN 1 contact or MAX 2 contact
Contact Type Current
MIN 1 NAMUR ≤ 1 mA
MIN 2 NAMUR ≤ 1 mA
MAX 1 NAMUR ≥ 3 mA
MAX 2 NAMUR ≥ 3 mA
MA_BW25_R05_en_432302_PRT.book Page 18 Tuesday, September 28, 2010 8:17 AM