16
Loop-powered Isolator
K3FP-SN1-I-I/K3FP-SN2-I-I
Dimensions
Note:
All units are in millimeters unless otherwise indicated.
Precautions
Refer to pages 38 and 39 for common precautions.
■
Precautions for Correct Use
Operation
Passive Loop-powered Isolators draw the power required for isolation
from the input signal.
Here, you must confirm that the current sourcing voltage of the
measuring transducer U
B
is sufficient to drive the maximum current
of 20 mA via the Loop-powered Isolator with a voltage drop U
V
of
1.7 V and a load R
B
.
Thus:
U
B
≥
U
E
= 1.7 V + 20 mA
×
R
B
93.1
6.2
102.5
K3FP-SN1-I-I
K3FP-SN2-I-I
Note: 1.
Use solid wire with a diameter
of 2.5 mm
2
max. or bar
terminals with insulation
sleeves for terminal
connections.
To preserve dielectric strength
after connection, the length of
the exposed conductive part
inserted into the terminal must
be 12 mm max.
2.
Screw Tightening Torque
Recommended torque:
0.5 N·m
12 mm max.
12 mm max.
For 2.5-mm
2
(max.)
solid wire:
For bar terminals with
insulation sleeves:
U
V
= 1.7 V
K3FP-SN1-I-I
