Current Sensor Output Connection; Figure 2-5 Shielded Current Sensor Output Connections - Siemens A80850 User Manual

INSTALLATION
2.1.2.1

Current Sensor Output Connection

The current sensor output (J2) is connected using a shielded cable. The shield is
terminated at the current sensor output only as shown in
Figure 2-5. Belden 9939 or equivalent cable is recommended.
USE CARE TO ENSURE THE ELIMINATION OF
ANY FOREIGN ENERGY SOURCES.
ENSURE
CIRCUITS IN THE WIRING BETWEEN THE
CURRENT SENSOR AND THE WIU.
The shielded cable used in connecting the
current sensor output to the WIU device I/O
input has the shield terminated at the output
source (current sensor). The shield is NOT
connected at the WIU I/O to avoid creating a
ground loop. Trim any excess shield wire
flush with the wire insulation. Belden 9939 or
equivalent cable is recommended.
J1

Figure 2-5 Shielded Current Sensor Output Connections

Document No.: SIG-00-11-10
CAUTION
CAUTION
THAT THERE
NOTE
J4
OR EQUIVALENT
J2
J2
CURRENT SENSOR OUTPUTS ARE
J3
OPEN-COLLECTOR TRANSISTORS
(INTERNALLY REFERENCED TO
Version: A.1
ARE NO SHORT
BATTERY
POSITIVE
BELDEN 9939
CABLE SHIELD
SINKING CURRENT
BATTERY NEGATIVE)
2-4
+
IN 3
-
+
IN 2
-
+
IN 1
-
WIU INPUTS