Unipulse F805AT-BC, Operation Manual

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4.SIGNAL CONNECTION
17
4-1-2. 4-wire load cell connection
For use with 4-wire connection, make two short-circuits inside the connector shell
(between pins 1-2, 4-3). Using 4-wire connection with these terminals open will create
a significant measuring error, even if the system may appear to functioning properly.
＋ IN
－ OUT
－ IN
Load cell
＋
EXC
＋ S
－
S
－ EXC
＋
SIG
－ SIG
SHIELD
＋ OUT
1
2
3
4
5
6
7
These jumpers MUST be connected
CAUTION
●
The F805AT-BC can be used only in category II specified by EN61010.
The overvoltage applied to the signal input/output terminals should not exceed the
value defined in category II.
●
The F805AT-BC conforms to the EMC Directive as an industrial environment product
(class A). If it is used in a housing environment, interference may be caused. In that
case, take appropriate measures.
●
The load cell excitation voltage of the F805AT-BC is 5V or 10V. Heating or breakage
may occur unless the load cells maximum excitation voltage is the load cell excita-
tion voltage of the F805AT-BC or more.
●
When using the F805AT-BC with the four-wire load cell connected, be sure to
cEXC and +S, and -EXC and -S. Even if +S and -S are not connected,
normal operation is performed apparently, but heating or breakage may occur
because excessive voltage is applied to the load cell.