6-Wire Connection - Unipulse F159 Operation Manual

2.CONNECTION

2-2-1. 6-wire Connection

F159 input uses an accurate 6-wire load cell connection (remote sense method).
Use shielded 6-core cable for this connection and route it apart from noisy lines
(power and digital devices) and AC power lines.
※ Remote sense method can apply correct voltage to the load cell compensating
2-2-2. 4-wire Connection
F159 is also capable of 4-wire connection, in which case additional jumper
connections between B1 and B2, and B3 and B4 are required. Although the
system may function apparently correctly with B2 and B4 open, this
configuration can produce over-voltage excitation, resulting in over heating and
damage of the load cell. Connect these terminals using the supplied short-bars.
6
Load cell
＋ IN
－ OUT ＋ OUT
－ IN
cable resistance change due to temperature variation along the cable. It is
capable of stabilizing excitation voltage in the vicinity of the load cell.
Load cell
＋ IN
－ OUT ＋ OUT
－ IN
Red
Yellow
Orange
Black
Green
White
Color coding used
in UNIPULSE supplied 6-core cable
Red
Black
Green
White
Short these terminals
Color coding used
in UNIPULSE supplied 4-core cable
B1 ＋ EXC
B2 ＋ S
－ S
B4
－ EXC
B3
＋ SIG
A2
－ SIG
A3
A1 FG
B1
＋ EXC
＋ S
B2
－ S
B4
－ EXC
B3
＋ SIG
A2
－ SIG
A3
A1 FG