61
CAUTION
Improper wiring or setting may cause failures. Recheck the setting
before starting one-control operation.
If the load cables of a slave unit are disconnected, excessive voltage is
applied to the slave unit instantaneously and a
“HArd” alarm occurs.
Check if the cables are connected properly. Repair improper
connection. The master unit displays the total current. If the actual
value is remarkably different form the set current and/or output current,
improper power may possibly be set in the setting shown in Section
“5-5-10. Master-slave function”. Recheck the set power.
While single control parallel operation, current indication of the master unit
may fluctuate largely due to influence of load wire resistance. In such case,
use optional connection kit, OP-21A (Horizontal Installation Connection
Kit), OP-21B (Vertical Installation Connection Kit) or a low impedance load
wire.
Use PSF-400L as a master unit in case of single control parallel operation
with PSF-400L and PSF-800L.
+O
U
T
-O
U
T
Master unit
F
.G
（
F
ra
m
e
g
ro
u
n
d
)
Load
ー
＋
+grounding
-grounding
+S
+O
U
T
-O
U
T
-S
J1
J2
+O
U
T
-O
U
T
Slave unit 1
F
.G
（
F
ra
m
e
g
ro
u
n
d
)
+S
+O
U
T
-O
U
T
-S
J1
J2
+O
U
T
-O
U
T
Slave unit 2
F
.G
（
F
ra
m
e
g
ro
u
n
d
)
+S
+O
U
T
-O
U
T
-S
J1
J2
+O
U
T
-O
U
T
Slave unit 3
F
.G
（
F
ra
m
e
g
ro
u
n
d
)
+S
+O
U
T
-O
U
T
-S
J1
J2
OP-22P
OP-22P
OP-22P
Fig.6-1 Parallel Connection
