PLZ-4WL
127
Operating Area
App.
If the protection action is set to LIMIT, the PLZ-4WL sinks current as a constant-power load at
point N. Even if you attempt to increase the current, it will not increase beyond point N. If you
decrease the current, overpower protection (OPP) is cleared. The PLZ-4WL returns to
constant current (CC) mode, and the operating point moves along segment MN.
If the overpower protection (OPP) setting is P
N
1
, because overpower protection (OPP) is not
activated as the current is increased, the operating point reaches point S.
At point S, the PLZ-4WL switches to constant voltage (CV) mode. The voltage is fixed at the
user-specified voltage V
Q
. The operating point moves along segment QS. The current is
determined by the voltage and internal resistance of the battery.
Point N
LOAD OFF
The load is turned off (no current flows).
The PLZ-4WL stops operating as a load.
LIMIT
The PLZ-4WL switches out of constant current (CC) mode.
Overpower protection (OPP) continues, and the PLZ-4WL operates
as a constant-power load.