60
(4) HARD alarm
This alarm is displayed in the following conditions.
Over-voltage (OVP)
Output is turned off if the voltage exceeds 110% of the
rated output voltage.
Over-current (OCP)
Output is turned off if the current exceeds 110% of the
rated output current.
Alarm using external
contacts ALARM
Alarm is caused when the contacts are short-
circuited. For details, see Section
“5-7-5. Alarm
function using external contacts
” above.
Display in case of HARD alarm
6-2. One-Control Parallel Operation (excluding PSF-400L2)
The PSF Series power supply units are capable of one-control parallel
operation of up to four units, including the master unit. When
executing one-control parallel operation using master units, the master
and slave units should be set properly in advance.
◆
For the setting procedures, see Section
“5-5-10.
Master-slave function
” above. Connect the master and slave units with
the optional parallel signal cables OP-22P. The parallel connection kit
for horizontal installation OP-21A, parallel connection kit for vertical
installation OP-21B and joint kit JK-10 are also available by option.
Use these kits as the necessity requires.
The sum of the master unit current and slave unit current is displayed
on the master unit.
◆
See Section 2
“SPECIFICATIONS” for the displayed items and
setting resolution in one-control operation.
The current displayed on the master unit is the sum of the current of the
master and slave units.
Output depends on the master unit. When the OUTPUT key of the
master unit is thrown, outputs of the slave units are turned on
automatically.
