When you use an external 24 V power supply, the drive detects an alarm as shown in Table 1 if you set o2-23 [External 24V Powerloss Detection] and o2-26 [Alarm Display at Ext. 24V Power] for the main circuit power supply. Set the alarm display as necessary.

Table 1. Power Supply and Alarm Display

Main Circuit Power Supply

External 24 V Power Supply

o2-23

[External 24V Powerloss Detection]

o2-26

[Alarm Display at Ext. 24V Power]

Alarm Display

ON

ON

-

-

-

ON

OFF

0 [Disabled]

-

-

1 [Enabled]

-

L24v [Loss of External Power 24 Supply]

OFF

ON

-

0 [Disabled]

“Ready” LED light flashes quickly

-

1 [Enabled]

EP24v [External Power 24V Supply]