4–49

SJ300 Inverter

The alarm output terminals operate as shown below (left) by default. The contact logic can be inverted as shown (below right) by using the parameter setting C036. The relay contacts normally open (N.O.) and normally closed (N.O.) convention uses “normal” to mean the inverter has power and is in Run or Stop Mode. The relay contacts switch to the opposite position when it is in Trip Mode or when input power is OFF.

Contact position after initialization

Contact position inverted by C036 setting

 

 

 

 

 

 

 

 

During normal running

When an alarm occurs or

During normal running or

When an alarm occurs

 

power is turned OFF

power is turned OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AL1

 

 

 

 

 

 

 

 

AL1

 

 

 

 

 

 

 

 

AL1

 

 

 

 

 

 

AL1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AL0

AL2

 

 

 

AL0

AL2

 

 

 

 

AL0

AL2

 

 

 

 

AL0

AL2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Contact

Power

Run

AL0-

AL0-

 

Contact

Power

Run

AL0-

AL0-

State

AL1

AL2

 

State

AL1

AL2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N.C.

ON

Normal

Closed

Open

 

N.O.

ON

Normal

Open

Closed

(after

 

 

 

 

 

(set

 

 

 

 

ON

Trip

Open

Closed

ON

Trip

Closed

Open

initialize,

 

C036=00)

 

 

 

 

 

 

 

 

 

C036=01)

OFF

Open

Closed

 

 

OFF

Open

Closed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operations Monitoring and