Direct Online
Description
The Direct Online starter requires the following digital inputs and outputs:
-
Two digital inputs for motor local start and local stop.
-
One digital output for motor RUN command CONTACTOR OUTPUT 1.
Wiring Diagram
Example of wiring diagram of the TeSys Tera system in Direct Online mode:
KM1: CONTACTOR OUTPUT 1
Logical Diagram
The following diagram shows the logical diagram of Direct Online starter.
Operating Principle
When Direct Online mode is selected, motor start is possible from one of the following sources:
-
Start command from valid source as per the selected operating mode.
-
Start command from Forced start function.
-
Start command from automatic restart function.
If a start command is received from either of the above source and if the motor is Ready to Start (that is no inhibit cause detected), then TeSys Tera system activates the CONTACTOR OUTPUT 1.
TeSys Tera system deactivates CONTACTOR OUTPUT 1, if any of the following motor stop cause is detected:
-
Stop command from valid source as per the selected operating mode.
-
Stop command from a digital input assigned to Forced stop (optional), refer to Input Assignment .
-
Stop command from automatic restart function.
-
Trip detected
.
DI/DO Default Assignment
When Direct Online starter type is selected, the default assignment and settings of digital inputs and digital outputs are as follows:
|
DI parameters |
DI01 settings |
DI02 settings |
DI03 settings |
DI04 settings |
|---|---|---|---|---|
|
Trigger type |
Active high |
Active low |
Active high |
Active high |
|
Input source |
Local-START> DI |
Local-STOP DI |
Other |
Mode Selection 1 |
|
Validation time |
10 ms |
10 ms |
10 ms |
10 ms |
|
DO parameters |
DO01 settings |
DO02 settings |
DO03 settings |
|---|---|---|---|
|
Active type |
Active high |
Active high |
Active high |
|
Input source |
CONTACTOR OUTPUT 1 |
Alarm Status |
Trip Status |
|
Tag |
CNTR OP 1 |
Alarm DO |
Trip DO |
|
Output type |
Level |
Level |
Level |