問題:
If you restore the primary inputs on an ECO422/D while it is currently switched to the backup inputs+ will it automatically switch back to primary?
答案:
The behavioral logic of the ECO422D is described in table 2-3 on page 2-8 of the ECO422D user manual (also shown below). One general rule of thumb is that the unit will NEVER automatically switch to a bad signal; it can only switch to a bad signal if told to do so by the user.
As shown on line 4 of the table below, if both the primary and backup signals are good, no preference is given to either and the unit will not switch back to the primary; the change back to primary must be manually applied by the user.
| Ln. # | Power | User Config Mode | Switch Button | Primary is… | Backup is… | Output (auto mode) | Output (manual mode) | 
| 1 | On | Normal | No Switch | Bad | Bad | No Switch | No Switch | 
| 2 | On | Normal | No Switch | Bad | Good | Backup | No Switch | 
| 3 | On | Normal | No Switch | Good | Bad | Primary | No Switch | 
| 4 | On | Normal | No Switch | Good | Good | No Switch | No Switch | 
| 5 | On | Normal | Switch | Bad | Bad | Switch | Switch | 
| 6 | On | Normal | Switch | Bad | Good | Backup | Backup | 
| 7 | On | Normal | Switch | Good | Bad | Primary | Primary | 
| 8 | On | Normal | Switch | Good | Good | Switch | Switch | 
| 9 | On | Override | No Switch | Bad | Bad | No Switch | No Switch | 
| 10 | On | Override | No Switch | Bad | Good | Backup | No Switch | 
| 11 | On | Override | No Switch | Good | Bad | Primary | No Switch | 
| 12 | On | Override | No Switch | Good | Good | No Switch | No Switch | 
| 13 | On | Override | Switch | Bad | Bad | Switch | Switch | 
| 14 | On | Override | Switch | Bad | Good | Backup | Switch | 
| 15 | On | Override | Switch | Good | Bad | Primary | Switch | 
| 16 | On | Override | Switch | Good | Good | Switch | Switch | 
| 17 | Off | n/a | n/a | n/a | n/a | Primary | Primary | 
此常見問答集適用於:
沒有任何產品系列
產品:
常見問答集 ID 63751
檢視所有常見問答集 »