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What happens if the primary inputs fail+ and THEN the secondary inputs fail on an ECO422/D?

问题:

What happens if the primary inputs fail+ and THEN the secondary inputs fail on an ECO422/D?

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 1 of the table below, if both inputs are bad, no switch will occur and the unit will continue with whatever set was last selected (in this case the secondary inputs). Again, this scenario demonstrates the rule that the unit will never switch to a bad signal.

Ln. #PowerUser Config ModeSwitch ButtonPrimary is…Backup is…Output (auto mode)Output (manual mode)
1OnNormalNo SwitchBadBadNo SwitchNo Switch
2OnNormalNo SwitchBadGoodBackupNo Switch
3OnNormalNo SwitchGoodBadPrimaryNo Switch
4OnNormalNo SwitchGoodGoodNo SwitchNo Switch
5OnNormalSwitchBadBadSwitchSwitch
6OnNormalSwitchBadGoodBackupBackup
7OnNormalSwitchGoodBadPrimaryPrimary
8OnNormalSwitchGoodGoodSwitchSwitch
9OnOverrideNo SwitchBadBadNo SwitchNo Switch
10OnOverrideNo SwitchBadGoodBackupNo Switch
11OnOverrideNo SwitchGoodBadPrimaryNo Switch
12OnOverrideNo SwitchGoodGoodNo SwitchNo Switch
13OnOverrideSwitchBadBadSwitchSwitch
14OnOverrideSwitchBadGoodBackupSwitch
15OnOverrideSwitchGoodBadPrimarySwitch
16OnOverrideSwitchGoodGoodSwitchSwitch
17Offn/an/an/an/aPrimaryPrimary

此常见问题适用于:

产品系列: 同步脉冲发生器

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常见问题 ID 64081

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