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ADPRO Presidium by Xtralis
Installation and User Manual
Doc. 12384_05
39
Figure 30: Access/Secure Input Configuration
3.9.2 Fault Relay
Presidium has a fault relay, which is a Form C single pole changeover contact, available on pins
3, 4 and 5 of the General Inputs / Outputs connector. The relay has the following behaviour.
Table 3: Fault Relay
In the case of an over-temperature situation (standard Presidium only), the fault relay will
indicate a fault condition and the unit will turn off, but no front panel LEDs will be illuminated. A
hard power cycle must be performed to restart the unit. Refer to
Specifications
on page 89 for the
relay specifications.
Unit State
Normally Closed (FLT NC)
Pole
Normally Open (FLT NO)
Pole
Power Off (Status LED is off)
Open
Closed
Unit powered on and is booting, i.e. the Status
LED is on
Open
Closed
Operating Normally (Status LED is off)
Closed
Open
Any system fault is detected (Status LED is
on)
Open
Closed
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