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SCU 1284 Relays


Leakage voltage on relays


I/Net Seven versions using SCU 1284's.


There is a small leakage current through the integrated MOV transient suppressor across the NC and NO contacts on the four relays that are used to control the door locks.


If the relay is connected to a very high impedance (electronic) device input where it is falsely detecting as a relay ON condition, there are two things that can be done:

1. Place a 10,000 Ohm resistor on the device input to ground (or relay output to ground)

2. Move to one of the other unsuppressed relays ( relay 3, 4, 7 or 8)

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Last update:
‎2018-09-06 01:16 PM
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