Gai-tronics 12579-003 Monitored Relay Module (MRM) Uživatelský manuál stáhnout pdf (Strana 11)

Pub. 42004-716L2C

Model 12579-003 Monitored Relay Module Page

11 of 16

f:\standard ioms - current release\42004 instr. manuals\42004-716l2c.doc

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CAUTION

If ac-powered signaling devices are being used on an output loop configured for Mode 4 (Figure 9),

observe the following limitations necessary for reliable operation for the loop monitoring feature:

 The dc-resistance measured across the loop (with both end-of-line device and the MRM

removed from the loop) must be at least 100 k

 Do NOT use blocking diodes in this loop.

Figure 9. IAC Line Supervision – AC-Powered Beacons

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Gai-tronics 12579-003 Monitored Relay Module (MRM) Uživatelský manuál Strana 11