Device overview
140DRA84000C is a Modicon Quantum relay output module with 16 Form A (1 NO) contacts, switching loads up to 1 A at 250 V AC or 30 V DC. It draws 1100 mA from the backplane and requires one output word for addressing. Channel-to-channel and channel-to-bus isolation is rated for 1780 Vrms AC for one minute, with DC bus isolation at 2500 V DC — suitable for separating field circuits from the controller backplane.
Installation and field use
Module occupies one Quantum backplane slot. Sixteen green LEDs indicate output state per channel, one green LED for bus active, one red for external fault detection. Conformal coating (Humiseal 1A33) protects against moisture and condensation. Power dissipation is 5.5 W plus 0.5 W per active output — keep the backplane cooling within spec when all 16 channels are on. Minimum load is 50 mA at 20-250 V AC or 5-30 V DC; below that, contact wetting may be unreliable. Maximum response time from state 0 to 1 is 10 ms, 1 to 0 is 20 ms.
