4 Relay Channels, Latching
The RY2 module features 4 individual single-pole, user SPDT Form C (changeover/break-before-make type) relays (channels). Each channel has a common input terminal (C), a normally closed output terminal (N/C), and a normally open (N/O) output terminal. The channel either energizes or de-energizes the relays (close or open) so that the signal provided on (C) may be switched/directed to either the (N/C) or (N/O) terminals.
The second set of pole contacts is used for the Background Built-in-Test (BIT) status. Interrupts can be enabled/configured for each channel to indicate if a BIT fault (state of secondary set of contacts does not match command) occurs. Internal debounce circuits for each channel provide the required time delay to eliminate false signals resulting from contact bounce commonly experienced with mechanical relays and switches.
RY2 Relay Latching Module: The relays on this module use magnetic latching to assure that once a relay channel is "set" or "reset," the channel will remain at the last commanded position, even if power is removed from the board or the module.
- 4 independently controlled mechanical contact relay channels
- Non-Latching or Latching options (see type/code designator)
- Continuous Background Built-In-Test
- Each channel has Form-C, DPDT contacts; a second Form-C contact set is used for BIT
- Channels: 4 independent, isolated (from each other and system/power ground)
- Switching Voltage: 220 VDC 250 VAC max. (with resistive load)
- Switching Current: 2 A max.
- Switching Power: 60 W/62.5 VA max.
- Initial Contact Resistance: < 50 mΩ
- Contact Type/Material: Bifurcated or PdRu + Au covered
- Operate Time: 1 msec typical, 3 msec max.
- Release Time: 1 msec typical, 3 msec max.
- Bounce Time: 1 msec typical, 5 msec max.
- Initial Dielectric Strength: 1000 Vpk (between open and adjacent contacts) / 1800 Vpk (between contact and coil)
- Surge Withstand Voltage: 1500 Vpk (between open and adjacent contacts) / 2500 Vpk (between contact and coil)
- Capacitance: 2pf (max.) (between coil, adjacent, & open contacts)
- Mechanical Endurance: 1 x 10 operations/cycles (typ.)
- Power: 5 VDC @ 220 mA (estimated typical, all channels energized)
- Ground: Isolated signal/contacts
- Weight: 1.5 oz. (42 g)
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