PCIe-IIRO Series

The PCIe-IIRO series is a x1 lane PCIe isolated digital input and relay output board with Change of State (COS) detection capabilities.

The isolated inputs can be driven by either AC or DC and are not polarity sensitive. Input signals are rectified by a diode bridge and applied to the inputs of opto-isolators. A 1.8k ohm resistor in series provides current limiting. Standard 12/24 AC control transmitter outputs can be accepted as well as DC voltages. The input voltage range is 3V to 31VDC (or 40-10kHz RMS). To extend the input voltage range, you may connect external resistors in series.

The electro-mechanical relay outputs of the PCIe-IIRO-16 are comprised of ten form C SPDT outputs and six form A SPST (normally-open) type. The relays are all de-energized at power-on. Data to the relays is latched.

The card is 6.6 inches in length and 4.2 inches seated height. I/O wiring connections for this board are via a 37-pin D-sub connector for the 8 port version and a 78-pin D-sub connector for the 16 port unit. A molded round-wire “Y” cable is typically used to connect the 16 port unit to termination panels with two 37-pin D-sub connectors.

Digital Inputs

• Number of inputs: 8/16
• Type:Non-polarized, optically isolated from each other and from the computer. (not TTL/CMOS compatible)
• Voltage Range: 3 to 31V DC or AC (40 to 10 kHz)
• Isolation: 500V*(see manual) channel to channel and channel to ground
• Input Resistance: 1.8k ohms in series with two diodes and a photo-coupler LED
• Response Time: 10 mSec w/filter, 20 uSec w/o filter

Relay Outputs

• Number of outputs: 8/16
• Contact Rating: 2A carry current, bifurcated, gold clad, silver palladium
• Contact Arrangement: Channels 0-4 and 8-12 are SPDT Form C; channels 5-7 and 13-15 are SPST Form A.
• Contact Rating: Initial 100 milliohms maximum
• Contact Life: mech’l: 5 million operations minimum; elect’l: 5 million operations minimum at full load
• Operating Time: 2 milliseconds maximum
• Release Time: 1 milliseconds maximum
• Regulatory Approvals: UL and CSA

Interrupts

• Interrupts enabled by software, generated when digital inputs change state

Key Features:

• Switchable filters on inputs for electrically noisy environments
• Optically isolated channel to channel and channel to ground
• Can detect input state change and assert interrupt
• Automatically detected under Windows
• 8/16 optically isolated inputs & 8/16 electro-mechanical relay outputs