PCLD-788 Relay Scanner/multiplexer Board (CE)
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PCLD-788 multiplexes 16 channels into a single I/O channel of an A/D converter, voltmeter or IEEE-488-based instrument. Up to 16 PCLD-788s can be cascaded for a total of 256fully-isolated differential channels. The PCLD-788 can be controlled by any PC-LabCard™ product via a 16-bit 20-pin digital output port, found on cards such as the PCL-711B,PCL-812PG or the PCL-818 series.Channel selection (0-15) and board selection (0-15) are done by programming the high-order four bits and low order four bits of a digital output byte from the main I/O card in use.
Please click the link below to open the PDF datasheet
View Datasheet - 16 to 1 channel expansion
- Differential and fully isolated multiplexing
- Break-before-make relay control
- “Channel closed” signal for precise A/D triggering
- Up to 16 PCLD-788s can be cascaded for 256 channels
- Easy wiring for large channel count configuration
- Onboard cold-junction circuitry for thermocouple measurement
- I/O
- Channel Closed Signal: TTL-level pulse
- Cold-junction Sensor: 24.4 mV/°C, 0 V at 0°C
- Contact Rating: Break-before-make with 3 msec. minimum break time
- Contact Resistance: 200 mΩ max.
- Input Channels: 16 isolated differential inputs
- Programming: DO bit 0, 1, 2 and 3 for channel selection, DO bit 4, 5,
- Max. Input Voltage: 100 VDC or 100 V peak AC
- Max. Switching Current: 0.5 A
- Max. Switching Power: 10 VA
- Operating Time: 1 ms max.
- Relay Life Expectancy: 100 million cycles min. at 10 VDC and 1 mA
- Release Time: 1 msec. max.
- Connectors:
- Dimensions (L x W): 205 x 114 mm (8″ x 4.5″)
- Mounting: 4 x screw holes for flat surface mounting
- Power Consumption: 5 V @ 380 mA max.
Output
6 and 7 for board selection. Onboard DIP switches for
board-address setting
General
Controller: 2 x 20-pin box header, second connector in parallel for
daisy chaining
I/O: Screw terminals
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