Emerson CPC810-3065 MultiFlex 168+AO I/O Board
Product Introduction
The Emerson CPC810-3065 expands your control system’s I/O capacity significantly. This board belongs to the MultiFlex family and offers 16 combination analog/digital input points. Each point can accept either an analog sensor (like a temperature or pressure transmitter) or a dry contact digital signal. Additionally, the board provides 8 relay outputs for direct control of loads such as contactors, solenoids, or alarms.
Furthermore, the CPC810-3065 is designated as 168+AO, indicating its role within the Einstein and REFLECS ecosystems. The “AO” suffix typically refers to analog output capability or advanced analog options. You can use this board for refrigeration control, HVAC monitoring, or industrial process automation.
Input Specifications and Flexibility
All 16 input channels on the Emerson CPC810-3065 are truly flexible. You do not need to configure jumpers for analog versus digital mode. Instead, the controller automatically detects the signal type. This feature saves installation time and reduces configuration errors.
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Number of Inputs: 16 combination analog/digital points
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Analog Input Types: 0-5 VDC, 0-10 VDC, 4-20 mA (with external resistor)
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Digital Input Types: Dry contact (volt-free)
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Input Resolution: 12-bit analog-to-digital conversion
For instance, you can connect a 4-20 mA pressure transmitter to input 1. Simultaneously, input 2 can monitor a door limit switch. The CPC810-3065 handles both without any hardware changes.
Output Specifications
The relay outputs on the Emerson CPC810-3065 provide robust switching capability for field devices.
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Number of Outputs: 8 relay outputs
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Contact Type: Form A (normally open)
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Contact Rating: 24 V AC/DC at 2 A resistive
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Isolation: 1500 V RMS between coil and contacts
Use these relays to turn on/off compressors, fans, heaters, or indicator lights. Each output can be controlled individually by the Einstein or REFLECS controller logic.
Power Supply Features
The Emerson CPC810-3065 offers a useful feature for field installers. It provides both +5 VDC and +12 VDC output voltage points. These terminals can power external transducers or sensors directly. Consequently, you may not need a separate power supply for devices like pressure transmitters or humidity sensors.
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+5 VDC output: Maximum 100 mA
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+12 VDC output: Maximum 200 mA
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Protection: Short-circuit protected with auto-reset fuse
Always verify the total current draw of your external devices. Exceeding the maximum ratings may cause the protection circuit to trip.
Communication and Network Integration
The Emerson CPC810-3065 connects to your main controller via an RS485 network. This board is 100% compatible with the older 16AI series. Therefore, you can use it as a drop-in replacement in existing systems without reprogramming.
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Communication Protocol: CPC proprietary (Einstein I/O network or REFLECS COM A&D network)
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Physical Layer: RS485, 2-wire plus shield
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Network ID Setting: DIP switches (0 to 15)
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Baud Rate Setting: DIP switch configurable (typical 9600 or 19200 bps)
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Maximum Cable Length: 4000 feet (1200 meters)
First, set the network ID using the DIP switches on the CPC810-3065. Ensure each board on the same network has a unique ID. Next, configure the baud rate to match the controller. Then connect the RS485 A and B terminals in a daisy-chain topology.
Handheld Terminal Interface
Unlike older 16AI boards, the Emerson CPC810-3065 includes a built-in handheld terminal interface. This feature is a major advantage for maintenance technicians. You can plug a compatible handheld terminal directly into the board. Then view each input’s raw voltage and converted engineering units. No voltmeter, laptop, or front panel display is required.
This handheld capability speeds up troubleshooting significantly. For example, a technician can quickly check all 16 input values at the board location. They do not need to walk back to the main controller or carry extra test equipment.
Frequently Asked Questions (FAQ)
1. Can I use the CPC810-3065 with a non-CPC controller?
No, the Emerson CPC810-3065 uses a proprietary RS485 protocol. It only works with Einstein, REFLECS, or other CPC-compatible controllers. You cannot connect it to a standard Modbus or Profibus network without a gateway.
2. Is the CPC810-3065 a direct replacement for the old 16AI board?
Yes, the CPC810-3065 is 100% pin-compatible with the 16AI. You can swap the boards without changing any wiring or controller programming. The DIP switch settings also remain the same.
3. How do I connect a 4-20 mA sensor to the analog input?
Connect the 4-20 mA sensor across the input terminal and common. Add an external 250 ohm precision resistor across the same terminals. This resistor converts 4-20 mA to 1-5 VDC, which the CPC810-3065 measures directly.
4. What handheld terminal works with this board?
Emerson offers a compatible handheld terminal (sold separately, part number varies by region). Any handheld terminal designed for MultiFlex boards will work. Consult the CPC810-3065 user manual for the approved accessory list.
5. Can I mix analog and digital inputs on the same board?
Yes, each of the 16 inputs can be configured independently. The Emerson CPC810-3065 automatically detects the signal type per channel. You can have some analog sensors and some dry contacts on the same board without jumpers.
