Comprehensive Product Summary – ExpertDAQ EX9065D Relay Module

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### 1. Product Overview

Product Name: ExpertDAQ EX9065D
Model Number: EX9065D
Series: EX9000 Series Distributed I/O Modules
Article Number: EX9065D
Manufacturer: ExpertDAQ (Expert Data Acquisition Systems)

The ExpertDAQ EX9065D is a robust, industrial-grade RS-485 relay output and digital input module designed for distributed control and monitoring applications. It belongs to the ExpertDAQ EX9000 series, which provides modular, networked I/O expansion for automation systems. The EX9065D integrates five relay output channels and four isolated digital input channels, offering reliable switching and monitoring capabilities in harsh industrial environments. It supports both ASCII command and Modbus RTU communication protocols, enabling flexible integration with PLCs, SCADA systems, and industrial PCs.

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### 2. Key Features

- 5 Relay Output Channels: Each channel supports up to 5A at 250VAC or 30VDC, suitable for controlling solenoids, contactors, lamps, and other actuators.
- 4 Isolated Digital Inputs: Accepts a wide input voltage range (4–30VDC) with 3750Vrms isolation, ensuring reliable signal acquisition from sensors and switches.
- RS-485 Communication Interface: Two-wire half-duplex interface supporting up to 256 modules on a single bus, with a maximum cable length of 1200 meters without a repeater.
- Protocol Support: Operates in ASCII command mode or Modbus RTU mode (EX9065D-M variant).
- High Isolation: 4000V surge strength and 3750Vrms channel-to-system isolation protect against electrical noise and transient surges.
- LED Indicators: 11 status LEDs provide visual feedback for each input and output channel, simplifying diagnostics.
- Wide Power Supply Range: Operates from +10VDC to +30VDC, allowing flexible power integration.
- Extended Temperature Range: Designed for industrial environments, operating from -25°C to +75°C.
- Dual Watchdog System: Hardware and software watchdogs ensure continuous operation and fail-safe output control.
- EEPROM Configuration Storage: Retains settings such as address, baud rate, and data format even after power loss.
- Compact and Rugged Design: Built for DIN-rail or panel mounting in industrial control cabinets.

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### 3. Technical Specifications

Communication Interface:
- Type: RS-485, 2-wire half-duplex
- Supported Baud Rates: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps
- Protocols: ASCII command set, Modbus RTU (EX9065D-M variant)
- Maximum Nodes: 256 modules per RS-485 network
- Maximum Cable Length: 1200 meters (without repeater)

Digital Outputs (Relay):
- Channels: 5 relay output channels (Form A, normally open)
- Contact Rating: 5A @ 250VAC / 5A @ 30VDC
- Surge Strength: 4000V
- Operate Time: ≤6 ms
- Release Time: ≤3 ms
- Minimum Mechanical Life: 10⁵ operations
- Isolation: 3750Vrms channel-to-system
- Output Data Range: 00–1F (binary representation of 5 relays)

Digital Inputs:
- Channels: 4 isolated digital input channels with common source
- Input Voltage Range: +4V to +30VDC (logic high), <+1VDC (logic low)
- Input Impedance: 3 kΩ
- Isolation Voltage: 3750Vrms
- Input Data Range: 00–0F (binary representation of 4 inputs)

Power Supply:
- Voltage: +10VDC to +30VDC
- Power Consumption: 1.5W typical (up to 2.2W depending on variant)

Environmental Conditions:
- Operating Temperature: -25°C to +75°C
- Storage Temperature: -30°C to +75°C
- Humidity: 10–90% RH, non-condensing

Physical Characteristics:
- Mounting: DIN-rail or panel mount
- Indicators: 11 LEDs (5 for relay outputs, 4 for digital inputs, 2 for status/power)
- Isolation: Channel-to-system 3750Vrms, surge protection 4000V
- Enclosure: Industrial-grade plastic housing

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### 4. Functionality

The EX9065D functions as a distributed I/O module that interfaces field devices with supervisory control systems via RS-485. It provides both input monitoring and output control capabilities:

- Relay Outputs: Each of the five relays can switch AC or DC loads, enabling control of motors, valves, alarms, and lighting systems.
- Digital Inputs: The four isolated inputs detect the status of external devices such as pushbuttons, limit switches, or sensors.
- Communication: The module exchanges data with a host controller using ASCII or Modbus RTU commands. It supports read/write operations for input/output states, counters, and configuration parameters.
- Watchdog Function: Ensures outputs revert to a predefined safe state if communication is lost or the host system fails.
- EEPROM Configuration: Stores module address, baud rate, and data format, allowing persistent configuration across power cycles.
- Latch and Counter Functions: Inputs can be latched to capture transient events or counted for pulse applications.
- INIT* Mode: Provides a hardware-based reset and configuration recovery mechanism.

Typical Applications:
- Industrial automation and process control
- Building management systems (BMS)
- Remote monitoring and control of pumps, fans, and lighting
- Energy management and environmental monitoring
- Machine control and safety interlocks
- SCADA and PLC I/O expansion

Compatibility:
- Compatible with Modbus RTU master devices, PLCs, SCADA software, and industrial PCs.
- Integrates seamlessly with other ExpertDAQ EX9000 series modules.

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### 5. Components & Accessories

Included Components:
- EX9065D module
- Terminal block connectors for I/O and power
- RS-485 communication terminals
- User manual and configuration software (downloadable)

Optional Accessories:
- RS-485 to USB or RS-232 converters
- RS-485 repeaters for extended networks
- DIN-rail mounting clips
- External power supply (10–30VDC regulated)

Connectors:
- Screw-type terminal blocks for secure wiring
- RS-485 interface terminals (Data+, Data–, GND)
- Power input terminals (+Vs, GND)

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### 6. Installation & Setup

Requirements:
- Power supply: 10–30VDC regulated
- RS-485 network connection (twisted pair cable recommended)
- Host controller or PC with RS-485/USB interface

Mounting Options:
- DIN-rail mounting (standard 35mm rail)
- Panel mounting via screw holes

Configuration Steps:
1. Power Connection: Connect +Vs and GND to a 10–30VDC power source.
2. RS-485 Wiring: Connect Data+ and Data– lines to the RS-485 bus.
3. Address and Baud Rate: Default address = 01, baud rate = 9600 bps.
4. INIT* Mode: For resetting configuration, connect INIT* pin to GND and power on.
5. Software Setup: Use ExpertDAQ configuration software or Modbus master to set parameters.
6. Verification: Check LED indicators for power and communication status.

Default Communication Settings:
- Address: 01
- Baud Rate: 9600 bps
- Data Format: 8N1 (8 data bits, no parity, 1 stop bit)
- Protocol: ASCII (EX9065D) or Modbus RTU (EX9065D-M)

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### 7. Performance & Capabilities

Speed and Responsiveness:
- Communication speed up to 115.2 kbps
- Relay switching time: Operate ≤6 ms, Release ≤3 ms
- Input response time: <1 ms typical

Capacity:
- 5 relay outputs, 4 digital inputs per module
- Up to 256 modules per RS-485 network

Efficiency:
- Low power consumption (1.5–2.2W)
- Compact design minimizes panel space

Reliability:
- Dual watchdog system (hardware + software) ensures continuous operation
- EEPROM retains configuration and safe values
- Galvanic isolation prevents ground loops and signal interference

Limitations:
- Relay outputs limited to 5A per channel
- No analog input/output capability (digital only)
- Requires external power supply and RS-485 master device

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### 8. Standards & Compliance

Electrical and Safety Standards:
- Isolation: 3750Vrms channel-to-system
- Surge Protection: 4000V
- Dielectric Strength: 2500Vrms (relay contacts)
- EMC Compliance: Designed for industrial electromagnetic environments

Communication Standards:
- RS-485 (TIA/EIA-485-A compliant)
- Modbus RTU protocol (per Modbus Organization specification)
- ASCII command protocol (ExpertDAQ proprietary)

Environmental Compliance:
- RoHS compliant
- CE certified (for electromagnetic compatibility and safety)

Industry Standards Supported:
- Modbus RTU (function codes 0x01, 0x02, 0x03, 0x04, 0x05, 0x0F)
- ASCII command set for ExpertDAQ EX9000 series

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### 9. Additional Information

Watchdog System:
- Module Watchdog: Hardware circuit monitors internal operation and resets the module if a fault occurs.
- Host Watchdog: Software timer monitors communication with the host; if timeout occurs, outputs revert to Safe Value.
- Safe and Power-On Values: User-configurable output states for startup and communication loss conditions.

Maintenance:
- Periodic inspection of wiring and terminal tightness recommended.
- Relay contacts should be checked for wear after extended operation (>10⁵ cycles).
- Firmware updates available via ExpertDAQ support.

Firmware & Software:
- Firmware version readable via command `$AAF` (e.g., version D03.11).
- Configuration and monitoring supported through ExpertDAQ utility software or Modbus-compatible SCADA systems.

Warranty & Support:
- Standard manufacturer warranty (typically 2 years, region-dependent).
- Technical support via ExpertDAQ website and authorized distributors.
- Documentation includes user manual, Modbus mapping tables, and command reference.

Maintenance & Updates:
- Firmware updates provided for performance improvements and protocol enhancements.
- Configuration stored in non-volatile memory (EEPROM) to prevent data loss.

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### Summary

The ExpertDAQ EX9065D is a versatile and durable RS-485 relay output and digital input module engineered for industrial automation and remote I/O expansion. With 5 relay outputs, 4 isolated digital inputs, and robust communication capabilities, it provides a reliable interface between field devices and supervisory control systems. Its high isolation, dual watchdog protection, and wide operating temperature range make it ideal for demanding environments. Supporting both ASCII and Modbus RTU protocols, the EX9065D integrates seamlessly into existing control architectures, offering flexibility, safety, and long-term reliability for distributed control applications.