Description

EPALM10-DA71 Industrial Analog Output Module

Basic Information

• Model Number: EPALM10-DA71
• Module Type: 10-channel isolated analog output (AO) module for DCS distributed control system
• Warranty: One Year
• Core Function: Convert digital bus signals into standard 4–20mA / 0–10VDC analog field signals to drive valves, positioners, frequency converters and local indicators

Technical Specifications

1. Power Supply

• External power: 24 VDC ±20%
• Backplane bus power supply from DCS rack
• Total power consumption: ≤8.5W

2. Analog Output Channels

• Total: 10 independent isolated channels
• Signal modes: Configurable 4–20mA current output or 0–10V voltage output per channel
• Output driving capacity: Max 750Ω load for 4–20mA loop
• Conversion resolution: 16-bit high-precision DAC
• Overall accuracy: ±0.1% full scale at 25°C

3. Isolation & Protection

• Channel-to-backplane galvanic isolation: 2500 VAC dielectric withstand
• Built-in overvoltage, short-circuit, reverse polarity and surge protection for each loop
• PCB with full conformal coating for anti-humidity, anti-corrosion and anti-dust
• 

4. Environmental Parameters

• Operating temperature: 0°C ~ +60°C
• Storage temperature: -40°C ~ +85°C
• Humidity: 5%–95% non-condensing
• Protection class: IP20 (DIN rail rack installation inside control cabinet)

5. Communication & Compatibility

• Internal backplane high-speed parallel bus communication with DCS controller
• Hot-swappable design during system power-on
• Matches EPALM series DCS rack chassis and terminal base assemblies
• Front LED indicators for power, module run status, channel fault and loop short circuit

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Product Overview

The EPALM10-DA71 is a high-density 10-channel isolated analog output module belonging to EPALM DCS system series, widely used in petrochemical, thermal power, oil & gas, chemical and pulp & paper process industries.

It acts as the final control signal output unit of the DCS system: the main controller sends digital calculation results (PID regulation opening, flow setpoint, temperature control output) via the rack backplane to this module, which converts digital values into continuous standard analog signals to control pneumatic control valves, electric actuators, variable frequency drives and local field meters.