Comprehensive Product Summary – Dataforth MAQ20-IDN

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### 1. Product Overview

Product Name: MAQ20-IDN
Model Number: MAQ20-IDN
Series: MAQ®20 Industrial Data Acquisition and Control System
Article Number: MAQ20-IDN
Manufacturer: Dataforth Corporation, Tucson, Arizona, USA

The MAQ20-IDN is an 8-channel, differential current input module designed for the MAQ®20 modular data acquisition and control platform. It provides high-accuracy measurement of process current signals in the 0–20 mA and 4–20 mA ranges. The module mounts directly on a DIN rail backbone and integrates seamlessly with other MAQ20 I/O and communication modules to form a scalable, distributed data acquisition system.

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### 2. Key Features

- Eight Differential Current Input Channels: Each channel independently configurable for 0–20 mA or 4–20 mA operation.
- High Accuracy: ±0.035 % of span typical, including linearity, hysteresis, and repeatability.
- Robust Isolation: 1500 Vrms channel-to-bus isolation for one minute; ±3 V peak channel-to-channel isolation.
- Input Protection: Continuous 240 Vrms field I/O protection; transient protection per ANSI/IEEE C37.90.1.
- Wide Operating Range: Industrial temperature range of –40 °C to +85 °C.
- High Noise Immunity: 100 dB common-mode rejection (CMR) and 30 dB normal-mode rejection (NMR) at 50/60 Hz.
- Per-Channel Configuration: Range, alarms, and averaging parameters can be set individually.
- Advanced Alarm Functions: High, High-High, Low, and Low-Low alarms with configurable deadbands and tracking/latching modes.
- Signal Averaging: Adjustable averaging weight (2⁰–2¹⁵) for noise reduction and stable readings.
- Hot-Swappable Design: Modules can be inserted or removed without system shutdown.
- Automatic Module Registration: The system automatically detects and assigns registration numbers to new modules.
- Modbus-Compatible Memory Map: Simplifies integration with third-party software and controllers.
- CE and ATEX Compliance (pending): Designed for heavy industrial environments and hazardous locations (Class I, Division 2).
- Compact DIN-Rail Form Factor: 114.6 × 15.3 × 82.8 mm for high-density installations.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|------------------|
| Input Channels | 8 differential current inputs |
| Input Ranges | 0–20 mA (default), 4–20 mA |
| Input Over/Under Range | –0.5 mA to 21.5 mA measurable |
| Resolution | 0.012 % of span |
| Accuracy | ±0.035 % of span |
| Linearity/Conformity | ±0.02 % of span |
| Zero Stability | ±15 ppm/°C |
| Span Stability | ±35 ppm/°C |
| Bandwidth | 3 Hz |
| Scan Rate | 200 channels/s |
| Input Protection | 240 Vrms continuous, ANSI/IEEE C37.90.1 transient |
| Isolation | 1500 Vrms channel-to-bus, ±3 V pk channel-to-channel |
| Common Mode Rejection | 100 dB @ 50/60 Hz |
| Normal Mode Rejection | 30 dB @ 50/60 Hz |
| Power Supply Current | 30 mA typical |
| Dimensions (H × W × D) | 114.6 mm × 15.3 mm × 82.8 mm (4.51 × 0.60 × 3.26 in) |
| Operating Temperature | –40 °C to +85 °C |
| Storage Temperature | –40 °C to +85 °C |
| Humidity | 0–95 % RH, non-condensing |
| Weight | Approx. 100 g (typical) |
| Compliance | CE, UL/CUL (Class I Div 2 pending), ATEX pending |
| Quality System | ISO 9001:2008 registered |

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### 4. Functionality

The MAQ20-IDN module measures differential process currents from industrial transmitters and sensors. Each channel converts the analog current signal into a high-resolution digital value accessible through the MAQ20 system’s Modbus-compatible memory map.

Operation:
- The module connects to the MAQ20 backbone, which distributes power and communication signals.
- Each channel’s range, alarm thresholds, and averaging parameters are configured via Dataforth’s ReDAQ Shape or Configuration Tool software.
- Data is continuously sampled and stored in local registers, accessible by the MAQ20-COMx communication module through Ethernet, USB, RS‑232, or RS‑485 interfaces.
- The module supports both real-time monitoring and logged data retrieval.

Applications:
- Industrial process monitoring and control
- SCADA and DCS systems
- Energy management and power monitoring
- Test stands and laboratory instrumentation
- Remote data acquisition in hazardous or noisy environments

Compatibility:
- Fully compatible with all MAQ20 backbones (MAQ20‑BKPLx) and communication modules (MAQ20‑COMx).
- Integrates with ReDAQ Shape, IPEmotion, LabVIEW, and other Modbus-based software.

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### 5. Components & Accessories

Included:
- MAQ20-IDN module
- Pluggable 20-position terminal block for field wiring
- ESD-protective packaging
- Quick-start documentation

Optional Accessories:
- MAQ20-BKPLx backbones (various channel capacities)
- MAQ20-COMx communication modules (Ethernet/USB/RS‑232/RS‑485)
- MAQ20-PWR3 auxiliary power supply module
- ReDAQ Shape software (developer and user versions)
- IPEmotion software for multi-vendor integration

Connectors:
- 20-position pluggable terminal block
- Shield terminals connected to field-side common (isolated from bus)
- External shield-to-ground connection if required

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### 6. Installation & Setup

Mounting:
- DIN-rail mountable (standard 35 mm rail).
- Modules snap into place using a top hook and bottom spring clip.
- Can be mounted on continuous flat panels or plates; multiple rows at 3U vertical spacing.

Installation Steps:
1. Mount the MAQ20 backbone on the DIN rail.
2. Insert the MAQ20-COMx communication module in the leftmost position and apply power (7–34 V DC).
3. Insert the MAQ20-IDN module into any vacant backbone slot.
4. Observe the blue Power LED and green Status LED for normal operation.
5. Connect field wiring to the terminal block according to channel assignments.

Configuration:
- Modules register automatically upon insertion.
- Each module receives a sequential registration number.
- Configuration parameters (range, alarms, averaging) are set via software or Modbus commands.
- Settings can be stored in EEPROM for retention after power cycles.

Maintenance:
- Modules are hot-swappable; replacement or expansion requires no system shutdown.
- Automatic re-registration occurs when modules are added or replaced.

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### 7. Performance & Capabilities

Measurement Performance:
- High precision with ±0.035 % span accuracy ensures reliable process monitoring.
- 3 Hz bandwidth and 200 samples/s scan rate provide responsive yet stable readings.
- Hardware low-pass filtering rejects 50/60 Hz interference.

Alarms:
- Four alarm types per channel: High, High-High, Low, Low-Low.
- Configurable as tracking or latching.
- Adjustable deadbands prevent false triggering.
- Alarm status indicated by red LED and accessible via Modbus registers.

Averaging:
- Weighted averaging (2⁰–2¹⁵) smooths noisy signals.
- Per-channel configuration allows optimization for dynamic or steady-state signals.

Reset Functions:
- Standard Reset: Clears alarms, resets min/max/average registers.
- Reset-to-Default: Restores factory settings except EEPROM-stored parameters.
- Power-On Reset: Automatically loads EEPROM settings after power cycle.

LED Indicators:
- PWR (Blue): Power status.
- STAT (Green): Module operation and detection indicator.
- TX/RX (Yellow): Communication activity.
- ALM (Red): Alarm condition.

Limitations:
- Designed for low-frequency process signals (3 Hz bandwidth).
- Not intended for high-speed transient current measurement.
- Not certified for life-support or nuclear applications.

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### 8. Standards & Compliance

Electrical and Environmental Standards:
- Transient Protection: ANSI/IEEE C37.90.1
- EMC Emissions: EN 61000‑6‑4 (ISM Group 1, Class A)
- EMC Immunity: EN 61000‑6‑2 (ISM Group 1, Performance A/B)
- RF Susceptibility: ±0.5 % span error maximum
- ESD/EFT Immunity: Performance B

Certifications:
- CE Mark (Heavy Industrial)
- UL/CUL Listing (Class I, Division 2, Groups A–D) pending
- ATEX Compliance pending
- ISO 9001:2008 Registered Quality Management System

Safety and Reliability:
- Designed for Class I, Division 2 hazardous locations.
- 240 Vrms continuous field I/O protection prevents damage from wiring errors.
- 1500 Vrms isolation ensures operator and equipment safety.

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### 9. Additional Information

Warranty:
- Hardware: 1 year from date of delivery.
- Software: 30 days from delivery.
- Special Products: 60 days from delivery.
- Warranty covers defects in materials and workmanship under normal use.
- Excludes damage from misuse, static discharge, or operation beyond specified limits.
- Repair or replacement at Dataforth’s discretion upon issuance of an RMA.

Repair & Returns:
- Contact Dataforth Customer Service at +1 (520) 741‑1404 or toll-free 1‑800‑444‑7644.
- Obtain a Return Material Authorization (RMA) before shipping.
- Ship prepaid to:
Dataforth Corporation
3331 E. Hemisphere Loop, Tucson, AZ 85706 USA

Support & Documentation:
- Technical support: techinfo@dataforth.com
- Website: [www.dataforth.com](http://www.dataforth.com)
- Manuals and software available for download:
- MA1041 Hardware User Manual
- MA1036 Quick Start Guide
- MA1037 Configuration Software Tool Manual
- MA1038 ReDAQ Shape User Manual

Maintenance:
- Periodic inspection of wiring and terminal connections recommended.
- Modules can be replaced individually without disturbing system operation.
- Firmware updates available through Dataforth support.

Quality Assurance:
- Manufactured under ISO 9001:2008 QMS.
- Each unit tested for accuracy, isolation, and environmental performance.

Critical Application Notice:
- Not intended for life-support, safety-critical, or nuclear control systems.
- Use in such applications is at the user’s own risk and responsibility.

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### Summary

The Dataforth MAQ20‑IDN is a precision 8‑channel differential current input module engineered for demanding industrial data acquisition and control environments. It combines high accuracy, robust isolation, and flexible configuration within a compact DIN‑rail form factor. Designed as part of the modular MAQ®20 system, it supports distributed processing, automatic registration, and seamless integration with Modbus‑based software tools.

With its 0–20 mA and 4–20 mA input ranges, per‑channel alarms, averaging, and comprehensive protection features, the MAQ20‑IDN delivers reliable, instrument‑class performance for process monitoring, automation, and test applications across a wide range of industries.