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ND-6520
NuDAM Isolated Converter Module RS232 to RS485
97,00 EUR
inkl. Umsatzsteuer 115,43 EUR
- Bidirectional Serial Conversion: Converts RS‑232 signals to RS‑422 (4‑wire full‑duplex) or RS‑485 (2‑wire half‑duplex) differential communication.
- High‑Speed Data Transmission: Supports baud rates from 1200 to 115,200 bps, matching the input RS‑232 speed.
- Automatic Direction Flow Control: Eliminates the need for software‑controlled data‑direction signals when operating in RS‑485 mode.
- High Isolation Voltage: Provides 2500 Vrms isolation between the host RS‑232 interface and the RS‑422/RS‑485 network, protecting equipment from ground loops and electrical surges.
- Extended Network Capacity: Supports up to 128 modules on a single RS‑485 bus segment and up to 256 addressable modules when used with ND‑6510 repeaters.
- Long‑Distance Communication: RS‑485 network distance up to 4000 ft (1200 m) without repeaters.
- Industrial‑Grade Design: Rugged ABS enclosure with internal EMI shielding and conformal coating for resistance to humidity, salt spray, and chemical exposure.
- Low Power Consumption: Typical power usage 0.912 W from a +10 V – +30 V DC supply.
- Plug‑and‑Play Compatibility: Standard DB‑9 female RS‑232 connector and plug‑in screw terminal block for RS‑422/RS‑485 wiring.
- Simple Configuration: Hardware DIP‑switch setup for baud rate and data format; no software configuration required.
- Network Integration: Serves as the host interface for NuDAM analog, digital, and counter modules in distributed data acquisition systems.
- High‑Speed Data Transmission: Supports baud rates from 1200 to 115,200 bps, matching the input RS‑232 speed.
- Automatic Direction Flow Control: Eliminates the need for software‑controlled data‑direction signals when operating in RS‑485 mode.
- High Isolation Voltage: Provides 2500 Vrms isolation between the host RS‑232 interface and the RS‑422/RS‑485 network, protecting equipment from ground loops and electrical surges.
- Extended Network Capacity: Supports up to 128 modules on a single RS‑485 bus segment and up to 256 addressable modules when used with ND‑6510 repeaters.
- Long‑Distance Communication: RS‑485 network distance up to 4000 ft (1200 m) without repeaters.
- Industrial‑Grade Design: Rugged ABS enclosure with internal EMI shielding and conformal coating for resistance to humidity, salt spray, and chemical exposure.
- Low Power Consumption: Typical power usage 0.912 W from a +10 V – +30 V DC supply.
- Plug‑and‑Play Compatibility: Standard DB‑9 female RS‑232 connector and plug‑in screw terminal block for RS‑422/RS‑485 wiring.
- Simple Configuration: Hardware DIP‑switch setup for baud rate and data format; no software configuration required.
- Network Integration: Serves as the host interface for NuDAM analog, digital, and counter modules in distributed data acquisition systems.
Comprehensive Product Summary – NuDAM ND‑6520 Isolated Converter Module (RS‑232 to RS‑485/RS‑422)
### 1. Product Overview
Product Name: NuDAM Isolated Converter Module RS‑232 to RS‑485/RS‑422
Model: ND‑6520
Series: NuDAM‑6000 Series Communication Modules
Article Number: ND‑6520
Manufacturer: ADLINK Technology Inc. (Taiwan)
The ND‑6520 is a compact, industrial‑grade communication interface converter designed to bridge standard RS‑232 serial ports with RS‑422 or RS‑485 networks. It is part of ADLINK’s NuDAM‑6000 modular data acquisition and control system, which supports distributed I/O and communication over long‑distance, multi‑drop RS‑485 networks. The ND‑6520 provides galvanic isolation, automatic data‑direction control, and robust noise immunity for reliable operation in harsh industrial environments.
### 2. Key Features
- Bidirectional Serial Conversion: Converts RS‑232 signals to RS‑422 (4‑wire full‑duplex) or RS‑485 (2‑wire half‑duplex) differential communication.
- High‑Speed Data Transmission: Supports baud rates from 1200 to 115,200 bps, matching the input RS‑232 speed.
- Automatic Direction Flow Control: Eliminates the need for software‑controlled data‑direction signals when operating in RS‑485 mode.
- High Isolation Voltage: Provides 2500 Vrms isolation between the host RS‑232 interface and the RS‑422/RS‑485 network, protecting equipment from ground loops and electrical surges.
- Extended Network Capacity: Supports up to 128 modules on a single RS‑485 bus segment and up to 256 addressable modules when used with ND‑6510 repeaters.
- Long‑Distance Communication: RS‑485 network distance up to 4000 ft (1200 m) without repeaters.
- Industrial‑Grade Design: Rugged ABS enclosure with internal EMI shielding and conformal coating for resistance to humidity, salt spray, and chemical exposure.
- Low Power Consumption: Typical power usage 0.912 W from a +10 V – +30 V DC supply.
- Plug‑and‑Play Compatibility: Standard DB‑9 female RS‑232 connector and plug‑in screw terminal block for RS‑422/RS‑485 wiring.
- Simple Configuration: Hardware DIP‑switch setup for baud rate and data format; no software configuration required.
- Network Integration: Serves as the host interface for NuDAM analog, digital, and counter modules in distributed data acquisition systems.
### 3. Technical Specifications
| Parameter | Specification |
|----------------|------------------|
| Input Interface | RS‑232, standard 9‑pin female D‑type connector |
| Output Interface | RS‑422 (4‑wire full‑duplex) or RS‑485 (2‑wire half‑duplex), differential |
| Baud Rate | 1200, 2400, 4800, 9600, 19.2 K, 38.4 K, 57.6 K, 115.2 K bps |
| Data Format | 5, 6, 7, 8 data bits; 1 or 2 stop bits; parity = None, Even, Odd |
| Isolation Voltage | 2500 Vrms between RS‑232 and RS‑422/RS‑485 circuits |
| Maximum Bus Distance | 4000 ft (1200 m) |
| Maximum Bus Loading | 128 modules per RS‑485 segment |
| Maximum Addressable Modules | 256 modules (with ND‑6510 repeater) |
| Power Supply | +10 V DC to +30 V DC unregulated |
| Power Consumption | 0.912 W typical |
| Operating Temperature | −10 °C to +70 °C (typical for NuDAM modules) |
| Storage Temperature | −25 °C to +80 °C |
| Case Material | ABS plastic with internal EMI shielding and conformal coating |
| Mounting | DIN‑rail or panel mounting |
| Dimensions / Weight | Compact modular form factor (approx. 72 × 118 × 25 mm; < 200 g typical) |
### 4. Functionality
The ND‑6520 functions as a transparent serial converter, enabling a host computer equipped with a standard RS‑232 port to communicate with remote RS‑422 or RS‑485 devices. It translates single‑ended RS‑232 voltage levels into differential signals suitable for industrial multi‑drop networks.
Operating Principle:
- The RS‑232 interface connects directly to a PC, IPC, or notebook via a DB‑9 cable.
- The converter’s internal transceiver and opto‑isolators regenerate and isolate the signal.
- The RS‑422/RS‑485 side drives differential lines through a plug‑in screw terminal block.
- Automatic direction control circuitry manages transmit/receive switching in half‑duplex RS‑485 mode.
Typical Applications:
- Extending PC serial communication to remote data acquisition modules (NuDAM‑601x, 602x, 605x, 606x, 6080).
- Industrial automation, SCADA, and process control systems.
- Building management and environmental monitoring networks.
- Laboratory instrumentation and test setups requiring long‑distance serial links.
- Integration of legacy RS‑232 devices into modern RS‑485 fieldbus networks.
Compatibility:
Fully compatible with all NuDAM‑6000 series modules and any third‑party RS‑485/RS‑422 devices using standard EIA‑485 signaling.
### 5. Components & Accessories
Included Components:
- ND‑6520 converter module
- Plug‑in screw terminal block for RS‑422/RS‑485 connection
- Integrated DB‑9 female RS‑232 connector
- Internal DC‑DC isolation circuitry and transient protection
Optional Accessories:
- RS‑232 cable (DB‑9 male‑to‑female)
- External DC power supply (+10 V – +30 V DC)
- DIN‑rail mounting kit
- RS‑485 termination resistors (120 Ω ± 2 %)
- Shielded twisted‑pair communication cable (recommended AWG 22–26)
Connectors and Pin Assignments:
RS‑232 (DB‑9 Female):
Pin 2 = RXD, Pin 3 = TXD, Pin 5 = GND
RS‑422/RS‑485 (Screw Terminal):
1 = (Y) DATA+, 2 = (G) DATA−, 4 = TX+, 5 = TX−, 6 = RX+, 7 = RX−, 9 = +Vs (+10 V – +30 V), 10 = GND
### 6. Installation & Setup
Requirements:
- Host computer with RS‑232 serial port
- RS‑232 cable (DB‑9 female)
- DC power supply (+10 V – +30 V DC)
- Shielded twisted‑pair wiring for RS‑485/RS‑422
Installation Procedure:
1. Power off the host computer.
2. Connect the ND‑6520’s DB‑9 connector to the host RS‑232 port.
3. Wire the RS‑485/RS‑422 terminals to the network bus, observing polarity.
4. Connect the DC power supply to +Vs and GND terminals.
5. Power on the converter and host system.
6. Verify communication using the NuDAM Administration Utility or terminal software.
Setup and Configuration:
- Default baud rate: 9600 bps
- Default data format: 8 data bits, 1 stop bit, no parity
- Configuration via internal DIP switches (accessible by opening the case).
- Switch settings determine baud rate and data format; changes take effect after power cycling.
Network Termination:
Install 120 Ω ± 2 % resistors at both ends of the RS‑485 bus to prevent signal reflections.
Shielding Recommendations:
Use shielded twisted‑pair cable; connect shields to protective earth at each bus connection to minimize EMI.
### 7. Performance & Capabilities
- Transmission Speed: Up to 115.2 kbps over 1200 m cable.
- Network Capacity: 128 nodes per segment; 256 nodes with repeater.
- Signal Integrity: Slew‑rate‑limited transceivers minimize EMI and reflections.
- Isolation Protection: 2500 Vrms galvanic isolation prevents ground‑loop damage.
- Power Efficiency: < 1 W consumption ensures minimal heat generation.
- Reliability: Integrated watchdog and thermal shutdown circuits protect against bus contention and over‑current.
- Noise Immunity: Internal shielding and conformal coating enhance resistance to electromagnetic interference.
- Environmental Robustness: Designed for industrial temperature range and harsh conditions.
Limitations:
- Half‑duplex operation in RS‑485 mode (cannot transmit and receive simultaneously).
- Requires consistent baud rate and data format across all network devices.
- No software configuration utility; hardware switch setup only.
### 8. Standards & Compliance
- Electrical Interface Standards:
- EIA/TIA‑232‑E (RS‑232)
- EIA/TIA‑422‑B (RS‑422)
- EIA/TIA‑485‑A (RS‑485)
- Isolation & Safety:
- 2500 Vrms isolation barrier between host and field side
- Over‑current and thermal protection on transceiver outputs
- EMC & Environmental:
- Designed for industrial EMI immunity
- Conformal coating for humidity and chemical resistance
- Regulatory Compliance:
- CE Class A conformity (per NuDAM‑6000 series)
- RoHS‑compliant construction
### 9. Additional Information
Warranty:
One‑year limited warranty from date of purchase against defects in materials and workmanship. Warranty excludes damage from misuse, modification, or operation beyond specified limits.
Support & Maintenance:
ADLINK provides technical documentation, NuDAM Administration software utilities, and firmware updates. Modules can be serviced or replaced under warranty by returning to authorized service centers.
Maintenance Guidelines:
- Use stable DC power sources (10–30 V DC).
- Avoid connecting or disconnecting wiring while powered.
- Keep modules away from strong magnetic fields and high‑power equipment.
- Use shielded twisted‑pair cables for all communication lines.
- Apply proper termination resistors at both ends of the RS‑485 bus.
Software Utilities:
Although the ND‑6520 itself requires no software, the NuDAM Administration Utility (Windows‑based) can be used to configure and monitor other NuDAM modules connected through the ND‑6520 interface.
Network Integration Example:
A typical NuDAM network uses the ND‑6520 as the host interface, ND‑6510 repeaters to extend distance, and multiple I/O modules (ND‑6013, 6017, 6021, 6050, 6063, 6080, etc.) distributed along the RS‑485 bus. The host PC communicates with all modules using ASCII command/response protocol.
### Summary
The ADLINK NuDAM ND‑6520 is a robust, isolated RS‑232‑to‑RS‑422/RS‑485 converter engineered for industrial data acquisition and control networks. It extends standard serial communication over long distances, supports high‑speed multi‑drop networking, and ensures electrical isolation between host and field devices. With its automatic direction control, wide power range, and rugged design, the ND‑6520 provides a reliable, maintenance‑free interface for connecting PCs or PLCs to distributed NuDAM modules or other RS‑485/RS‑422 equipment in demanding industrial environments.
### 1. Product Overview
Product Name: NuDAM Isolated Converter Module RS‑232 to RS‑485/RS‑422
Model: ND‑6520
Series: NuDAM‑6000 Series Communication Modules
Article Number: ND‑6520
Manufacturer: ADLINK Technology Inc. (Taiwan)
The ND‑6520 is a compact, industrial‑grade communication interface converter designed to bridge standard RS‑232 serial ports with RS‑422 or RS‑485 networks. It is part of ADLINK’s NuDAM‑6000 modular data acquisition and control system, which supports distributed I/O and communication over long‑distance, multi‑drop RS‑485 networks. The ND‑6520 provides galvanic isolation, automatic data‑direction control, and robust noise immunity for reliable operation in harsh industrial environments.
### 2. Key Features
- Bidirectional Serial Conversion: Converts RS‑232 signals to RS‑422 (4‑wire full‑duplex) or RS‑485 (2‑wire half‑duplex) differential communication.
- High‑Speed Data Transmission: Supports baud rates from 1200 to 115,200 bps, matching the input RS‑232 speed.
- Automatic Direction Flow Control: Eliminates the need for software‑controlled data‑direction signals when operating in RS‑485 mode.
- High Isolation Voltage: Provides 2500 Vrms isolation between the host RS‑232 interface and the RS‑422/RS‑485 network, protecting equipment from ground loops and electrical surges.
- Extended Network Capacity: Supports up to 128 modules on a single RS‑485 bus segment and up to 256 addressable modules when used with ND‑6510 repeaters.
- Long‑Distance Communication: RS‑485 network distance up to 4000 ft (1200 m) without repeaters.
- Industrial‑Grade Design: Rugged ABS enclosure with internal EMI shielding and conformal coating for resistance to humidity, salt spray, and chemical exposure.
- Low Power Consumption: Typical power usage 0.912 W from a +10 V – +30 V DC supply.
- Plug‑and‑Play Compatibility: Standard DB‑9 female RS‑232 connector and plug‑in screw terminal block for RS‑422/RS‑485 wiring.
- Simple Configuration: Hardware DIP‑switch setup for baud rate and data format; no software configuration required.
- Network Integration: Serves as the host interface for NuDAM analog, digital, and counter modules in distributed data acquisition systems.
### 3. Technical Specifications
| Parameter | Specification |
|----------------|------------------|
| Input Interface | RS‑232, standard 9‑pin female D‑type connector |
| Output Interface | RS‑422 (4‑wire full‑duplex) or RS‑485 (2‑wire half‑duplex), differential |
| Baud Rate | 1200, 2400, 4800, 9600, 19.2 K, 38.4 K, 57.6 K, 115.2 K bps |
| Data Format | 5, 6, 7, 8 data bits; 1 or 2 stop bits; parity = None, Even, Odd |
| Isolation Voltage | 2500 Vrms between RS‑232 and RS‑422/RS‑485 circuits |
| Maximum Bus Distance | 4000 ft (1200 m) |
| Maximum Bus Loading | 128 modules per RS‑485 segment |
| Maximum Addressable Modules | 256 modules (with ND‑6510 repeater) |
| Power Supply | +10 V DC to +30 V DC unregulated |
| Power Consumption | 0.912 W typical |
| Operating Temperature | −10 °C to +70 °C (typical for NuDAM modules) |
| Storage Temperature | −25 °C to +80 °C |
| Case Material | ABS plastic with internal EMI shielding and conformal coating |
| Mounting | DIN‑rail or panel mounting |
| Dimensions / Weight | Compact modular form factor (approx. 72 × 118 × 25 mm; < 200 g typical) |
### 4. Functionality
The ND‑6520 functions as a transparent serial converter, enabling a host computer equipped with a standard RS‑232 port to communicate with remote RS‑422 or RS‑485 devices. It translates single‑ended RS‑232 voltage levels into differential signals suitable for industrial multi‑drop networks.
Operating Principle:
- The RS‑232 interface connects directly to a PC, IPC, or notebook via a DB‑9 cable.
- The converter’s internal transceiver and opto‑isolators regenerate and isolate the signal.
- The RS‑422/RS‑485 side drives differential lines through a plug‑in screw terminal block.
- Automatic direction control circuitry manages transmit/receive switching in half‑duplex RS‑485 mode.
Typical Applications:
- Extending PC serial communication to remote data acquisition modules (NuDAM‑601x, 602x, 605x, 606x, 6080).
- Industrial automation, SCADA, and process control systems.
- Building management and environmental monitoring networks.
- Laboratory instrumentation and test setups requiring long‑distance serial links.
- Integration of legacy RS‑232 devices into modern RS‑485 fieldbus networks.
Compatibility:
Fully compatible with all NuDAM‑6000 series modules and any third‑party RS‑485/RS‑422 devices using standard EIA‑485 signaling.
### 5. Components & Accessories
Included Components:
- ND‑6520 converter module
- Plug‑in screw terminal block for RS‑422/RS‑485 connection
- Integrated DB‑9 female RS‑232 connector
- Internal DC‑DC isolation circuitry and transient protection
Optional Accessories:
- RS‑232 cable (DB‑9 male‑to‑female)
- External DC power supply (+10 V – +30 V DC)
- DIN‑rail mounting kit
- RS‑485 termination resistors (120 Ω ± 2 %)
- Shielded twisted‑pair communication cable (recommended AWG 22–26)
Connectors and Pin Assignments:
RS‑232 (DB‑9 Female):
Pin 2 = RXD, Pin 3 = TXD, Pin 5 = GND
RS‑422/RS‑485 (Screw Terminal):
1 = (Y) DATA+, 2 = (G) DATA−, 4 = TX+, 5 = TX−, 6 = RX+, 7 = RX−, 9 = +Vs (+10 V – +30 V), 10 = GND
### 6. Installation & Setup
Requirements:
- Host computer with RS‑232 serial port
- RS‑232 cable (DB‑9 female)
- DC power supply (+10 V – +30 V DC)
- Shielded twisted‑pair wiring for RS‑485/RS‑422
Installation Procedure:
1. Power off the host computer.
2. Connect the ND‑6520’s DB‑9 connector to the host RS‑232 port.
3. Wire the RS‑485/RS‑422 terminals to the network bus, observing polarity.
4. Connect the DC power supply to +Vs and GND terminals.
5. Power on the converter and host system.
6. Verify communication using the NuDAM Administration Utility or terminal software.
Setup and Configuration:
- Default baud rate: 9600 bps
- Default data format: 8 data bits, 1 stop bit, no parity
- Configuration via internal DIP switches (accessible by opening the case).
- Switch settings determine baud rate and data format; changes take effect after power cycling.
Network Termination:
Install 120 Ω ± 2 % resistors at both ends of the RS‑485 bus to prevent signal reflections.
Shielding Recommendations:
Use shielded twisted‑pair cable; connect shields to protective earth at each bus connection to minimize EMI.
### 7. Performance & Capabilities
- Transmission Speed: Up to 115.2 kbps over 1200 m cable.
- Network Capacity: 128 nodes per segment; 256 nodes with repeater.
- Signal Integrity: Slew‑rate‑limited transceivers minimize EMI and reflections.
- Isolation Protection: 2500 Vrms galvanic isolation prevents ground‑loop damage.
- Power Efficiency: < 1 W consumption ensures minimal heat generation.
- Reliability: Integrated watchdog and thermal shutdown circuits protect against bus contention and over‑current.
- Noise Immunity: Internal shielding and conformal coating enhance resistance to electromagnetic interference.
- Environmental Robustness: Designed for industrial temperature range and harsh conditions.
Limitations:
- Half‑duplex operation in RS‑485 mode (cannot transmit and receive simultaneously).
- Requires consistent baud rate and data format across all network devices.
- No software configuration utility; hardware switch setup only.
### 8. Standards & Compliance
- Electrical Interface Standards:
- EIA/TIA‑232‑E (RS‑232)
- EIA/TIA‑422‑B (RS‑422)
- EIA/TIA‑485‑A (RS‑485)
- Isolation & Safety:
- 2500 Vrms isolation barrier between host and field side
- Over‑current and thermal protection on transceiver outputs
- EMC & Environmental:
- Designed for industrial EMI immunity
- Conformal coating for humidity and chemical resistance
- Regulatory Compliance:
- CE Class A conformity (per NuDAM‑6000 series)
- RoHS‑compliant construction
### 9. Additional Information
Warranty:
One‑year limited warranty from date of purchase against defects in materials and workmanship. Warranty excludes damage from misuse, modification, or operation beyond specified limits.
Support & Maintenance:
ADLINK provides technical documentation, NuDAM Administration software utilities, and firmware updates. Modules can be serviced or replaced under warranty by returning to authorized service centers.
Maintenance Guidelines:
- Use stable DC power sources (10–30 V DC).
- Avoid connecting or disconnecting wiring while powered.
- Keep modules away from strong magnetic fields and high‑power equipment.
- Use shielded twisted‑pair cables for all communication lines.
- Apply proper termination resistors at both ends of the RS‑485 bus.
Software Utilities:
Although the ND‑6520 itself requires no software, the NuDAM Administration Utility (Windows‑based) can be used to configure and monitor other NuDAM modules connected through the ND‑6520 interface.
Network Integration Example:
A typical NuDAM network uses the ND‑6520 as the host interface, ND‑6510 repeaters to extend distance, and multiple I/O modules (ND‑6013, 6017, 6021, 6050, 6063, 6080, etc.) distributed along the RS‑485 bus. The host PC communicates with all modules using ASCII command/response protocol.
### Summary
The ADLINK NuDAM ND‑6520 is a robust, isolated RS‑232‑to‑RS‑422/RS‑485 converter engineered for industrial data acquisition and control networks. It extends standard serial communication over long distances, supports high‑speed multi‑drop networking, and ensures electrical isolation between host and field devices. With its automatic direction control, wide power range, and rugged design, the ND‑6520 provides a reliable, maintenance‑free interface for connecting PCs or PLCs to distributed NuDAM modules or other RS‑485/RS‑422 equipment in demanding industrial environments.
