Phoenix Contact 2753601 IBS RT 24 DIO 16/16-T Digital I/O Module
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Product Information
The Phoenix Contact 2753601 IBS RT 24 DIO 16/16-T is a decentralized digital I/O module within the INTERBUS family, engineered for heavy-duty field deployment directly on machinery. Enclosed in a zinc die-cast housing rated at IP67, this unit operates reliably in harsh industrial environments without requiring an auxiliary control cabinet. The module integrates 16 digital inputs supporting 2-, 3-, or 4-wire connection technology and 16 digital outputs delivering up to 0.5 A per channel at a nominal supply voltage of 24 V DC. Standard M12 circular connectors handle sensor and actuator signals, protecting terminal connections against dust, liquids, and mechanical stress in automotive, packaging, and assembly applications.
Connecting a replacement unit into an active fieldbus line relies on the copper twisted-pair interface operating at a transmission rate of 500 kbit/s. Local and remote bus communication lines link directly through standard industrial connectors to the host INTERBUS master controller. Integrating a spare unit into the network requires system alignment using CMD or Config+ engineering software to verify fieldbus addressing, bus frame structure, and controller diagnostic parameters. Because fieldbus modules interface directly with operational machine logic, replacing a failed unit requires confirming that bus topology and master configurations match the donor station before restoring system power. ABC Industrial Parts can assist in sourcing fully tested replacement modules and verifying hardware compatibility for legacy fieldbus installations.
System status and channel diagnostics are continuously monitored via integrated LED indicators on the face of the housing. The UL LED indicates logic supply voltage above the 18.5 V DC minimum operating limit, while US indicates the presence of the 24 V DC sensor and actuator power. Bus communication state is reflected by the BA indicator, and the RD LED illuminates yellow when downstream bus segments are disabled. Short circuits or overloads on output channels OUT 1..16 light up red, and the FAIL / ERR indicator warns of peripheral or network faults. First-line troubleshooting involves checking input supply voltages, verifying IP67 connector tightness, and scanning master diagnostic registers. If logic supply parameters are correct but internal hardware failures persist, replacing the module or securing a tested exchange unit from ABC Industrial Parts offers the fastest route back to full production.
Technical Specifications
| Manufacturer | Phoenix Contact |
| Part Number | 2753601 |
| Model / Type | IBS RT 24 DIO 16/16-T |
| Component Type | Digital I/O Module |
| Product Family | INTERBUS |
| Supply Voltage (Nominal) | 24 V DC |
| Supply Voltage Range | 18.5 - 30.2 V DC |
| Output Voltage (Nominal) | 24 V DC |
| Output Current per Channel | 0.5 A |
| Digital Inputs | 16 |
| Digital Outputs | 16 |
| Fieldbus Protocol | INTERBUS |
| Transmission Medium | Copper (Twisted Pair) |
| Data Transfer Rate | 500 kbit/s |
| Connector Type (I/O) | M12 Circular Connector |
| Housing Material | Zinc Die-Cast |
| Ingress Protection Rating | IP67 |
Programming and Configuration
Engineering and configuring the Phoenix Contact 2753601 IBS RT 24 DIO 16/16-T is performed using CMD or Config+ software tools. The module operates as a dedicated station on the INTERBUS network, requiring precise logical mapping within the controller address configuration.
During commissioning or module replacement, the master controller identifies the device based on its predefined position in the bus topology. System engineers must verify that I/O address mapping corresponds to machine logic programs and that controller diagnostic registers accurately reflect standard operational parameters across all 16 input and 16 output channels.
Communication and System Integration
The module incorporates an INTERBUS copper remote and local bus interface designed for high-speed data transfer at rates up to 500 kbit/s. Standardized twisted-pair copper cabling connects the module directly to upstream and downstream network nodes without necessitating external bus converters.
Physical bus connections utilize IP67-rated circular connectors to preserve signal integrity and shield communications against severe electromagnetic interference. The -T suffix designates copper-medium connectivity, rendering the unit fully compatible with standard INTERBUS copper remote and local bus master controllers.
Diagnostics and Status Indication
The IBS RT 24 DIO 16/16-T incorporates an array of diagnostic LEDs directly on the front panel. Status lights indicate logic power status (UL), sensor/actuator supply status (US), bus activity (BA), downstream bus segment disable status (RD), and general module or network error conditions (FAIL / ERR).
Individual channel indicators monitor all 16 digital inputs (IN 1..16) and 16 digital outputs (OUT 1..16). Yellow LEDs signal active high-level logic, while a red output LED warns of channel-specific short-circuit or overload conditions, enabling rapid fault identification at the machine level.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| UL | Green / Off - Green: Logic supply present | Off: Supply missing/failure | Logic supply voltage status |
| US | Green / Off - Green: 24V present | Off: Supply missing | Sensor/actuator supply voltage status |
| BA | Green / Off - Green: Bus active | Off: No communication | INTERBUS bus activity status |
| RD | Yellow - Solid | Remote bus disabled / downstream bus segment switched off |
| FAIL / ERR | Red - Solid / Flashing | Module error, peripheral fault, output overload/short circuit, or bus diagnostic fault |
| IN 1..16 | Yellow - Solid | Input signal active (High level at input terminal) |
| OUT 1..16 | Yellow / Red - Yellow: Active signal | Red: Short circuit or overload | Output status and channel fault indication |
Replacement and Spare Part Considerations
When swapping out a damaged Phoenix Contact 2753601 module, ensure the replacement unit matches the exact IBS RT 24 DIO 16/16-T designation and copper transmission specifications (-T). Because the device is mounted directly on machine frames without protective cabinets, verify that all IP67 housing seals and M12 cable connectors are fully torqued to prevent moisture or particulate ingress.
Prior to reconnecting power, check that the main power supply supplies a stable voltage within the 18.5 V DC to 30.2 V DC window. After replacing the physical hardware, use CMD or Config+ software tools to confirm that the INTERBUS master recognizes the node position and clears any peripheral or communication error registers.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| Peripheral Fault (PF) | Peripheral Fault / Short Circuit | Short circuit or overload detected at one or more digital output channels, or failure of sensor supply voltage US. | Actuator wiring short circuit, defective output load, sensor power supply line disconnected or below threshold. | Check M12 output cables and connected loads for short circuits; verify 24 V DC sensor/actuator supply voltage US. |
| Bus Warning / Bus Error | INTERBUS Communication Fault | Transmission error or interruption detected on the INTERBUS copper segment. | Damaged copper bus cable, loose IP67 bus connector, high electromagnetic interference, fault in upstream module. | Check network cable integrity and shield termination; verify IP67 bus plug connection. |
| Logic Voltage Fault (UL Low) | Logic Supply Undervoltage | Module internal logic supply voltage dropped below minimum operating limit (18.5 V DC). | Main 24 V DC power supply failure, excessive voltage drop on supply line, internal power converter defect. | Check supply voltage at module power input terminals. If input voltage is correct but UL LED remains off, internal hardware fault — replace the unit. |
Frequently Asked Questions
Which software is used to configure the Phoenix Contact 2753601 module?
The IBS RT 24 DIO 16/16-T module is configured and diagnosed using standard INTERBUS engineering software, such as CMD or Config+.
What type of network medium does this module require?
This module features a copper twisted-pair interface (-T variant) for INTERBUS communication at data rates up to 500 kbit/s.
What does a red illumination on an OUT status LED indicate?
A red light on an OUT LED indicates a short circuit or overload fault condition on that specific digital output channel.
Can this module be installed directly on a machine without a cabinet?
Yes, the module is housed in a heavy-duty zinc die-cast enclosure rated at IP67, engineered specifically for direct field mounting on machinery.
What is the acceptable supply voltage range for the logic power input?
The module operates on a nominal 24 V DC supply, with an acceptable operating range between 18.5 V DC and 30.2 V DC.
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Specific firmware and hardware versions
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Disclaimer:
We are not an authorised distributor of Phoenix Contact.
Product photos are for illustration purposes only and may differ from the actual product delivered.
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