The 200-560-000-113 IOC4T I/O Card is a key input/output interface module in the Swiss VM600 mechanical protection system. It is primarily used in conjunction with the MPC4 Machinery Protection Card, providing signal acquisition, processing, and output functions for the entire vibration monitoring and mechanical protection system.
For critical equipment operating continuously over long periods-such as steam turbines, gas turbines, centrifugal compressors, generator sets, and large fan systems-the ongoing operation of mechanical protection systems is typically included in annual maintenance plans. Therefore, whether for equipment owners, system integrators, or maintenance service providers, the primary purposes of purchasing VM600 IOC4T spare parts generally include equipment maintenance, replacement of faulty modules, establishing inventory reserves, and supporting system expansion.

| Parameter | Specification |
|---|---|
| Model | IOC4T |
| Part Number | 200-560-000-113 |
| Product Type | Input/Output Card |
| Series | Machinery Protection System |
| Associated Module | MPC4 Machinery Protection Card |
| Country of Origin | Switzerland |
| Dynamic Signal Channels | 4 channels |
| Speed Signal Channels | 2 channels |
| Analog Outputs | 4 channels, individually configurable |
| Output Signal Type | 0–10 V or 4–20 mA |
| Relay Outputs | 4 programmable relays |
| Digital Outputs | 32 programmable open-collector outputs |
| Communication Interface | VM600 Backplane Interface |
| Installation Position | Rear of VM600 Rack |
| Hot-Swap Capability | Supported |
| EMC Protection | EMI/EMC Protected Inputs and Outputs |
| Operating Temperature | -25°C to +65°C |
| Storage Temperature | -40°C to +85°C |
| Dimensions | 21 × 17 × 5 cm |
| Weight | 0.35 kg |
| HS code | 8471609000 |
| Certifications | CE, EAC, IEC/EN Compliance Standards* |
Products Description
32 digital signals representing alarms are passed to the rack backplane and may be used by optional RLC16 relay cards and/or IRC4 intelligent relay cards mounted in the rack (jumper selectable).
The IOC4T 200-560-000-113 connects the raw dynamic (vibration) and speed signals from the sensors to the MPC4. These signals, once processed, are passed back to the IOC4T and made available on the terminal strip on its front panel (rear of VM600). For the dynamic signals, four on-board digital-to-analog converters (DACs) provide calibrated signal outputs in the range 0 to 10 V. In addition, four onboard voltage-to-current converters allow the signals to be provided as current outputs in the range 4 to 20 mA (jumper selectable).
ORDERING INFORMATION
| Type | Designation | Ordering number (PNR) |
| IOC4T | Different versions of the input/output card (for the MPC4): | |
| – Standard | 200-560-000-1Hh | |
| – Separate circuits | 200-560-000-2Hh |
IOC4T Version Update Instructions
200-560-000-113 IOC4T I/O CARD belongs to the earlier version of IOC4T in the VM600 mechanical protection system. As the requirements for environmental protection regulations, signal transmission quality, and system compatibility in industrial control systems continue to increase, Vibro-Meter upgraded and optimized the MPC4 and IOC4T cards in 2017. Therefore, during project maintenance, spare parts procurement, and system upgrades, understanding the differences between different IOC4T versions is of great reference value for procurement personnel and maintenance engineers.
In 2017, Vibro-Meter carried out a hardware upgrade for the MPC4 and IOC4T card pairs.
This upgrade mainly covers two aspects:
Meet the RoHS environmental requirements. The upgraded IOC4T module complies with the RoHS standard, reducing the use of harmful substances in electronic products and better meeting the environmental protection requirements of the European and international markets.
2. Optimize the dynamic signal output circuit
The upgraded IOC4T has redesigned the buffered raw dynamic signal output circuitry. This improvement has reduced the output impedance, enabling the dynamic vibration signals to be better integrated with modern monitoring and analysis equipment.
Versions of the IOC4T card are available with a conformal coating ("varnish") applied to the circuitry of the card for additional environmental protection against chemicals, dust, moisture, and temperature extremes.
In 2017, the MPC4 / IOC4T machinery protection card pairs were improved to (1) be RoHS compliant and (2) provide a reduced buffered dynamic signal output impedance, which required a redesign of the underlying buffered "raw" dynamic signal output circuitry. Accordingly, the different versions of the MPC4/IOC4T machinery protection card pairs in use are:
• Later versions of the MPC4 (PNRs 200-510-SSS-115, 200-510-SSS-214 and 200-510-SSS-313 or later) and IOC4T (PNR 200-560-000-114 and 200-560-000-212 or later), which are RoHS compliant and have an output impedance of 50 Ω
• Earlier versions of the IOC4T (PNRs 200-510-SSS-114, 200-510-SSS-213 and 200-510-SSS-312 or earlier) and IOC4T (PNR 200-560-000-113 and 200-560-000-211 or earlier), which are not RoHS compliant and have an output impedance of 2000 Ω.
"SSS" represents the firmware (embedded software) version and "Hh" the hardware version. "H" increments are for major modifications that can affect product interchangeability. "h" increments are for minor modifications that do not affect interchangeability.
For existing VM600 users, before purchasing the IOC4T I/O CARD, it is recommended to confirm the following information:
The current system's used IOC4T order number
MPC4 mechanical protection card version
Firmware version information
Whether a RoHS version is required
Whether a three-proof coating version is requested
Whether it involves a system upgrade or only spare part replacement
Confirming these parameters in advance helps ensure that the newly purchased IOC4T can be in line with the existing VM600 mechanical protection system, thereby reducing the on-site installation and commissioning workload.
Related product recommendations
The key modules required to build a complete VM600 mechanical protection system
200-560-000-113 IOC4T I/O CARD is mainly responsible for on-site signal input, alarm output, and data interaction with the control system. In actual projects, IOC4T is usually not operated independently but works together with multiple functional modules in the VM600 platform to form a complete mechanical protection and status monitoring system. Whether it is a new project, system expansion, equipment maintenance, or spare parts reserve, understanding the supporting products of IOC4T is very important for system selection and procurement planning.
MPC4 Machinery Protection Card
MPC4 is the core processing module of the VM600 system and is also the most common companion product of IOC4T. The vibration, displacement, and speed signals collected by the on-site sensors first enter the system through IOC4T, and then MPC4 performs real-time calculation, trend analysis, alarm judgment, and protection logic processing.
RLC16 Relay Card
The RLC16 relay card is mainly used to expand the alarm and interlock output capabilities of the system. In large-scale compression units, steam turbine units, or key process equipment, relying solely on the relay outputs of IOC4T may not be sufficient to meet the on-site control requirements. By adding the RLC16 module, the system can obtain more alarm contact outputs, which can be used for equipment shutdown protection, audible and visual alarms, interlock control, and connection with third-party systems.
IRC4 Intelligent Relay Card
Compared with traditional relay outputs, IRC4 can perform logical combination judgments based on multiple monitoring parameters. For example:
The vibration value exceeds the limit, and the rotational speed reaches the set value;
Multiple measurement points trigger the alarm simultaneously;
The interlock action is executed under specific conditions.
RPS6U Power Supply Module
RPS6U is the power module of the VM600 rack, providing the working power for the entire system.
When users purchase IOC4T, the operating status of the power module also needs to be included in the spare parts management plan, as the power module is an important component that affects the operation of the entire rack.
IQS450 Signal Conditioner
In applications such as shaft vibration monitoring, shaft displacement monitoring, and speed monitoring, the raw signals collected by the proximity probes usually need to be processed by the IQS450 before being transmitted to the IOC4T and MPC4 for analysis.
The IQS450 is capable of converting sensor signals into a standard signal format suitable for system processing. Therefore, it is a common accessory in the eddy current sensor monitoring system.
TQ402 Proximity Sensor
This sensor is mainly used for:
Axial vibration monitoring
Axis displacement monitoring
Offset monitoring
Thermal expansion difference monitoring
Speed measurement
By using it in conjunction with IQS450 and IOC4T, continuous monitoring of the operating status of critical rotating equipment can be achieved.
TQ412 Proximity Sensor
TQ412 belongs to the TQ series of proximity sensor products and can be used in industrial environments with high temperatures and high vibrations.
When this sensor is combined with the IQS450 signal conditioner, it can provide a stable measurement signal to the IOC4T, which is used for data acquisition in equipment protection and status monitoring systems.
VM600 Rack System
The VM600 Rack System serves as the installation platform for all the modules.
Modules such as IOC4T, MPC4, RLC16, IRC4, and RPS6U are all installed in the VM600 rack and achieve power distribution and data communication through the backplane.
The system can be flexibly expanded according to the number of on-site monitoring points and protection requirements.
FAQ
Q: What is the difference between 200-560-000-113 and 200-560-000-114?
A: 200-560-000-113 belongs to the earlier version of IOC4T.
200-560-000-114 belongs to the upgraded version of 2017. The main changes include:
Compliant with RoHS environmental protection standards
The dynamic signal output impedance has been reduced from 2000Ω to 50Ω
The buffer output circuit has been redesigned
Q: How can we determine whether IOC4T needs to be replaced?
A: When the following situations occur in the system, it is recommended to check the status of IOC4T:
Channel signal abnormal loss
Analog output abnormality
Alarm relay unable to operate
Digital output abnormality
Module self-diagnosis alarm
Scheduled shutdown for maintenance after long-term operation
For continuous-operating power plants, petrochemical plants, and natural gas compression stations, it is recommended that users stockpile IOC4T spare parts in advance, so that they can be replaced during planned maintenance periods, thereby reducing the subsequent maintenance cycle.
Q: Is it necessary to simultaneously confirm the MPC4 model when purchasing the IOC4T?
A: IOC4T and MPC4 are card pairs that form a complementary system. They communicate via the VM600 backplane.
Before purchasing IOC4T, it is recommended to provide:
MPC4 complete model
MPC4 order number
Firmware version
Current IOC4T model
This will help ensure the compatibility of the modules and prevent any configuration mismatches after on-site installation.
Q: Is IOC4T classified as a long-term supply product?
A: 200-560-000-113 IOC4T I/O CARD has been widely used in the VM600 Machinery Protection System for a long time, and it has a broad installation base in global power generation, oil and gas, petrochemical, metallurgy, and large industrial equipment monitoring projects. Due to the fact that a large number of VM600 systems are still in operation and maintenance stages, IOC4T continues to have demands for spare parts replacement, inventory replenishment, and system maintenance. We have been paying close attention to the market demand for IOC4T and related VM600 series products, and have been continuously supplying spot resources, including inventory pieces, project surplus goods, and immediately deliverable spare parts products. For sudden equipment failures, planned shutdown maintenance, or emergency spare parts procurement projects, we can promptly confirm the supply sources and arrange for delivery based on the inventory situation.












