Motors
Trend rising overall vibration caused by developing unbalance, misalignment or mechanical looseness on suitable constant-speed rotating equipment.
ifm · Condition Monitoring
ifm VTV Vibration Transmitters
Simple, continuous overall-vibration trending via a standard 4–20 mA signal. VTV is a practical retrofit route when the PLC, frequency converter or monitoring system already has an analogue input and detailed vibration diagnostics are not required at the sensor.
4–20 mAv-RMS10–1,000 Hz1 measurement axisISO 20816 route
Signal4–20 mAContinuous analogue vibration trend
Measured valuev-RMSOverall vibration velocity
Frequency10–1,000 HzCurrent VTV family selection range
Harsh environmentUp to 125 °CSelected versions; verify exact model
Straightforward machine trending
VTV for controller-based monitoring
The transmitter converts overall vibration severity into a standard analogue signal. That keeps the field device simple and puts warning, alarm and trend logic in the PLC, frequency converter or monitoring system.
Pumps & fans
Use the analogue trend to detect gradual deterioration before machine vibration reaches unacceptable levels.
Retrofit installations
Useful where an existing analogue input is already available and adding IO-Link or separate diagnostic electronics would add unnecessary complexity.
Important: VTV is an overall-vibration transmitter, not a frequency-selective diagnostic system. It is best for trending severity—not for locating a specific bearing fault frequency or performing root-cause analysis.
Simple architecture
Vibration severity directly into the PLC or drive
VTV continuously outputs the RMS vibration velocity as a 4–20 mA signal. The analogue value can be scaled, trended and alarmed in a suitable control or monitoring system.
MachineMotor / pump / fan
→
TransmitterVTV
→
Signal4–20 mA
→
ControlPLC / VFD / monitor
Easy retrofitStandard analogue current signal requires no dedicated IO-Link network.
Controller-owned limitsWarning and alarm thresholds can be managed in the customer control architecture.
Current VTV routes
Select measuring range and environmental variant
VTV122
0…25 mm/s
Standard current VTV route for general vibration severity monitoring.
- 10…1,000 Hz
- 1 × 4–20 mA
- Set-screw mounting
- Selected version data: -30…125 °C, IP67/IP68/IP69K
VTV121
0…50 mm/s
Higher overall-vibration range for applications where 25 mm/s full-scale is insufficient.
- 10…1,000 Hz family route
- 1 × 4–20 mA
- Verify exact environmental data before selection
VTV12A
Hazardous-area version
VTV variant for applications requiring the documented ATEX II 3D / II 3G route.
- 0…25 mm/s
- 10…1,000 Hz
- 4–20 mA
- Confirm zone and complete approval conditions
Technical overview
Key VTV family data
Overall vibration is intentionally simple.
VTV is well suited to trending machine vibration severity when the host controller performs the alarm logic. If the requirement includes multi-axis condition indicators, bearing analysis or frequency-selective monitoring, review another ifm platform.
Measured quantityRMS vibration velocity (v-RMS)
Analogue output4…20 mA
Frequency range10…1,000 Hz
Measuring range0…25 mm/s or 0…50 mm/s by model
Measurement axes1
MountingSet screw; exact thread / supplied hardware by model
Selected VTV122 environment-30…125 °C; IP67 / IP68 / IP69K
Choose the right depth
VTV, VVB or VSE?
| Need | Route | Reason |
|---|---|---|
| One simple continuous overall-vibration value | VTV Best fit | Simple 4–20 mA integration and controller-side trending. |
| Smart sensor with multiple condition indicators and IO-Link | VVB / VVB3 | Local condition processing, temperature and richer machine-health data. |
| Multiple accelerometers, frequency-selective diagnosis, complex machinery | VSE | Programmable edge diagnostics in time and frequency domains. |
Requirement capture
To confirm before selecting VTV
Machine & rpmMachine type, shaft speed and whether speed varies significantly.
Expected vibration rangeChoose 25 or 50 mm/s full-scale based on the machine and alarm philosophy.
Analogue inputAvailable 4–20 mA PLC, VFD or monitoring input and scaling.
EnvironmentTemperature, washdown and IP requirement.
Hazardous areaZone/classification and approval requirements if VTV12A is considered.
Monitoring goalOverall trend only or need for fault-specific diagnostic information.