Tower Oszillation Monitor GEL 3010
2-axis tower oscillation monitor in compact design Integrated safety relay switches on reaching the adjustable limits Maintenance and wear-free operation due to MEMS acceleration sensors Measuring system is not subject to ageing, is insensitive to temperature fluctuations, dirt or condensation Redundant system possible due to usage of 2 tower oscillation monitors
Measuring direction X and Y Resolution 0.01 m/s2 Extended temperature range -40 ºC to +85 ºC Interfaces:
- Adjustable safety relay output
Protection class IP 67 Installation altitude 4000 m
Suitable for all standard applications and also for real heavy-duty applications Temperature behaviour stable over the long-term Full function in case of condensation: dew-point resistant!
Field of application
Construction and design
The tower oscillation monitor GEL 3010 is designed for monitoring
oscillations and vibration on machines and installations
"in accordance with DIN ISO 10816".
MEMS acceleration sensors, safety relay and EtherCAT or CANopen interface are integrated into a compact housing made of anodised aluminium. The state of the vibration monitor can be checked on-site using 6 diagnostics LEDs. The tower oscillation monitor contains a positively driven switched output that can be integrated into an existing safety chain. A redundant system can be realised by using two tower oscillation monitors.
The GEL 3010 is suitable for standard and heavy-duty applications, it also withstands aggressive media and impresses with a long, maintenance-free service life. It can be used in an expanded temperature range from -40 ºC to +85 ºC.
The tower oscillation monitor is available with an EtherCAT
interface or a CANopen interface.
The switched output is a positively driven, floating safety relay with one normally closed contact and one normally open contact. In the de-energised state and in case of an error, the relay is open. The switching points (trigger limits) and the trigger delay are adjustable.
The tower oscillation monitor GEL 3010 measures the accelerations
in the X and Y direction using so-called MEMS
acceleration sensors, micro-electro-mechanical systems
that operate like spring-mass systems.
In principle a freely moving mass is suspended in the MEMS module; this mass is held in the middle position between two reference electrodes by springs. The mass forms the moving electrode of two capacitors.
The moving mass is accelerated by oscillations and vibration. It moves and the distance between the middle electrode and the reference electrodes changes, as a consequence the electrical capacitance of the capacitors also changes. The electronics measure this change in the capacitance and compare the values measured with the limits set. If the acceleration reduces, the springs return the moving mass to its original position. If the acceleration is zero, the installation has reached the required speed or it is not in operation, as a result the spring-mass system is at rest.
The GEL 3010 contains two acceleration sensors that measure the movement in both the X and Y direction. This configuration makes it possible to test the sensors internally during the self-test.
After power up the GEL 3010 checks the internal acceleration
sensors and the relay during the self-test. Once the device
is ready for operation, the status is sent to the installation
control system via the bus interface.
The continuous self-test function in the GEL 3010 ensures both acceleration sensors are tested during operation. A defective sensor is reliably detected and the device signals the failure of the sensor via the field bus.
During operation a self-test can be triggered by the installation control system using the field bus protocol. For this purpose the relay is switched once, as a result the safety circuit is opened.
To ensure an interruption-free safety circuit even during the self-test, two tower oscillation monitors should be connected in parallel. In this case the self-test triggered via the field bus must not be initiated on both devices simultaneously.
The GEL 3010 can be permanently wired in series with other
monitoring devices in the safety chain. If a monitoring device
triggers, the safety chain is interrupted and, if necessary,
emergency braking initiated.
On reaching the limit set, the safety relay in the tower oscillation monitor can be switched and the safety chain opened. In parallel the critical state is signalled to the installation control system via the field bus. In this way dangerous, superimposed resonances are reliably detected and the installation shut down.
By using several tower oscillation monitors in the safety chain, different safety concepts can be realised:
Onshore Usage of two devices provides redundancy by means of cross-comparison
Offshore Usage of three devices ensures safe operation even in case of the failure of a device
|Measuring axes||2 (X, Y direction)|
|Measuring range||± 20 m/s2 (2g)|
|Resolution||± 0.01 m/s2|
|Accuracy||± 0.05 m/s2 typical|
|Zero point offset(1)||± 0.5 10-3 m/s2K|
|Cross-sensitivity||≤ 2 %|
|Operating voltage||15 to 36 V DC|
|< 2.4 W
< 3.5 W
|Scanning rate||5 ms|
|Digital interfaces||CANopen, EtherCAT|
|Relay||1 x NC, 1 x NO,
positively driven, floating,
Position in the de-energised state: open
Position in case of error: open
|Relay nominal values||24 V DC / 0,5 A|
|Relay minimum current||≥ 5 mA at 24 V DC|
|Trigger limit X direction||± 2 m/s2 (0.2g)|
|Trigger limit Y direction||± 2 m/s2 (0.2g)|
|Trigger delay||0.05 s|
|Inhibit time after relay triggering||30 s|
|Cut-off frequency low-pass filter||10 Hz|
|Housing material||Anodised aluminium|
|Dimensions (WxDxH)||156 x 76 x 46 mm|
|Assured operating temperature range||-40 ºC to + 85 ºC|
|Storage temperature range||-50 ºC to + 85 ºC|
|Installation altitude||4000 m|
|Protection class in accordance with DIN 60529||IP 67|
|Vibration resistance (DIN EN 60068-2-6)||200 m/s2, 10 ... 2000 Hz|
|Shock resistance (DIN EN 60068-2-27)||1000 m/s2, 11 ms|
|EMC||EN 61000-6-1 to 4|
|Insulation strength||Ri > 1 MΏ, at a test voltage of 500 V AC|
|Max. relative humidity of air||99 %|
Overview of connections and status monitoring,
Overview of connections and status monitoring
|Identifier||Function||LED status indication|
|X1 RELAY||Relay||off||Triggered (SC open)|
|green||Ready (SC closed)|
|red||24 V power supply in order|
|orange||Internal device power supply in order|
|DIAG||Device status||green brighter/dimmer||Ready (SC closed)|
|green flashing||Bus communication interference (SC opened)|
|red/green flashing||Relay has triggered, switching back on not yet allowed
|X3 IN||Bus input||green/red||Function dependent on the interface|
|X4 OUT||Bus output||green/red||Function dependent on the interface|
|STATUS||Bus status||green/red||Function dependent on the interface|
Switching variants within the safety chain
Technical data — interfaces
Pin layout — interfaces
Technical data — interfaces
|Device profile||CoE (CANopen over EtherCAT) DS 401||CANopen DS 401|
|Connection||D-coded M12 connection and diagnostics
|A-coded M12 connection and diagnostics
|Parameter||Limits in X and Y direction, trigger delay, relay
inhibit time, cut-off frequency (low-pass filter)
|Limits in X and Y direction, trigger delay,
relay inhibit time, cut-off frequency (lowpass
|Sensor ID||Automatic address assignment||LSS in accordance with DS 302|
|Operating temperature||-40 ... +85 ºC||-40 ... +85 ºC|
Dimensional drawing GEL 3010
Type code GEL 3010
Customer-specific modifications to mechanical and electrical features are in principle possible.
|CANopen connection cable 10 m, 5-pin plug / flying lead with ferrules||BK 2100|
|CANopen connection cable 2 m, 5-pin plug / flying lead with ferrules||BK 2101|
|CANopen connection cable 10 m, 5-pin socket / flying lead with ferrules||BK 2102|
|CANopen connection cable 2 m, 5-pin socket / flying lead with ferrules||BK 2103|
|CANopen connecting cable 10 m, 5-pin socket/plug||BK 2104|
|CANopen connecting cable 2 m, 5-pin socket/plug||BK 2105|
|CANopen, mating connector 5-pin socket, A-coded||FS 3020|
|CANopen, mating connector 5-pin plug, A-coded||FS 3021|
|CANopen terminating resistor M12||FS 3040|
|Power supply connection cable 10 m, 4-pin A-coded socket/ flying lead with ferrules||FS 3019|
|Power supply connection cable 2 m, 4-pin A-coded socket / flying lead with ferrules||FS 3018|
|EtherCAT, mating connector, M12, 4-pin plug, D-coded||FS 3039|
|Relay output connection cable 10 m, 4-pin socket D-coded / flying lead with ferrules||FS 3075|
|Relay output connection cable 2 m, 4-pin socket D-coded / flying lead with ferrules||FS 3074|
|Relay output mating connector, M12, 4-pin socket, D-coded||Upon request|