Description of Motornostix Canary^®

The Motornostix Canary^® is an intelligent condition monitoring system, utilizing a multiprocessor data logger. It is designed to be networked using an RS-485 network, packet radio network or cellular network. The network is usually controlled by a host PC, which acts as a gateway to a LAN or other Internet access point.

The Canary has sensors that measure vibration, current, stray flux, temperature, and motor speed. It also has uncommitted measurement channels that can accept standard industrial process signals such as 4-20 mA current loops, analog voltages and digital inputs.

Specification
Canary Inputs
	The Canary has 21 input channels. These are grouped into accelerometer inputs, current inputs, flux input, tachometer input and industrial process inputs. Accelerometer Inputs Drive End: X, Y, and Z accelerometer inputs + temperature Non-Drive End: X and Z accelerometer inputs + temperature Auxiliary 1: X and Z accelerometer inputs + temperature Auxiliary 2: X and Z accelerometer inputs + temperature Current Inputs There are three differential current inputs, designed for use with standard current transformers. These have a ballast resistor of 0.25 Ohm, allowing 4W dissipation. Flux Input The flux input is a single analog channel designed to take a signal from an analog Hall Effect sensor Tachometer Input The tachometer input is a single digital channel designed to take a signal from a standard industrial proximity sensor Industrial Process Signal Inputs There is one 4 – 20 mA analog current loop input and two 0 – 12V analog voltage inputs, which are uncommitted and can be used for any purpose.
Canary Inputs - Electrical Specifications
	Input specifications for the dedicated channels are as follows: Type Range Bandwidth Accuracy Accelerometer 0.00 – 5.00 V DC – 40 kHz(1) 8/10/16 bit(2) Temperature 0.00 – 1.25 V DC – 1 kHz 8/10/16 bit(2) Current 0.00 – 2.00 A(3) DC – 40 kHz(1) 8/10/16 bit(2) Flux 0.00 – 50.0 mV DC – 40 kHz(1) 8/10/16 bit(2) Current loop 0.00 – 20.0 mA DC – 40 kHz(1) 8/10/16 bit(2) Voltage input 0.00 – 12.00 V DC – 40 kHz1 8/10/16 bit2 Notes: Sampling bandwidth will change for different sampling regimes; e.g. interleaved sampling (for phase measurements) will not occur at the maximum rate. Resolution may be degraded for faster sampling rates. Current channels are differential inputs with a ballast resistor of 0.25 ?, allowing 4W dissipation.
Data Sampling
	The Canary has a wide range of sampling options available on command from the scanner. Typical waveform record lengths range from 1 kilosample to 64 kilosamples per channel. Up to four channels can be sampled simultaneously for phase measurement, with a maximum record length in this mode of 16 kilosamples. It should be noted that, in contrast to conventional online vibration measurement systems, the integration of the Canary and Scanner removes the restriction on record lengths and record numbers to the available memory in the Canary. Similarly, data analysis functions are performed during the Web-basedanalysis phase, and new options can be made available without any upgrading of the Canary unit. Sampling of Transient Events The Canary has a facility for defining a transient event, and then using that to trigger waveform sampling. For example, we can define a “start-up” event as being triggered by input currents rising above 5A; and then define the channels we would like to have sampled (in phase), which might be the three current signals and the DE X vibration. When the “start-up” event occurs, the Canary will capture the transient and save it until requested to download the data. Further useful modes include the option to specify that all defined transient events should be captured (which might result in overwriting of earlier transients; or that the first transient should be preserved until downloaded.
Canary Sensors
	The Canary has provision for a number of integrated sensor units which are designed to be attached in a standard Canary configuration. These sensors are: 2-Axis Accelerometer This accelerometer measures instantaneous linear acceleration in two (clearly marked) perpendicular axes. It also has an integrated temperature sensor. The sensor has a robust, waterproof die-cast aluminum case, and the cable is protected with an integral flexible conduit, which is designed to mate with a rapid-connect fastener on the Canary housing. Current Transformers Motornostix® makes use of custom-made split-core transformers that are designed to optimize bandwidth, accuracy and ease of installation. The current transformers may be installed in the motor switchgear or (where space permits) directly in the motor terminal boxes. They are connected to the Canary using cable shielded with a standard flexible protective conduit. Flux Sensor This is a single-axis linear Hall-Effect sensor which is designed to measure typical stray flux levels in motors. It is packaged in a waterproof diamagnetic polyurethane housing. The cable is protected with an integral flexible conduit that is designed to mate with a rapid-connect fastener on the Canary housing. Tachometer The tachometer is a standard inductive proximity sensor that has been tested for suitability as a speed sensor. A lightweight metallic target fixed to the machine's primary shaft is used as the pick-up. The tachometer cable is also protected by an integral flexible protective conduit.
Canary Sensors - Electrical Specification
	Sensor Supply Voltages Output Range Sensitivity Bandwidth Accelerometer 0.00V, +5.00V 0.00 – 5.00V 1.20V/G DC – 8 kHz (+ temperature) - (1) 0.00 – 1.25V 0.01V/?C DC – 0.2 Hz Current transformers passive 0.00 – 5.00A 0.001A/A(2) 1Hz – 1 kHz Tachometer 0.00V, +12.00V digital pulses(3) 8mm threshold DC – 500 Hz Flux sensor 0.00V, +5.00V 0.00 – 5.00V 2.5mV/Gauss DC – 1MHz Notes: This temperature sensor is powered from the integrated accelerometer. Current transformers with a ratio of 1000:1 are standard, however other ratios can be specified if required by the installation. The digital pulses have the same logic voltage levels as the sensor supply.
Canary Outputs
	The following options are available for Canary outputs. Standard interface – an RS-485 network connection supporting half-duplex multidrop communications up to 115 kbit/s. Termination options are DIPswitch settable. Radio interface – a digital spread-spectrum radio giving multichannel connections at 115 kbit/s. This can be operated licence-free worldwide in the 2.4 GHz ISM band. The range is 60 – 2000 m (line of sight) depending on antenna options and the industrial environment. Cellular network interface – a standard GSM modem can be used, offering 9.6 kbit/s. The usual requirements of GSM operation apply. There must be valid data-transmission service agreement in place with a local cellular network operator offering coverage of the Canary location.
Canary Certification
	The Motornostix Canary® has been designed to be compliant with ANSI Standard S2.17-1980: Techniques of Machinery Vibration Measurement and has been certified by other international regulatory bodies.
Canary Explosion Proof Certification
	The Motornostix Canary® is available in an explosion-proof enclosure that has been certified as Ex d IIC T4 (flameproof, for surface use, in hydrogen environments, surface temperature will not exceed 135C). The accelerometer sensors and flux sensors have been certified as Ex m II T6 (encapsulation, for surface use, surface temperature will not exceed 85C). This is one of the most stringent safety certifications obtainable, and allows these sensors to be used in essentially any gaseous environment. The tachometer sensors that are used by Motornostix® in hazardous environments are the widely-used Pepperl+Fuchs NAMUR-type intrinsically safe sensors. These are connected to the Canary through the required isolation circuits.