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Inductive Guidance Sensor
HG G-19370 | HG G-19380

The inductive guidance sensor HG G-193×0-B is used for the inductive track guidance of Automated Guided Vehicles (AGV). Up to 5 different guide wire frequencies may be detected and evaluated simultaneously. Alternatively a ground installation for the contact-less inductive energy transmission with two wires (energy track) can be used for the track guidance.

The guide wire frequencies to be detected are configured via the USB interface. The guidance sensor is available in different variants for common energy tracks (s. table). Additionally an incremental encoder for the measurement of distance or speed may be connected directly to the sensor.

A frequency generator feeds a current into a guide wire installed in the ground. Along this wire an alternating magnetic field is generated. When the sensor is moved along the guide wire two characteristic voltages are induced and evaluated. Thus for each frequency a sum and difference signal is calculated. Usum is used to detect whether a track is available (signal Detect when a threshold is exceeded). Udiff shows maxima at both sides of the wire and crosses zero directly above the wire. Udiff is used to control the vehicle.

Overview

Inductive guidance sensor for the track guidance of automated guided vehicles (AGV)
5 programmable simultaneously usable frequencies (2 – 20 kHz)
Alternatively track guidance along an existing ground installation for the contact-less inductive energy transmission (energy track), see table Variants
Works with single wire and double wire installations
Reading height: 40 – 200 mm, nominal reading height 60 mm, customizable via programmable gain
IP 64
USB interface (configuration via USB Virtual Port Driver)
Possibility to connect and evaluate an incremental encoder

Variants

HG G-19370	ZC	CAN Bus	Energy track 20/25 kHz, 140 mm wire spacing, 85 A
HG G-19370	YC	Profinet	Energy track 20/25 kHz, 140 mm wire spacing, 85 A
HG G-19380	ZC	CAN Bus	Energy track 140 kHz, 110 mm wire spacing, 45 A
HG G-19380	YC	Profinet	Energy track 140 kHz, 110 mm wire spacing, 45 A

Technical data

Dimensions (W x H x D)	156,5 mm x max. 70 mm x 31 mm
Casing	Polycarbonat (PC)
Weight	approx. 200 g
Protection class	IP 64
Reading distance	40 – 200 mm
Nominal reading distance	60 mm (preset) Different reading distances via programmable gain
Relative humidity	95 % @ 25° C (without condensation)
Temperature ranges	Betrieb: -40° C to +50° C / Storage: -40° C to +70° C
Voltage supply	5V (USB, configuration) / Nominal (vehicle): 12 VDC – 24 VDC / Maximum: 10 VDC – 30 VDC
Current consumption	• HG G-19370ZC/HG G-19380ZC (CAN): 60 mA @ 24 V • HG G-19370YC/HG G-19380YC (PROFINET): 110 mA @ 24 V
Frequencies	• 5 programmable guide wire frequencies, simultaneously usable, 2 – 20 kHz, 100 Hz resolution • 1 programmable frequency for an energy track
Energy track	Guidance sensor variants for common energy tracks
Measuring rate	100 Hz (every 10 ms a new value is calculated)
Connectors	3x M12 circular connectors
USB	Configuration / Firmware Update (emulation of a serial interface)
Incremental encoder	Input for the processing of an incremental encoder. All incremental encoders can be used that have a switching threshold > 10 V between high level and low level (typically 24V incremental encoders).