Magnetics that count
BOGEN Magnetics GmbH
· Potsdamer Straße 12 - 13 · 14163 Berlin · Germany
Fon +49 (0) 30 81 00 02 - 0 · Fax +49 (0) 30 81 00 02 - 60 · [email protected] · www.bogen-magnetics.com
AKS17 ins
tallation and oper
ation ins
truction manual (2021/06/16)
4/14
Mode of operation
The sensing head with its sensor is mounted on the machine part whose position is to be measured. The
measuring magnetic surface is mounted along the measuring distance. On the magnetic tape alternating
magnetic north and south poles are positioned with a regular distance. The magnetic hall sensor cells in the
sensing head are scanning the magnetic poles on the tape contact-free.
Permissive linear and rotation speed see technical data sheet of the respective type on the website:
http://www.bogen-magnetics.com/en/bogen/company/download.html
Digital absolute output:
The sensing head with digital absolute output signal converts the analog signals to an absolute information
in BISS-C or SSI.
Digital incremental output:
The sensing head with digital incremental output signal converts the analogue signals into digital A/B and Z
pulses and transmits them to the controller. The two digital signals A and B are electrically phase-shifted by
90°. The sign of the phase shift represents the direction of movement of the sensor. Every change of A or B
(rise to fall or vice versa) is a count for the period counter (up/down counter). If signal A is preceding signal
B, the counter increases. If signal B is preceding signal A, the counter decreases. The Z pulse appears every
time when passing the zero point. The controller thus knows at all times the increment position, without
having to query the sensing head periodically (real-time capability). Therefore, after an interruption of the
power supply the sensing head can still read its correct absolute position on the scale.
Assembly and Installation
During assembly utmost cleanliness is required. Device parts have to be degreased thoroughly before gluing.
During installation the mounting tolerances and the position of the measuring point have to be observed
respectively implemented as stated in the datasheet.
Measurement options
The AKS17 comes with two measurement options.
• option 1 is a sensing head with parallel orientation of AKS17 chip
• option 2 is a sensing head with perpendicular orientation of AKS17 chip
Delivery condition
The AKS17 is supplied with a connector Molex 501568-1207 or with a FFC as an alternative for Molex.
Programming Device
Introduction
Each AKS17 requires a calibration process in assembly. It is recommended that the calibration is performed
across the whole working range of the sensing solution.
The calibration process consists of an analog calibration where the different sensors in the sensing head will
be optimized for best performance and a nonius calibration where the sensing head is optimized over the
