Manual
Weld Seam Detection System R4000 SND40
for Tubes, Cans and Drums
Technical data
B0059001 / Rev. 2.3
90
ROLAND ELECTRONIC GmbH · Otto-Maurer-Str. 17 · DE 75210 Keltern · Phone +49 (0)7236-9392-0 · Fax +49 (0)7236-9392-33
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9.1.2 Block diagram SND40 with combination sensor
A system consists of a control unit SND40, a sensor and a sensor cable. The block diagram
exemplarily shows a system with leakage flux module (4) and eddy current module (6). To it a
combination sensor (7) for round materials is attached.
Description of block diagram:
1: KM: The communication module is
the interface to the operator and
stores the system and program files.
2: Power: The power supply module
supplies all internal modules and the
sensors with electrical energy.
3: PM: The processor module takes over
the detection and positioning of the
welding seam and controls the PLC
interface.
4: MF: The leakage flux module is the
"front end" electronics to the Hall
sensor and supplies the magnetizing
current for the leakage flux and
combination sensors. In addition a
sensor (check signal) with current exit
(0… +/-20mA) can be attached. This
module is only present with SND40
devices with the
numbers… MF… in the designation.
5:
without representation: Motherboard,
on which the modules are attached.
6: EC: The eddy current module is the
"front end" electronics to the eddy
current sensor. This module is only
present with SND40 devices with the
numbers… EC… in the designation.
7: NS9/12-EC…: combination sensor
consisting of magnetizing coil, (9) Hall
sensor and (10) EC sensor.
8: Round specimen, e.g. tube.
9:
Hall sensor for measuring the
magnetic leakage flux. Unit is
integrated in the sensor element of the
combination and leakage flux sensors.
10:
EC sensor (eddy current probe) for
generating and measuring the
alternating field. Integrated in the
sensor element of the combination
and EC sensors.
11:
KNS9S: Sensor cable for combination
and leakage flux sensors.
12:
CECM18S: Sensor cable for
combination and EC sensors / probes.
Fig. 45: SND40-EC-MF Block diagram
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Power
KM
MF
PM
EC
Hall-Sensor
EC-Sensor
KNS9S
CECM18S
SND40-EC-MF
NS9/12-EC-xxx
2
3
1
4
6
7
8
9
10
11
12
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