SEW-Eurodrive DR 315 Series, Руководство по эксплуатации

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7
Inspection/maintenance
Inspection/maintenance work diagnostic unit /DUE
Operating Instructions – AC Motors
184
Calibrating the infinite value
Before you can install the sensor in the brake, the electronics must be calibrated to the
actual cable length. During calibration of the infinite value, electronics is adjusted to
the sensor cable length. Electronics is reset and previous settings are overwritten.
The sensor must be removed from the brake for the following steps.
Procedure to calibrate the infinite value for the sensor:
1. Make sure that no metallic objects are within a 10 cm radius from the sensor head.
The mounting springs may be in contact with the back of the sensor head during
calibration.
2. Connect the supply voltage to INF (8k) and AGND (9k) for approx. 5 s. You can
use GND (10k) as reference potential instead of AGND (9k). The evaluation unit is
supplied via the calibration input during calibration.
The analog output OUT1 signals 0 mA during the calibration procedure.
The infinite value was successfully calibrated when OUT1 (4k) displays 20 mA. The
red LED briefly flashes once per second as visual signal.
The corresponding wiring diagram for the calibration process.
+24 V GND
DUE-1K-00 21195609
O
FF
1
4s 5s6s
G
N
D
1
A
1
B
1
4k 5k 6k 7k 8k 9k 10k 11k
O
U
T1
ZE
R
O
A
G
N
D
G
N
D
D
C
24V
IN
F
FC
T1
W
E
A
R
1
14975067787
During calibration, the digital outputs WEAR1 (6k), FCT1 (5k) send a 0 signal which
may lead to error messages (wear limit reached).
25851535/EN – 02/2019