7
Inspection/maintenance
Inspection/maintenance work diagnostic unit /DUE
Operating Instructions – AC Motors
186
Cable routing
Prevent the cable from colliding with the fan cable. If necessary, attach the cable to
the included clamping strap [157] on the brake using cable ties.
Calibrating the zero value
During calibration of the zero value, the current working air gap with released (open)
brake is written in the evaluation unit. The electronics is reset and previous settings
are overwritten. You can save the zero value at any time without changing the infinite
value.
Procedure during calibration of the zero value:
1. Open the brake.
2. Apply the supply voltage to ZERO (7k) and AGND (9k) for approx. 3 seconds.
Electronics is in calibration mode. You can use GND (10k) as reference potential
instead of AGND (9k). The evaluation unit is supplied via the calibration input dur-
ing calibration.
The evaluation unit saves the smallest working air gap of the brake. Each write pro-
cess is indicated by a brief flashing of the red LED.
The activated calibration mode is indicated by the following LED state:
LED
State
Green [6]
Off
Red [6]
Flashing (2 Hz)
+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
14977696651
During calibration, the digital outputs WEAR1 (6k), FCT1 (5k) send a 0 signal which
may lead to error messages (wear limit reached).
The analog output OUT1 (4k) signals 0 mA during the calibration procedure. After suc-
cessful calibration, the value is saved. The output has 4 mA with released brake. If a
smaller value is available within 3 seconds, the last value is deleted and the new value
is saved. The 4 mA at the output remain unchanged.
25851535/EN – 02/2019
Содержание DR 315 Series
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