Fault Indication By Flashing Code; Application Examples - Dold SAFEMASTER BH 5903 Datenblatt Und Betriebsanleitung

Fault Indication By Flashing Code

The failure codes are displayed by a flashing sequence of the upper yellow LEDs
run 1, run 2. Flashing frequence: env. 0.5 s on, 0.05 s off, end od the sequence:
env. 2 s off. It is possible that the two processors show different failure codes.
If a failure is displayed, the relays K1 and K2 are switched off.
The module BH 5904 shows 2 types of failure codes:
1. FAILURE type 1:
These failures are serious and do not allow further operation of the modu-
le. The module can only be reset by switching the power supply off and on
again.
2. FAILURE type 2:
This failure is concerning the function faults in conjunction with the sa-
fety controller. The module can be reset by pressing the reset button.
Failure type 1
N * Description
o )
Internal module failure
0
(LEDs are continuously off)
Undervoltage detection
6 or
Overvoltage detection
7 Input failure
8 Failure on relay output
9
10 Internal module failure
11
12
13 Internal module failure
14
*) No.: Number of flash pulses in a series
Failure type 2
N * Description
o )
1 E-stop acitvated
2 Fault on reset button
4 Switch off fault
6 Feedback failure
*) No.: Number of flash pulses in a series
E. Dold & Söhne GmbH & Co. KG • D-78120 Furtwangen
dold-relays@dold.com • www.dold.com
Mesures et conseils
If both LEDs stay off, the module
is defective and has tobe repai-
red.
1) Left LED is flashing:
The supply voltage dropped
below the permitted value
(< approx.0.85 U )
N
2) Right LED is flashing:
The supply voltage went over
the permitted value
(> approx.1.15 U + 5 %
N
residual ripple)
A short circuit has been detected
on the inputs ofthe unit ou the 2
signals of a 2-channel sensor
(feed backcircuit, start signal
ofcontroller, valve) do not corres-
pond (short circuit,broken wire or
other fault)
Output relay defective
1) Check circuit and current.
2) The relay service life is cros-
sing
Please try to evaluate the
circumstances that lead to this10
fault and check with the supplier
or manufacturer.
The module has to be repaired
Mesures et conseils
1) The start button must no be
pressed longer then 3 sec.
2) During start up of the unit
and initialising the start
button must not be pressed
The unit showed already a
fault before switching off
Both LED are flashing
Feedback on S41/S42 not closed

Application Examples

L+
E-stop
A1(+)
S11 S13 S14 S12
A2(-)
L-
BH 5903.03/00000 with one E-Stop loop (2-channel), automatic restart
after phase failure and manual restart after E-stop.
Automatic reset ist only active when no E-Stop was operated before pha-
se failure.
L+
E-stop E-stop
A1(+)
S11 S12 S13 S14 S41
A2(-)
L-
BH 5903.03/00020 with two E-Stop loops (single-channel), automatic re-
start after phase failure and manual restart after E-stop.
Automatic reset ist only active when no E-Stop was operated before pha-
se failure.
Max. Cat. 3, PL d because of faullt exclusion in the wiring.
L+
E-stop
A1(+)
S11 S13 S14 S12
A2(-)
L-
BH 5903 with external contact reinforcement
•
Bregstraße 18 • Phone +49 7723 654-0 • Fax +49 7723 654356
16
Forcibly guided
safety contacts
On
S43 S44
S41 S42
BH5903.03/00000
Forcibly guided
safety contacts
On
S43 S44
S42 13
BH5903.03/00020
14
K3
Forcibly guided
safety contacts
On
K4
S41 S42 S43 S44
13
BH5903.03/00000
BH 5903, BL 5903 / 26.01.21 en / 297A
13 23 33
14 24 34
M7788_b
23 33
24 34
M7789_b
23 33
14 24 34
K3 K4
M10581_a