Troubleshooting - Dold SAFEMASTER BH 5903 Betriebsanleitung

Troubleshooting

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:
FAILURE type 1: System failure
These failures are serious and do not allow further operation of the module.
The module can only be reset by switching the power supply off and on again.
FAILURE type 2: Function failure
This failure is concerning the function faults in conjunction with the safety
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
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
Maintenance and repairs
- The device contains no parts that require maintenance.
- In case of failure, do not open the device but send it to manufacturer
for repair.
6
BH 5903, BL 5903 / 111007 / 183