Flashing Codes For Status And Failure Indication
When a failure is detected the relays K1, K2 are de-energized.
The different failures are indicated by different flashing codes on the LEDs
run 1 and run 2. The failures are split into 2 groups.
Failure group 1:
System failure
On occurrence of such a failure the unit locks out and shows the failure
code, the module can only be reset by switching the unit off and on again.
These failures are only indicated on LEDs run 1 and/or run 2. At the same
time 2 different codes can be indicated on the 2 LEDs. The outputs (48
and 58) are always off in this state.
Failure group 2:
Function failure
These failure codes are only displayed on LED run 1 and output 48 while
LED run 2 remains on permanently.
The relays K1, K2 are de-energized in this state, the module is still active
and the relays can be activated by pressing the start button after the failure
has been removed.
System failure: (indicated only on LEDs run 1 and/or run 2)
No.*
Description
)
0
internal failure (LEDs off)
5
Faulty setting
6
Undervoltage detection
6
Overvoltage detection
7
Input failure
Failure on output contacts
8
K1, K2
9
10
Internal failure
11
12
Internal failure
13
*) No.: number of flash pulses in a series
Measures and notes
If both LEDs are off the relay is
defective and has to be sent
back for examination.
1) The switches on both
channels are not identically
2) The selected setting is not
allowed.
Left LED is flashing when the
voltage drops under the allowed
level (< approx. 0.85 UN). After
returned to normal a reset is
made (similar to power up of the
unit).
The right LED is flashing when the
voltage rises over the allowed level
of > approx. 1,15 UN + 5 % residual
ripple.
1) A short circuit occurred on
the start button or machine
contact input.2)
2) Both signals of one LC are
not identically (short circuit,
broken wire of defective LC)
Please check the output K1, K2
circuit and contact current,
relay has to be repaired.
Please try to evaluate the
circumstances that led to this
fault and check with the
supplier or manufacturer.
The relay has to be repaired.
Function failure: indication on LED run 1 and output 48
No.*
Description
)
1
LC failure
2
Failure on start button
Protective operation failure
3
in feed back circuit
Stepping operation
3
contact failure
Muting failure
4
(blocked LC)
Muting failure
4
(lamp)
Stepping operation
5
(key failure)
*) No.: number of flash pulses in a series
Status indication
LED run 1 and output 48 are flashing fast with 3 Hz
Muting operation:
Override possible
Stepping operation:
Wait for access
34
Measures and notes
1) One LC has been interrupted.
2) All LC inputs that are not
used must be bridged:
LC 2: S21-S22, S23-S24
LC 3: S31-S32, S33-S34
1) During start up of the unit
and initialising the start
button must not be pressed
2) The start button must not
be pressed longer than 3 s.
1) An operating mode with feed
back circuit ist selected and and
the circuit connected to S41-S42
is not closed before activation
of K1, K2.
1) The machine contact is not
closed in initial position (waiting
for start)
2) With contact type 1 the machine
contact was not closed at the end
of the required first interruption
of the light curtain.
1) The selected max. muting
time had been exceeded
(muting lamp on).
2) The muting lamp is not
connected between terminals
48 and M1 and M2.
3) The necessary bridge is not
connected between terminal
S41-S42..
4) The muting lamp is defective.
5) The measuring circuit for the
muting lamp is defective,
the unit has to be repaired.
1) Both contacts of the key switch
to select the number of steps
are open
Minimum one muting sensor is
active, LC 1 is interrupted and the
start button is pressed. After 3 s
with activated start button the
override is started for max. 12 s.
The unit is waiting for the required
number of interruptions of the LC
so that the safety relays can be
activated.
BH 5902/01MF2 / 26.01.21 en / 296A