5
AZM 200
Operating instructions
Solenoid interlock
EN
6. Diagnostic functions
6.1 Diagnostic LED's
The solenoid interlock signals the operational state as well as errors
through three coloured LED’s installed on the front side of the device.
green
Supply voltage on
red
Fault (s. Table: flash codes of the red diagnostic LED
yellow
Operating condition
6.2 Solenoid interlock with conventional diagnostic output
The short-circuit proof diagnostic output can be used for central
visualisation or control functions, e.g. in a PLC.
The diagnostic output is not a safety-related output!
Depending on the chosen variant, the following diagnostic signals
are transmitted:
1P2P variant:
OUT
guard door closed
1P2PW variant:
OUT
combined diagnostic signal: guard door closed and solenoid
interlock locked
Error
Errors, which no longer guarantee the function of the AZM 200 solenoid
interlock (internal error)s cause the safety outputs to be disabled
within the risk time. Any error that does not immediately affect the safe
functionality of the solenoid interlock will lead to a delayed shut-down
(refer to table 2).
After fault rectification (fault at output Y1 or Y2, temperature fault), the
fault is acknowledged by opening and relocking the relevant guard door.
The safety outputs enable and allow a restart. An interlocking chain
must be permanently "locked" to enable the reactivation.
If more than one fault is detected at the safety outputs or a
cross circuit is detected between Y1 and Y2, the solenoid
interlock will be electronically locked and a normal fault reset
will no longer be possible. To reset this type of interlocking,
the solenoid interlock must be isolated from the power supply
after elimination of the error causes.
Error warning
A fault has occurred, which causes the safety outputs to be disabled
after 30 minutes. The safety outputs initially remain enabled. This
enables the shutdown of the process in a controlled manner. An error
warning is deleted in the slave when the error cause is eliminated.
Behaviour of the diagnostic outputs of the W variant
(Example: power to unlock version)
Input signal magnet control
IN
Normal sequence, door was locked
OUT
Door could not be locked or fault
OUT
Key
Safety guard open
Safety guard closed
Unlock safety guard
Safety guard locked
Locking time: 150 ... 250 ms,
typically 200 ms
Safety guard not locked or fault
Evaluation of the diagnostic outputs of the W variant
SPS
AZM 200
I N
O U T
E 1 . 0
A 1 . 0
A 1 . 0
E 1 . 0
A 1 . 0
E 1 . 0
M 1 . 0
M 1 . 0
M 2 . 0
M 2 . 0
&
&
A 1 . 0
E 1 . 0
&
A 1 . 0
E 1 . 0
&
Door can be locked
Door can be locked
Power to unlock: IN = 0 = locking
Door is locked
Door is locked
Power to lock: IN = 1 = locking
Table 1: the diagnostic function of the AZM 200 solenoid interlock