26
EN
5 . Inputs and outputs function
5 .1 Mode of operation of the safety outputs
The process guard locking with safety function has 2 short-circuit-proof safety outputs (OSSD)
Pin 4 and Pin 7, which can switch a max. load of 100 mA per channel. The safety outputs
switch through under the following conditions:
• The correct anchor plate is detected in the detection zone (protective device closed).
• A high signal is present at both safety inputs Pin 4 and Pin 7.
• No error is detected.
The process guard locking with safety function switches off under the following conditions:
• There is no or the incorrect anchor plate in the detection zone.
• A low signal is present at one of the two inputs.
• An error is detected.
The two safety outputs can be connected to the inputs of a safety controller under the
following conditions:
• The input must be suitable for clocked safety signals (OSSD signals); the control unit must
tolerate test pulses on the input signals with a length of up to 0.3 ms, see Section 2.9
Technical data. Please observe the instructions of the control unit manufacturer. Wiring
examples can be found in Section 10.1.
The current status of the safety outputs can be checked at any time via the optional built-in
Bluetooth interface and the "HOLDX-Manager" software.
5 .2 Safety inputs
The process guard locking with safety function has 2 safety inputs Pin 2 and Pin 6.
• If the process guard locking is used individually, the safety inputs must be connected
to +24 VDC.
• When using the process guard locking in a series connection, the safety inputs of the
first sensor are connected to +24 VDC - the safety inputs of the following process guard
locking are connected to the safety outputs of the previous sensor. Please also refer to
Section 2.6 Series connection
• Pulses with a duration of max. 900 μs are tolerated at the safety inputs. Wiring examples
can be found in Section 10.1.
The current status of the safety inputs can be checked at any time via the optional built-in
Bluetooth interface and the "HOLDX-Manager" software.
5 .3 Reset input,
only with version HOLDX RS1-12P
Monitored reset input
Connect an external start button of your machine control to the reset input. The reset input
is only recognized as correctly set, if at least one valid start pulse is detected after the sensor
has been actuated and the safety inputs have been set. The valid start pulse is detected if
a falling edge is detected after a rising edge within the permissible start pulse duration of
between 30 ms and 5 s. Examples can be found in Section 10.1.
5 .4 Input magnet on
The process guard locking with safety function has a "Pin 8 input" to switch on the magnet.
When a high signal is applied at the input, the magnet directly builds up the magnetic field,
independent of the door position.
The magnet input can only be activated 5 s after switching on the voltage supply.
Attention
Possible danger of crushing must be taken into account in the risk assessment.
If required, the function that the door is closed before the magnet builds up its magnetic
field can be set with a functional module in the standard PLC.
Functional modules for various PLC systems are available under www.safety products.de.
The magnet can be switched on and off manually, e.g. during the commissioning phase
or during maintenance operation, using the optional built-in Bluetooth interface and the
"HOLDX-Manager" software.
5 .5 Diagnosis output
The short-circuit-proof diagnosis output “Serial out Pin 5” can be used for control and
diagnosis tasks.
Note
The diagnosis output is not a safety-related output
The functional modules for various PLC systems are available under
www.safety products.de.
The current status of the diagnosis output as well as the individual configuration can be
checked or configured at any time via the optional built-in Bluetooth interface and the
"HOLDX-Manager" software.
Depending on the PLC used, it may be necessary to adjust the pulse width (T
H
, T
L
) for optimal
communication with the PLC. This can be set in a range from 5 to 50 ms. The pause time
until the next cycle is always the same at 90 ms.
Pulse diagram
Fig.15:
4 x T
H
50 ms
T
H
T
L
T
H
T
L
telegram pause
1 diagnosis signal cycle
1 Clock
50 ms 50 ms 50 ms
Pulse diagram - factory setting: Example for clock 2x.
Configuration T
H
= T
L
Telegram pause
Factory setting
50 ms
4 x T
H
Individual
5 ... 50 ms
4 x T
H
6 . Operating states and diagnosis
6 .1 Switching and operating states
OSSD input
Pin 2 + Pin 6
Magnet
ON Pin 8
Door position
Magnetic flux
undercut
Switching
distance in
limit range
OSSD output
Pin 4 + Pin 7
Diagnosis
output Pin 5
On/off
Off
Open
Off
Clock 1x
Off
Off
Closed
Off
Clock 2x
On
On/off
Closed
On
Clock 3x
On
On
Open
Off
Clock 4x
Off
On
Closed
Off
Clock 5x
On
On
Closed
On
24 V
Off
On
Closed
x
Off
Clock 6x
On
On
Closed
x
On
Clock 7x
Table 1: Switching and operating states