EN
25
2 .4 Mode of operation
Fig. 1:
Safety inputs
CAN
CAN H
CAN L
OSSD2 IN
OSSD1 IN
+24
V DC
+24
V DC
Siche
rheitssensor
coded
M
ag
net
A
nchor pl
ate
Ac
tu
ator
D
ata
Clock
1
0
V
3
2
4
7
8
5
6
1
X2
X1
0
V
3
Serial IN
5
6
Master
HOLDX RL2-CS-P8-...-B
LED diagnosis
Serial OUT
OSSD1 OUT
OSSD2 OUT
2
4
7
8
Safety outputs
D
ata
Clock
Error
Gate
Lock
Coded, electronic process lock with safety sensor, which is actuated contactless by a coded anchor plate. The safety sensor monitors the position of rotating, laterally movable or
removable protective devices with the coded electronic anchor plate.
2 .6 Series connection
Safety-related aspects
Provided the wiring is correct, the HOLDX RL2 process lock with safety function allows
series connection of up to 30 HOLDX R2 process locks, where each safety level allows PL e/
Category 4 according to EN ISO 13849-1. In the case of series connection, it must be noted
that time delays add up for each sensor. The corresponding technical data can be found in
the table in Section 2.8 – Technical data. OSSD inputs and outputs are used as safety signals.
Note
The evaluation and design of the safety chain must be carried out by the user
in accordance with the relevant standards and regulations and depending on
the required safety level.
If several process locks are involved in the same safety function, the PFH values
of the individual components must be added together.
Wiring examples can be found in Section 10.1 – Electrical connection.
SISTEMA libraries and other wiring examples, e.g. with our passive junction XCONN or
the wireless controller "Safety Simplifier" can be downloaded from our website www.
safety-products.de.
Master/Slave principle
When several HOLDX RL2 process locks are connected in series, one HOLDX master can be
used with up to 29 HOLDX slaves. The series connection can be used in combination with
different RL2 and RS2 designs. The safety-related signals are connected in series via the OSSD
signals. There is a safe shutdown circuit for series connection. An internal CAN interface is
used for non-secure communication between the HOLDX master and the slave participants.
The safety function consists in the safe disconnection of the safety outputs Pin 2 (X1) and
Pin 4 (X1), when the protective device opens and in the safer shutdown mode, when the
safety outputs remain off as long as the safety guard is open. This can be done in conjunction
with an SSP safety evaluation unit or comparable safety controllers.
For versions with integrated EDM+Reset input at the HOLDX-Master (see type codes in Section
2.2) the process lock can also be used without additional safety evaluation units/controllers.
By the serial IN Pin 5 (X1) and Pin 6 (X1) of the process lock, the locking magnet is activated
and the door is locked after closing. The current locking force is evaluated via a magnetic flux
measurement. The locking force has no influence on the safe OSSD outputs.
The diagnosis outputs Serial OUT Pin 7 (X1) and Pin 8 (X1) of the process lock provide
information on door position, magnetic lock and possible faults. Further information on the
diagnosis output can be found in Section 5.4 – Serial outputs.
A permanent latching force is possible due to the optional built-in permanent mag-
net in the anchor plate. A smart latching force can be set via the "HOLDX-Man-
ager" software as well as via the serial inputs Serial IN Pin 5 (X1) and Pin 6 (X1).
The permanent latching force keeps the door closed (50 N) even in a de-energized state.
The smart latching force keeps the door closed even when the electromagnet is switched off
(adjustable 0–50 N). For the setting of the latching force, refer to the operating instructions
of the "HOLDX-Manager" software. The document and the software can be found on the
Internet at www.safety-products.de.
Information
The overall concept of the control system in which the safety component is
integrated, shall be validated in accordance with the relevant standards.
2 .5 Principles of action of the magnetic force monitoring
The locking force F is electronically controlled and measured when the locking force is switched
on. Thus, a dirty process lock or a sub-optimal installation is detected. If the locking force falls
below 400 N, a message is sent via diagnosis outputs Serial OUT Pin 7 (X1) and Pin 8 (X1).
In addition, the status is indicated by the blue LED on the side of the housing. The current
locking force can be controlled at any time via the optional built-in Bluetooth-interface and
the "HOLDX-Manager" software.