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Verfügbare Sprachen
Verfügbare Sprachen
4.10.2 Internal connections of integrated control devices
The switch can be supplied with a cover equipped with between one and three inte-
grated control devices. The below illustrates the standard connections for these de-
vices. Other configurations are available on request.
Internal terminal strip
19 20 21 22 23 24 25 26
integrated control
devices
19
27 28 29 30 31 32 33 34
20
21
22
23
24
25
1
26
27
2
28
29
30
3
31
32
33
34
4.10.3 Switch with integrated field-wireable control devices
NG 2D
1C
••••
NG 2D
1D
••••
A2
1
19
B2
20
2
I4
3
21
O3
O3
4
22
O4
O4
23
5
I3
24
6
IE1
IE1
8
25
IE2
IE2
9
26
A1
27
10
B1
11
28
IS1
IS1
12
29
IS2
IS2
30
13
I5
31
14
OS1
OS1
15
32
OS2
OS2
16
33
34
4.10.4 Switch with integrated control devices and M23 connector, 19-pole
NG 2D
1C-K603
NG 2D
••••
NG 2D
1D-K603
NG 2D
••••
A2
A2
19
1
6
B2
B2
19
17
I4
I4
1
O3
O3
8
O4
O4
9
6
I3
I3
7
15
A1
A1
6
B1
B1
6
IS1
IS1
2
14
IS2
IS2
13
3
I5
I5
11
12
OS1
OS1
4
10
OS2
OS2
5
18
16
19
4.11 RFID sensor intervention points
The RFID sensor on the device recognises the actuator when placed in front of it.
Within this range the signalling output O3 is activated along with the ACT LED to
indicate the "guard closed" condition. In this condition, it is possible to lock the "guard
closed" state by means of the I4 input. After locking, the LOCK LED and the output
O4 are activated. At the same time the RFID sensor extends its distance to prevent
vibrations or impacts from causing involuntary opening of outputs OS1, OS2 and O4
when the guard is locked. If the input I4 (or IE1/IE2) is activated or deactivated, without
the actuator present, the device does not lock or activate any of the outputs OS1,
OS2, O4. To open the guard it is necessary to operate via the input I4; with guard
unlocked, output O4 will be deactivated and the LOCK LED will switch off. At this
point, the RFID sensor will reset its operating distance to the initial values (in mode
1 only, in modes 2 and 3 the operating distance remains unchanged even when the
guard is unlocked), and by opening the guard the output O3 and the ACT LED will be
deactivated.
5 OPERATION
5.1 Access monitoring
These devices alone are not sufficient to protect any operators or maintenance
engineers in the event that they are able to physically enter the danger area with their
whole body, since any unintentional closing of a guard behind them could allow the
machine to be restarted. In case the machine restarting control is entirely entrusted
to these switches, a device must be provided to avoid that risk, such as a lock-out/
tag-out system which stops the machine from being restarted. A specifically designed
lock-out/tag-out device is available as an accessory for the switch, which prevents any
Connection
Contact 1
Device 1
Contact 2
Contact 1
Device 2
Contact 2
Contact 1
Device 3
Contact 2
Supply input +24 Vdc / LED device 1
Supply input +24 Vdc / LED device 2
Supply input +24 Vdc / LED device 3
Supply input 0 V / LED
NG 2D
1E
NG 2D
••••
NG 2D
1F
NG 2D
••••
A2
A2
1
19
1
B2
B2
20
2
2
I4
I4
3
21
3
O3
4
22
4
O4
23
5
5
I3
I3
24
6
6
IE1
8
25
8
IE2
9
26
9
A1
A1
27
10
10
B1
B1
11
28
11
IS1
12
29
12
IS2
30
13
13
I5
I5
31
14
14
OS1
15
32
15
OS2
16
33
16
34
1E-K602
NG 2D
••••
••••
1F-K602
NG 2D
••••
••••
A2
19
1
6
19
1
B2
19
17
19
I4
1
1
O3
8
8
O4
9
6
9
I3
7
15
7
A1
6
6
B1
6
6
IS1
2
2
IS2
3
3
I5
12
12
OS1
4
4
OS2
5
18
5
16
19
unintentional machine start up with the operator still inside. Please contact our sales
offices for more information (see paragraph SUPPORT).
5.2 Definitions
States of the switch:
• OFF: device is off, not powered.
• POWER ON: state immediately following switch on, during which the device carries
out internal tests.
• RUN: state in which the device is working in normal operation.
• ERROR: error state in which the safety outputs are disabled. Indicates presence of a
failure, either internal or external to the device, such as for example:
- a short circuit between the safety outputs (OS1, OS2),
- a short circuit between a safety output and the ground,
- a short circuit between a safety output and the supply voltage,
- an excessive misalignment between the switch and the locked actuator,
- an exceedance of the maximum retention force with failure of the device in locked
condition,
- an exceedance of the maximum or minimum admissible ambient temperature,
- an internal failure.
• The safety functions are defined as follows.
Mode 1:
- OS1 and OS2 must be disabled when the actuator is detected as released.
- OS1 and OS2 must be disabled when the actuator is no longer detected.
- OS1 and OS2 must be deactivated if IS1 or IS2 is not active.
Mode 2:
- OS1 and OS2 must be disabled when the actuator is no longer detected.
1G
••••
- OS1 and OS2 must be deactivated if IS1 or IS2 is not active.
1H
••••
Mode 3:
19
- OS1 must be disabled when the actuator is detected as released.
20
- OS2 must be disabled when the actuator is no longer detected.
21
- OS1 must be deactivated when IS1 is not enabled.
22
23
- OS2 must be deactivated when IS2 is not enabled.
24
With any operation mode the device must keep the guard closed and locked when
25
the solenoid is enabled (working principle E for versions NG 2D1E••••, NG 2D7E••••)
26
27
or disabled (working principle D for versions NG 2D1D••••, NG 2D5D••••, NG
28
2D6D••••, NG 2D7D••••) and a force less than the declared value F
29
• The EDM External Device Monitoring function (where present) is a function which
30
31
allows the device to monitor the state of external contactors. Activation and deac-
32
tivation of external contactors must follow the NG switch safety outputs within a
33
maximum delay.
34
5.3 Description of operation
Note: the following functional descriptions refer to a device with safety outputs enabled
1G-K601
with guard closed and locked (mode 1).
1H-K601
A device with safety outputs enabled by closing the guard (mode 2) dif-
fers from the above operating mode for the fact that the safety outputs OS1
6
and OS2 are enabled without the f4 function verifying the guard locking.
17
Mode 3 differs, in that OS1 is enabled when the guard is closed and locked, and OS2
with guard closed.
Following correct installation in accordance with these instructions, the safety device
can be powered. The diagram below represents the 5 logic functions which interact
inside the safety device.
18
f2
19
EDM
f5
I5
f4
IN
f1
IS1
IS2
f0
PWR
In the EDM versions the f5 function verifies the coherence of the EDM signal during
state changes and when the safety outputs are off.
When these three conditions are given, the f3 function of the device enables the safety
outputs OS1 and OS2.
The device inputs IS1 and IS2 are normally activated simultaneously and so are
monitored both for state and coherence. In the event of deactivation of just one of
the two inputs, the device deactivates the safety outputs and signals a non-coherent
condition of the inputs via the IN LED flashing green/orange. In order to reactivate
the safety outputs, both inputs have to be deactivated and subsequently reactivated.
In the RUN state, function f0 carries out internal test cycles in order to identify any
failures. Detection of any internal error switches the device to the "ERROR" state
(PWR LED continuously red) which deactivates immediately the safety outputs.
The "ERROR" state can be reached also where short-circuits between the safety
outputs (OS1, OS2), or a short circuit of an output towards ground or towards the
supply voltage, are identified. In this case also, the F3 function deactivates the safety
outputs and the error state is indicated by the OUT LED flashing red.
The O3 signalling output activates during the "RUN" state, at the actuator insertion
into the device, independently of the state of the IS1 and IS2 inputs. The state of this
output is displayed via the ACT LED.
The O4 signalling output activates during the "RUN" state, when the actuator has
been introduced and locked into the device, independently of the state of the IS1 and
IS2 inputs. The state of this output is displayed via the LOCK LED.
The actuator lock or release command is transmitted to the device through the I4
input.
9/30
In the initial "POWER ON" state, the safety device
f0 function carries out an internal self diagnosis.
When this terminates successfully, the device
switches to the "RUN" state. If the test is not
CODE
passed because of an internal failure, the device
ACT
enters the "ERROR" state.
O3
In EDM versions, on power-up, the EDM signal is
LOCK
checked and must be active within 500 ms from
O4
device start. If the EDM signal is not present, after
the delay time the F5 function sets the device to
OUT
the FAULT state.
f3
The "RUN" state is the normal operation state: the
OS1
f1 function evaluates the state of inputs IS1, IS2;
OS2
at the same time the f2 function checks the pres-
A1
A2
ence of the actuator and the f4 function verifies
that the actuator has been locked.
Zh is applied.
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