5
Proper Use
The devices are safety switching devices. They must only be used as components of safety equipment on machines intended to protect persons, material and
plant.
Notes
•
The Performance Level (PL) and safety category in accordance with EN ISO 13849-1 depends on the external wiring, the application case, the
choice of control station and how this is physically arranged on the machine.
•
The user must carry out a risk assessment in accordance with ISO 14121-1.
•
The entire system/machine must undergo validation in accordance with the applicable standards on the basis of this.
•
In order for the specified Performance Level (PL) to be achieved, an average annual number of switching cycles must not be exceeded (see EN
ISO 13849-1, C.2.4 and Tab. K.1), taking into account the prevailing device load (see EN ISO 13849-1, Tab. C.1) and the application case. Assum-
ing that the
B
10d
value for the maximum load is 400,000, this results in a maximum cycle number of 400,000 / 0.1 x 30 = 133,333 switching cy-
cles/year.
•
The safety-related parameters are only valid when the relays are switched at least once per year.
•
Operating the device not within the specifications may lead to malfunctions or the destruction of the device.
•
The supply input A1 also serves as a control input. This may lead to short disruptions or a lowering below the operating voltage in order to
switch to the release path.
•
The indicated times must be observed when the device is operated, otherwise the device could lock. Locking can be cancelled by opening the
safety inputs properly.
•
SNE expansion devices or external contactors with positively driven contacts can be used to duplicate the enabling current paths.
•
The device and the contacts must be protected at max. 6 A utilization category gG.
•
The devices are equipped with overload protection (for short-circuit). After the malfunction has been dealt with, the device is operational again
in approx. 3 s.
•
Control output S11 is exclusively for connecting control devices as defined in the operating instructions and not for connecting external con-
sumers such as lamps, relays or contactors.
•
The safety functions are not evaluated by UL. The approval is accomplished according to UL 508, general use applications.
Function diagram SNO 4063K /KM manual start with starting lockout (installation 1, 2, 3, 5 and 6)
A1
S12
S31/S22
S34
K1, K2
13/14, 23/24, 33/34
t
M
t
A1
t
R1
t
M
t
A1
t
R2
t
W
Function diagram SNO 4063KM automatic start without starting lockout (installation 4)
A1
S12
S31/S22
S35
Lock (internal)
K1. K2
13/14, 23/24, 33/34
t
SP
t
A2
<t
TP
t
ASP
t
SP
t
A2
t
R2
t
W
t
R1
t
SP
= lock time, t
A1
= operate time 1, t
A2
= operate time 2, t
TP
= test pulse time, t
ASP
= operate time for lock,
t
M
= on time, t
R1
= release time 1, t
R2
= release time 2, t
W
= recovery time
