22
Rev. 1 | 01/2020 | MS Safety Module | © 2020 |
Comepi srl
EN
7.5.1
E-stop, safety limit switch and
safety interlocks (double channel mode)
A
A cross circuit between the two channels will be recognized
B
In case of a fault the safety outputs will switch OFF
7.5 Application
Not only must the output be safe, but also the complete wiring and surroundings. In order to reach cat. 4 of functional
safety, two outputs must be wired as a pair, so that a defect of one output cannot cause a total loss of safety, as the other
one of the pair is still able to switch off the dangerous parts of the plant (or machine). So wiring similar to the following
has to be done:
7.4.1 Outputs function
A
The NO safety outputs switch on (contacts close) and the NC
auxiliary output opens, when the safety input are active and
the start/reset is pressed.
B
In case of intervention of the safety inputs, the NO safety
outputs are switched off and the NC auxiliary output is closed.
C
If the power supply fails, the NO safety outputs are switched
off and NC auxiliary output is closed.
D
The NC auxiliary output is not a safety output
7.4 Function description
A1
A2
X1
X2
X3
S11
S12
S21
S22
13
14
23
24
33
34
41
42
M1
3~
M
K1
K2
K3
L
N
E-STOP
Pwr 24V (+/~)
Pwr 24V (-/~)
Manual start
A1
A2
X1
X2
X3
S11
S12
S21
S22
13
14
23
24
33
34
41
42
M1
3~
M
K1
K2
K3
L
N
E-STOP
Pwr 24V (+/~)
Pwr 24V (-/~)
Manual start
Information:
You must comply with the safety-related parameteres in order to ensure the required safety level for your
plant/machine. All the units which use a safety function must be considered when calculating the overall
safety level.
7.3.8 Environmental
Protection grade
IP40 on frontal part of the housing, IP20 on the terminals. The device
has to be installed in a cabinet with protection degree of IP54.
Pollution degree
2
Operating Temperature
-25 ÷ +60°C (-13 ÷ 140°F), UL: +40°C (104°F);
(tested @ temp 65°C (149 °F) as per lift norm)
Storage Temperature
-30 ÷ +70°C (-22 ÷ 158°F)
Ambient humidity range
R.H. ≤95% non condensing
