26
Rev. 1 | 01/2020 | MS Safety Module | © 2020 |
Comepi srl
EN
8.2 Operating modes
8.2.1 Manual start
X3
X2
X1
Start
A
The start button is connected between X1 and X2.
The safety inputs S12 and S22 are operated:
• contact open between S11 and S12
• contact closed between S21 and S22
The start button is pressed and the safety outputs switch
ON, while the auxiliary output opens
B
The change of state of at least one safety input forces
immediately the safety outputs to the open state
C
A new operating cycle is possible only after releasing both
input contacts and then operating them again
The MS1B31-024 module monitors both mechanical and safety magnetic sensors in antivalent function, so with 1NC + 1 NO
contacts.
8. MS1B31-024
X1-X2: manual start / automatic start
X1-X3: monitored manual start
S11-S12: channel 1 NC input
S21-S22: channel 2 NO input
A1: power supply 24 Vdc (+)/Vac (~)
A2: power supply 24 Vdc (-)/Vac (~)
13-14: NO safety output
23-24: NO safety output
33-34: NO safety output
41-42: NC auxiliary output
8.1 Terminal layout
Reset / Start
Input ch 1
Input ch 2
Safety output
Auxiliary output
Ts
∞
Ta
<160ms
Tr
<20ms
Ts Ta
Tr
Ts
Ta
Tr
s
dn
a
H
2
el
ud
o
m
yt
ef
as
el
u
d
o
M
yt
ef
a
S
Power
Input 1
Input 2
Channels
X3
A2
A1
X2
S22
S12
X1
S21
S11
13
23
14
24
41
42
33 34
MS1B31-024
