SM
Safety Modules
Devices
SMS20
SMS31
SMSA31
SM2H21
SME41
NO safety outputs
2
3
3
2
4
Aux NC output
-
1
1
1
1
Safety input channels*
2 NO
2 NO
1NO + 1NC
2NO
2 NO or
2 OSSD
Function
E-stop, E-gate, magnetic switch,
limit switch, lift levelling
E-gate, magnetic
switch in
antivalent
Two-hand
control
Relay expansion
unit
Operating modes
Manual start
X3
X2
X1
Start
Automatic
start
X3
X1
X2
Monitored
manual start
X3
X1
X2
Start
Compatibility and conformity
Approvals
EC type examined
by
TÜV
Terminal markings
X1-X2
manual start / automatic start
•
•
•
X1-X3
monitored manual start
•
•
•
S11-S12
input channel 1
•
•
•
•
•
S21-S22
input channel 2
•
•
•
•
•
Y1-Y2
NC feedback 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
•
•
•
43-44
NO safety output
•
31-32
NC auxiliary output
•
34
PNP auxiliary output
•
41-42
NC auxiliary output
•
•
51-52
NC auxiliary output
•
*Safety input channels: the normal/default status of the contacts connected to the input channels is defined for the inactive state. In this
state, the module does not activate the safety outputs. The safety outputs will be activated when the contacts at the input change state.
**For complete installation instructions,
please refer to the installation manual
http://gavazziautomation.com/images/
PIM/MANUALS/ENG/SM_IM.pdf
Installation manual