CARLO GAVAZZI SMS20 Guide De Démarrage Rapide page 3

Technical data
24 Vdc ±10%, 2 W, Class 2
24 Vac -15/+10% 50-60 Hz, 4.5 VA, Class 2
Power supply
Overvoltage category III
Short circuit protection internal PTC
Rated insulation voltage 4 kV
Input current Typical 5mA
Voltage free contact output, relays with forcibly
Output type
guided contacts
@ 60°C (140°F) operating temperature:
Max current rating -
AC 1: 250V / 6A / 2000 VA - AC 15: 230V / 3A
single output DC 1: 24V / 6A - DC 13: 24V / 2.5A / 0.1 Hz
Pilot duty: B300 / R300
Spacing between modules ≥100mm: 72A² @40°C
(104°F) ambient temperature
Max. total current Σ Ith²
Modules mounted stacked: 26A² @25°C (77°F)
ambient temperature
Please refer to the derating curves in chapter 12**
IP40 on frontal part of the housing, IP20 on the
Protection grade
terminals. The device has to been installed in a
cabinet with protection degree of IP54.
Operating temperature -25 ÷ +60°C (-13 ÷ 140°F), UL: +40°C (104°F)
Storage temperature -30 ÷ +70°C (-22 ÷ 158°F)
Safety parameters
SMS20
SMS31
ISO 13849-1
Cat. 4
Safety Category
ISO 13849-1
PL e
Performance Level
DIN EN 81-20 Certified
DIN EN 81-50 Certified
MTTF [a] 420,8
D
PFH [1/h] 1,85 E-10
D
DCavg 99%
ß 5,00 E-02
ß 2,00 E-02
D
SMSA31 SM2H21 SME41
Cat. 4 Cat. 4 Cat. 4***
PL e PL e PL e***
420,8 422,1 363,4
1,85 E-10 1,35 E-10 1,59 E-10
99% 99% 99%***
5,00 E-02 5,00 E-02 5,00 E-02
2,00 E-02 2,00 E-02 2,00 E-02
LED information
LED Color Status
Power
Green ON
Input 1
Input 1 OFF
Input 2 Input 2 OFF
Input 1 ON
Input 2 OFF
Yellow
Input 1 OFF
Input 2 ON
Input 1 ON
Input 2 ON
Channels
OFF
Green
ON
***The SME41 is an expansion module with no internal diagnostics. To attain Cat 4, PL e
according to EN ISO 13849-1, the SME41 must be used with a Cat 4, PL e master module
and the NC feedback output of SME41 (contacts 51-52) must be connected in series with
the start signal of the master module (as shown in sections 10.2.2 and 10.2.3)**. This
must be done to prevent any start/restart of the system if an internal failure in the SME41
has occurred.
Wiring information
Max. terminal tightening torque: 0.5Nm (for all connections)
To prevent contact welding, a fuse should be connected on the output contacts.
Sufficient fuse protection must be provided on all output contacts with capacitive and inductive
loads. Ensure the wiring and EMC requirements of IEC 60204-1 are met.
It is good practice to separate the power supply of the control unit from that of other electrical
devices (e.g. frequency drives, electric motors, inverters) or other sources of disturbance.
Use conductors with section: 0,2 - 2,5 mm² (24 - 14 AWG)
Meaning
SM is powered
The safety devices connected to the inputs 1 and
2 are not active (e.g. contacts open); the safety
module cannot enable the safety outputs
The safety device connected to the input 1 is
active (e.g. contact closed), while the input 2 is
not active (e.g. contact open); the safety module
cannot enable the safety outputs
The safety device connected to the input 2 is
active (e.g. contact closed), while the input 1 is
not active (e.g. contact open); the safety module
cannot enable the safety outputs
The safety devices connected to the inputs 1 and
2 are active (e.g. contacts closed); the safety
module can enable the safety outputs
The NO safety outputs are open and the NC auxi-
liary output is closed
The NO safety outputs are closed and the NC
auxiliary output is open