Features
For emergency stop, safety gates, magnetic switches, safety limit switches
The SMS20 and SMS31 safety modules are designed in Category 4, Performance Level e in accordance with the Machine Directive EN ISO 13849-1 to monitor and control safely the safety circuits in applications with emergency stops, safety gates, safety magnetic switches, safety limit switches and electromechanical interlocks.
They are also used to control safely the safety circuits of the lift car levelling and the lift pit inspection, in compliance with the Lifts Standards EN81-20 and EN81-50.
Main features：
● Multiple types inputs. The safety modules can monitor the safety state of several types of inputs: E-stop, E-gate, limit switches, non-contact switches
● Machinery Directive compliance. Cat. 4, PL e in accordance with EN ISO 13849-1
● Lift Directive compliance. EN81-20 and EN81-50 standards
● Multiple operating modes. The modules can operate with automatic, manual or monitored manual start/reset
● Safety outputs. Electromechanical forcibly guided safety relays with 3NO+1NC aux outputs (SMS31) or 2NO outputs (SMS20)
● Flexible wiring. The modules are equipped with detachable screw terminals for easy wiring and product maintenance; the terminal blocks are coded so to avoid wiring mistakes
● Diagnostic. LED indications for power supply, state of the safety inputs and state of the safety outputs
● Compact. 1-DIN, W x H x D: 17,5 x 110,8 x 121,1mm
● Approval by TÜV. CE, cULus
Main functions：
● Monitoring of safety circuits in applications with emergency stop buttons, emergency gates with electromechanical or non-contact safety switches, safety accesses with safety magnetic switches and interlocks
● Monitoring of safety circuits with magnetic or electromechanical safety switches in Lifts to control the lift car levelling
● Double or single safety channel operation
● Control of up to 3 NO safety outputs with electromechanical safety relays
● Selectable start/reset operating mode Manual, Automatic or Monitored Manual Start
● Diagnostic of the safety circuit through on-board LED indications for power supply, status of safety channels and status of safety outputs
● 1 NC auxiliary output (SMS31) that can be used for external status indication
The SMS20 and SMS31 safety modules are designed in Category 4, Performance Level e in accordance with the Machine Directive EN ISO 13849-1 to monitor and control safely the safety circuits in applications with emergency stops, safety gates, safety magnetic switches, safety limit switches and electromechanical interlocks.
They are also used to control safely the safety circuits of the lift car levelling and the lift pit inspection, in compliance with the Lifts Standards EN81-20 and EN81-50.
Main features：
● Multiple types inputs. The safety modules can monitor the safety state of several types of inputs: E-stop, E-gate, limit switches, non-contact switches
● Machinery Directive compliance. Cat. 4, PL e in accordance with EN ISO 13849-1
● Lift Directive compliance. EN81-20 and EN81-50 standards
● Multiple operating modes. The modules can operate with automatic, manual or monitored manual start/reset
● Safety outputs. Electromechanical forcibly guided safety relays with 3NO+1NC aux outputs (SMS31) or 2NO outputs (SMS20)
● Flexible wiring. The modules are equipped with detachable screw terminals for easy wiring and product maintenance; the terminal blocks are coded so to avoid wiring mistakes
● Diagnostic. LED indications for power supply, state of the safety inputs and state of the safety outputs
● Compact. 1-DIN, W x H x D: 17,5 x 110,8 x 121,1mm
● Approval by TÜV. CE, cULus
Main functions：
● Monitoring of safety circuits in applications with emergency stop buttons, emergency gates with electromechanical or non-contact safety switches, safety accesses with safety magnetic switches and interlocks
● Monitoring of safety circuits with magnetic or electromechanical safety switches in Lifts to control the lift car levelling
● Double or single safety channel operation
● Control of up to 3 NO safety outputs with electromechanical safety relays
● Selectable start/reset operating mode Manual, Automatic or Monitored Manual Start
● Diagnostic of the safety circuit through on-board LED indications for power supply, status of safety channels and status of safety outputs
● 1 NC auxiliary output (SMS31) that can be used for external status indication
Specification
Power supply
24Vdc ± 10%; 24Vac -15%/+10%, 50÷60 Hz, Class 2
Overvoltage category III
Short circuit protection internal PTC
Rated insulation voltage 4 kV
Inputs
Number of safety channels 2
Safety inputs (contact inputs) S11-S12 and S21-S22
Loop resistance Max. 1 kΩ
Input current Typical 5 mA
Outputs
SMS31
NO safety outputs 3
NC auxiliary output 1
Type Voltage free contact output, relays with forcibly guided contacts
Max current rating - single output
@ 60°C (140°F) operating temperature:
AC 1: 250V / 6A / 2000 VA - AC 15: 230V / 3A
DC 1: 24V / 6A - DC 13: 24V / 2.5A / 0.1 Hz
UL508, pilot duty: B300 / R300
Max quadratic current
Spacing between modules ≥100mm: 72A2 @40°C (104°F) ambient temperature
Modules mounted stacked: 26A2 @25°C (77°F) ambient temperature
Please refer to the derating curves in installation manual
Mechanical life > 107 operations
Electrical life AC1 (360 s/h) ~ 105 operations
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
24Vdc ± 10%; 24Vac -15%/+10%, 50÷60 Hz, Class 2
Overvoltage category III
Short circuit protection internal PTC
Rated insulation voltage 4 kV
Inputs
Number of safety channels 2
Safety inputs (contact inputs) S11-S12 and S21-S22
Loop resistance Max. 1 kΩ
Input current Typical 5 mA
Outputs
SMS31
NO safety outputs 3
NC auxiliary output 1
Type Voltage free contact output, relays with forcibly guided contacts
Max current rating - single output
@ 60°C (140°F) operating temperature:
AC 1: 250V / 6A / 2000 VA - AC 15: 230V / 3A
DC 1: 24V / 6A - DC 13: 24V / 2.5A / 0.1 Hz
UL508, pilot duty: B300 / R300
Max quadratic current
Spacing between modules ≥100mm: 72A2 @40°C (104°F) ambient temperature
Modules mounted stacked: 26A2 @25°C (77°F) ambient temperature
Please refer to the derating curves in installation manual
Mechanical life > 107 operations
Electrical life AC1 (360 s/h) ~ 105 operations
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
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Note : Design and specifications are subject to change without notice.
Note : Please make sure the product and the device which connect with RS-485 are on common ground, avoid damaged product.