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Part no.: 547951 – MSI-SR4B-02 – Safety relay
Technical data
Basic data
Series MSI-SR4B
Functions
Functions Automatic start/restart
Restart Automatic
Characteristic parameters
SIL 3, IEC 61508
SILCL 3, IEC/EN 62061
Performance Level (PL) e, EN ISO 13849-1
MTTF
d
PFH
D
PFH
D
PFHD, nop = 4800 0.0000000014 per hour
PFHD, nop = 28800 0.0000000045 per hour
PFHD, nop = 86400 0.000000015 per hour
Mission time T
Category 4, EN ISO 13849
STOP category 0, IEC/EN 60204-1
B10dat DC13 (inductive load) 1,000,000 number of cycles
B10dat AC15 (inductive load) 1,400,000 number of cycles
M
Cross circuit monitoring
Start/restart interlock (RES), selectable
Contactor monitoring (EDM)
Manual
73 years, EN ISO 13849-1
0.000000021 per hour
2,1E-08 per hour
20 years, EN ISO 13849-1
Electrical data
Protective circuit Fuse on switching output, upstream
Continuous current per current path, max. 3 A
Input current, max. 100 mA
External safeguarding for supply circuit 200 mA delay-action
Permissible input line resistance, max. 30 Ω
Performance data
Supply voltage 24 V, AC/DC, -20 ... 20 %
Current consumption, max. Without external load
Power consumption, max. 3 W
Outputs
Number of safety-related switching outputs (OSSDs) 3 Piece(s)
Safety-related switching outputs
Type Safety-related switching output OSSD
Voltage type AC/DC
Safety-related switching output 1
Switching element Relay, NO
Safety-related switching output 2
Switching element Relay, NO
Safety-related switching output 3
Switching element Relay, NO
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Part no.: 547951 – MSI-SR4B-02 – Safety relay
Timing
Response time 10 ms
Pickup delay, automatic start 300 ms
Pickup delay, manual start 30 ms
Regression delay 10 ms
Test pulse acceptance, max. 1 ms
Time window for signal sequence monitoring 20 ms
Connection
Number of connections 1 Piece(s)
Connection 1
Type of connection Terminal
Function Connection to device
Type of terminal Spring-cage terminal
No. of pins 16 -pin
Cable properties
Connection cross sections 0.2 to 1.5 mm²
Mechanical data
Dimension (W x H x L) 22.5 mm x 111 mm x 114.1 mm
Housing material Plastic, PA 66
Electrical contact material Silver alloy
Net weight 170 g
Housing color Gray
Type of fastening Snap-on mounting
Mechanical life time 10,000,000 switching cycles
Operation and display
Type of display LED
Number of LEDs 4 Piece(s)
Environmental data
Ambient temperature, operation 0 ... 55 °C
Ambient temperature, storage -25 ... 70 °C
Certifications
Degree of protection IP 40 (housing)
Protection class II
Certifications c TÜV NRTL US
IP 20 (terminals)
TÜV Süd
c UL US
Classification
eCl@ss 8.0 27371819
eCl@ss 9.0 27371819
ETIM 5.0 EC001449
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Part no.: 547951 – MSI-SR4B-02 – Safety relay
Electrical connection
Connection 1
Type of connection Terminal
Function Connection to device
Type of terminal Spring-cage terminal
No. of pins 16 -pin
Terminal Assignment
13 Relay contact 1 IN
23 Relay contact 2 IN
33 Relay contact 3 IN
41 Signal contact IN
A1 +24V
S35 Restart input
S33 Sensor supply, contacts 24V OUT
S22 Sensor input
S12 Sensor input
A2 0 V
S34 Restart automatic output
S31 Sensor input
14 Relay contact 1 OUT
24 Relay contact 2 OUT
34 Relay contact 3 OUT
42 Signal contact IN
Operation and display
LEDs
LED Display Meaning
1 Green, continuous light Supply voltage on
2 Green, continuous light Relay K1 picked up
3 Green, continuous light Relay K2 picked up
4 Yellow, continuous light Restart interlock locked
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