Safety Technique
SAFEMASTER
Emergency Stop Module With Time Delay
LG 5928
Function Diagram
Block Diagram
A1(+) A2(-)
S11(+)S13 S22 S32 S12 S33 S34
overvoltage and
overvoltage
short circuit protection
logic
K1
24V
Netz
M9972_a
S21(-)
All technical data in this list relate to the state at the moment of edition. We reserve the right for
technical improvements and changes at any time.
13 23
timer
release delay
K1
K2
K1t
K2t
K2
K1
K2
K1t
K2t
14 24
Your advantage
• Compact, flexible and safe
• Short response time
• Ideal for designs according to the new safety standards
Features
• According to
- Performance Level (PL) e and category 4 to EN ISO 13849-1
- SIL Claimed Level (SIL CL) 3 to IEC/EN 62061
- Safety Integrity Level (SIL) 3 to IEC/EN 61508 and IEC/EN 61511
• Output: 2 NO instantaneous contacts and 1 release delay contact
• 1- or 2-channel connection
• Line fault detection at the ON pushbuttons at connection on
terminals S33-S34
• Manual restart with button on S33-S34 or automatic restart with
bridge between S13-S34
• With or without cross fault monitoring in the E-stop loop
• Indication for released time circuit
• LED indication for supply, channel 1/2 and release delayed contacts
• Wire connection: also 2 x 1.5 mm
DIN 46 228-1/-2/-3/-4 or 2 x 2.5 mm
• As option with pluggable terminal blocks for easy exchange of devices
- with screw terminals
- or with cage clamp terminals
• Width 22.5 mm
Approvals and Markings
*
see variants
)
Application
Protection of people and machines
• Emergency stop circuits on machines, Stop category 1 can be realised
• Monitoring of safety gates
Indicators
upper LED:
37
lower LEDs:
Circuit Diagram
K1t
A1
37
13
+
S33
S34
S13
A1(+)
S11
K2t
K1
S12
K1t
S13
S22
S32
S33
K2
S34
38
K2t
A2(-)
S21
S11
S12
S21
A2
38
14
LG 5928.41
15
stranded ferruled (isolated),
2
stranded ferruled DIN 46 228-1/-2/-3
2
*
A025518
Canada / USA
on when supply connected
on, when relay K1 and K2
resp. K1
and K2
energized
t
t
23
S32
13 23
37
14 24
38
S22
M9840_b
24
LG 5928 / 06.06.16 en / 704