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7 Technical data
48
EMS2… Electronic motor starter
10/19 MN034003EN
www.eaton.com
Motor protection tripping characteristics
(IEC 60947-4-2)
Class 10
Class 10A
Heat dissipation min / max
0.88 W / 4.1 W
0.88 W / 7 W
Cooling-off time with auto reset after triggering
20 min
20 min
Protection against overvoltage
Yes
Yes
Allocated protective element on the network side
section 4.1, “Short-circuit protection”,
section 4.1, “Short-circuit protection”,
Use in UL environment
section 4.1.2, “Use in UL environment”,
section 4.1.2, “Use in UL environment”,
Insulation properties
Rated insulation voltage
500 V
500 V
Rated impulse voltage / insulation
6 kV
4 kV
Insulation properties between the actuating
voltage, control supply voltage and auxiliary circuit
to the main circuit
Operational voltage < 300 V AC
(e. g. 230 / 400V AC, 277 / 480 V AC):
Safe isolation according to IEC/EN 60947-1 and
EN 50178 checks for devices with safety
Operational voltage 300 V AC - 500 V AC:
Basic isolation according to IEC/EN 60947-1
Safe isolation according to EN 50178
Operational voltage < 300 V AC
(e. g. 230 / 400V AC, 277 / 480 V AC):
Safe isolation according to IEC/EN 60947-1 and
EN 50178 checks for devices with safety
Operational voltage 300 V AC - 500 V AC:
Basic isolation according to IEC/EN 60947-1
Safe isolation according to EN 50178
Insulation properties between actuating voltage
and control supply voltage to auxiliary circuits
Safe isolation according to IEC/EN 60947-1 and
EN 50178
Safe isolation according to IEC/EN 60947-1 and
EN 50178
Degree of pollution
2
2
Additional information for devices with safety function, i.e. EMS2-D(R)OS(F)-…-24VDC
System conditions
Database for failure rates
SN 29500
–
System type (made up of subsystems)
Type B
–
Applied standard
IEC 61508
–
Beta factor
2 %
–
Safe switch off
HFT (hardware fault tolerance)
1
Ambient temperature
40 °C - 60 °C
–
MTTF (Mean Time to Failure)
64 years at 40 °C ambient temperature
–
MTTF
D
(Mean Time to Failure Dangerous)
175 years at 40 °C ambient temperature
–
Shutdown time
200 ms
–
λ
sd
– failure rate of detectable safe failures
(sd = safe, detectable)
0 FIT
–
λ
su
– failure rate of undetectable safe failures
(su = safe, undetectable)
1134 FIT at 40°C ambient temperature
–
λ
dd
– failure rate of detectable dangerous failures
(dd = dangerous, detectable)
647 FIT at 40 °C ambient temperature
–
λ
du
– failure rate of undetectable dangerous
failures (du = dangerous, undetectable)
4.2 FIT at 40 °C ambient temperature
–
SFF (Safe Failure Fraction)
99.8 % at 40 °C ambient temperature
–
DC (Diagnostic Coverage)
99.4 % at 40 °C ambient temperature
–
Size/feature
EMS2-…-24VDC
EMS2-…-230VAC