Siemens LOGO! DM8 24 6AG1 055-1HB00-7BA2

12 V DC
24 V DC	Yes
permissible range, lower limit (DC)	20.4V
permissible range, upper limit (DC)	28.8V

Altitude during operation relating to sea level
Ambient air temperature-barometric pressure-altitude	Tmin ... Tmax at 1 140 hPa ... 795 hPa (-1 000 m ... +2 000 m) // Tmin ... (Tmax - 10 K) at 795 hPa ... 658 hPa (+2 000 m ... +3 500 m) // Tmin ... (Tmax -20 K) at 658 hPa ... 540 hPa (+3 500 m ... +5 000 m)

Altitude during operation relating to sea level
Installation altitude above sea level, max	5000m

Ambient temperature during operation
max	70C; = Tmax; Tmax > +55 C max. load 3 A per relay or max. total current 10 A
min	-40C; = Tmin; Startup @ -25 C

Ambient temperature during operation
At cold restart, min	-25C; incl. condensation / frost permitted (no commissioning under condensation conditions)

Ambient temperature during storage/transportation
max	70C
min	-40C

Conformal coating
Qualification and Performance of Electrical Insulating Compound	Yes; Conformal coating, Class A

Conformal coating
Coatings for printed circuit board assemblies acc. to EN 61086	Yes; Class 2 for high reliability
Military testing according to MIL-I-46058C, Amendment 7	Yes; Discoloration of coating possible during service life
Protection against fouling acc. to EN 60664-3	Yes; Type 1 protection

Coolants and lubricants
Resistant to commercially available coolants and lubricants	Yes; Incl. diesel and oil droplets in the air

Degree and class of protection
IP degree of protection	IP20

Digital inputs
Number of digital inputs	4

Digital outputs
Number of digital outputs	4; Relays

Digital outputs
Short-circuit protection	No

Dimensions
Depth	58mm
Height	90mm
Width	35.5mm

Emission of radio interference acc. to EN 55 011
Limit class B, for use in residential areas	Yes

for standard inputs
at "0" to "1", max	1.5ms
at "1" to "0", max	15ms

Input current
for signal "0", max. (permissible quiescent current)	1.1mA
for signal "1", typ	5.5mA

Input voltage
for signal "0"	< 5 V AC/DC
for signal "1"	> 12 V AC/DC
Type of input voltage	AC/DC

Installation type/mounting
Mounting	on 35 mm DIN rail, 2 spacing units wide

Output current
for signal "1" rated value	5A

Parallel switching of two outputs
for uprating	No

Relative humidity
With condensation, tested in accordance with IEC 60068-2-38, max	100%; RH incl. condensation / frost (no commissioning in bedewed state), horizontal installation

Remark
Note regarding classification of environmental conditions acc. t	* The supplied plug covers must remain in place over the unused interfaces during operation!

Switching frequency
with inductive load, max	0.5Hz
with resistive load, max	2Hz

Usage in industrial process technology
Against chemically active substances acc. to EN 60654-4	Yes; Class 3 (excluding trichlorethylene)
Environmental conditions for process, measuring and control syst	Yes; Level GX group A/B (excluding trichlorethylene; harmful gas concentrations up to the limits of EN 60721-3-3 class 3C4 permissible); level LC3 (salt spray) and level LB3 (oil)

Use in stationary industrial systems
to biologically active substances according to EN 60721-3-3	Yes; Class 3B2 mold, fungus and dry rot spores (with the exception of fauna); Class 3B3 on request
to chemically active substances according to EN 60721-3-3	Yes; Class 3C4 (RH < 75 %) incl. salt spray acc. to EN 60068-2-52 (severity degree 3); *
to mechanically active substances according to EN 60721-3-3	Yes; Class 3S4 incl. sand, dust, *

Use on ships/at sea
to biologically active substances according to EN 60721-3-6	Yes; Class 6B2 mold and fungal spores (excluding fauna); Class 6B3 on request
to chemically active substances according to EN 60721-3-6	Yes; Class 6C3 (RH < 75 %) incl. salt spray acc. to EN 60068-2-52 (severity degree 3); *
to mechanically active substances according to EN 60721-3-6	Yes; Class 6S3 incl. sand, dust; *

with resistive load, max
Thermal continuous current, max