Technical Data
3
Technical Data
Parameter
EXTER K20m
Front panel, W x H x D
155 x 155 x 6 mm
Mounting depth
46.4 mm
Front panel seal
IP 66
Rear panel seal
IP 20
Keyboard material
Membrane switch keyboard with metal domes. Overlay
fi
lm of Autotex F207* with print on reverse side. 1 million
operations.
Reverse side
material
Powder-coated aluminum
Weight
0.55 kg
Serial port
RS422/RS485
25-pin D-sub contact, chassis-mounted female with
standard locking screws 4-40 UNC
Serial port RS232C
9-pin D-sub contact, male with standard locking screws 4-40
UNC
Flash memory for
application
512 kB
Real time clock
±20 PPM + error because of ambient temperature. Total
maximum error: 1 minute/month at 25 °C.
Temperature coef
fi
cient: -0.034±0.006 ppm/°C
2
Real time
clock battery
(rechargeable)
MS614S (UL and cUL: SII Micro Parts Ltd)
Power consumption
at rated voltage
Normal: 0.1 A
Maximum: 0.3 A
Display
FSTN-LCD, 240 x 64 pixels, monochrome transmissive
negative.
LED backlight lifetime at the ambient temperature of
+25 °C: >47,000 h.
Active area of
display, W x H
90.2 x 24.0 mm
Fuse
Internal DC fuse, 1.0 AT, 5 x 20 mm
Power supply
+24 V DC (20 - 30 V DC). Power supply connector.
CE: The power supply must conform with the requirements
according to IEC 60950 and IEC 61558-2-4.
UL and cUL: The power supply must conform with the
requirements for class II power supplies.
Ambient
temperature
Vertical installation: 0 ° to +50 °C
Horizontal installation: 0 ° to +40 °C
Storage temperature
-20 ° to +70 °C
Relative humidity
5 - 85 % non-condensed
Approvals and
certi
fi
cations
Information is available on the web site
* See section
for more information.
Beijer Electronics, MAEN852B
11
